Add imgui

imgui-submodule/imgui/examples/.gitignore

@@ -0,0 +1,46 @@
+build/*
+*/Debug/*
+*/Release/*
+*/x64/*
+*.o
+*.obj
+*.exe
+
+## Visual Studio cruft
+.vs/*
+*/ipch/*
+*.opensdf
+*.log
+*.pdb
+*.ilk
+*.user
+*.sdf
+*.suo
+*.VC.db
+*.VC.VC.opendb
+
+## Xcode cruft
+.DS_Store
+project.xcworkspace
+xcuserdata
+
+## Emscripten output
+*.o.tmp
+*.out.js
+*.out.wasm
+example_emscripten/example_emscripten.*
+
+## Unix executables
+example_glfw_opengl2/example_glfw_opengl2
+example_glfw_opengl3/example_glfw_opengl3
+example_glut_opengl2/example_glut_opengl2
+example_null/example_null
+example_sdl_opengl2/example_sdl_opengl2
+example_sdl_opengl3/example_sdl_opengl3
+
+## Dear ImGui Ini files
+imgui.ini
+
+## JetBrains IDEs
+.idea
+cmake-build-*

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+# if defined(__VER__) && defined(__ICCARM__)
+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 1000000)
+#  define COMPILER_VERSION_MINOR DEC(((__VER__) / 1000) % 1000)
+#  define COMPILER_VERSION_PATCH DEC((__VER__) % 1000)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# elif defined(__VER__) && (defined(__ICCAVR__) || defined(__ICCRX__) || defined(__ICCRH850__) || defined(__ICCRL78__) || defined(__ICC430__) || defined(__ICCRISCV__) || defined(__ICCV850__) || defined(__ICC8051__))
+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 100)
+#  define COMPILER_VERSION_MINOR DEC((__VER__) - (((__VER__) / 100)*100))
+#  define COMPILER_VERSION_PATCH DEC(__SUBVERSION__)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# endif
+
+#elif defined(__SDCC_VERSION_MAJOR) || defined(SDCC)
+# define COMPILER_ID "SDCC"
+# if defined(__SDCC_VERSION_MAJOR)
+#  define COMPILER_VERSION_MAJOR DEC(__SDCC_VERSION_MAJOR)
+#  define COMPILER_VERSION_MINOR DEC(__SDCC_VERSION_MINOR)
+#  define COMPILER_VERSION_PATCH DEC(__SDCC_VERSION_PATCH)
+# else
+  /* SDCC = VRP */
+#  define COMPILER_VERSION_MAJOR DEC(SDCC/100)
+#  define COMPILER_VERSION_MINOR DEC(SDCC/10 % 10)
+#  define COMPILER_VERSION_PATCH DEC(SDCC    % 10)
+# endif
+
+
+/* These compilers are either not known or too old to define an
+  identification macro.  Try to identify the platform and guess that
+  it is the native compiler.  */
+#elif defined(__hpux) || defined(__hpua)
+# define COMPILER_ID "HP"
+
+#else /* unknown compiler */
+# define COMPILER_ID ""
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
+#ifdef SIMULATE_ID
+char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
+#endif
+
+#ifdef __QNXNTO__
+char const* qnxnto = "INFO" ":" "qnxnto[]";
+#endif
+
+#if defined(__CRAYXE) || defined(__CRAYXC)
+char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
+#endif
+
+#define STRINGIFY_HELPER(X) #X
+#define STRINGIFY(X) STRINGIFY_HELPER(X)
+
+/* Identify known platforms by name.  */
+#if defined(__linux) || defined(__linux__) || defined(linux)
+# define PLATFORM_ID "Linux"
+
+#elif defined(__CYGWIN__)
+# define PLATFORM_ID "Cygwin"
+
+#elif defined(__MINGW32__)
+# define PLATFORM_ID "MinGW"
+
+#elif defined(__APPLE__)
+# define PLATFORM_ID "Darwin"
+
+#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+# define PLATFORM_ID "Windows"
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD)
+# define PLATFORM_ID "FreeBSD"
+
+#elif defined(__NetBSD__) || defined(__NetBSD)
+# define PLATFORM_ID "NetBSD"
+
+#elif defined(__OpenBSD__) || defined(__OPENBSD)
+# define PLATFORM_ID "OpenBSD"
+
+#elif defined(__sun) || defined(sun)
+# define PLATFORM_ID "SunOS"
+
+#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
+# define PLATFORM_ID "AIX"
+
+#elif defined(__hpux) || defined(__hpux__)
+# define PLATFORM_ID "HP-UX"
+
+#elif defined(__HAIKU__)
+# define PLATFORM_ID "Haiku"
+
+#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
+# define PLATFORM_ID "BeOS"
+
+#elif defined(__QNX__) || defined(__QNXNTO__)
+# define PLATFORM_ID "QNX"
+
+#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
+# define PLATFORM_ID "Tru64"
+
+#elif defined(__riscos) || defined(__riscos__)
+# define PLATFORM_ID "RISCos"
+
+#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
+# define PLATFORM_ID "SINIX"
+
+#elif defined(__UNIX_SV__)
+# define PLATFORM_ID "UNIX_SV"
+
+#elif defined(__bsdos__)
+# define PLATFORM_ID "BSDOS"
+
+#elif defined(_MPRAS) || defined(MPRAS)
+# define PLATFORM_ID "MP-RAS"
+
+#elif defined(__osf) || defined(__osf__)
+# define PLATFORM_ID "OSF1"
+
+#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
+# define PLATFORM_ID "SCO_SV"
+
+#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
+# define PLATFORM_ID "ULTRIX"
+
+#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
+# define PLATFORM_ID "Xenix"
+
+#elif defined(__WATCOMC__)
+# if defined(__LINUX__)
+#  define PLATFORM_ID "Linux"
+
+# elif defined(__DOS__)
+#  define PLATFORM_ID "DOS"
+
+# elif defined(__OS2__)
+#  define PLATFORM_ID "OS2"
+
+# elif defined(__WINDOWS__)
+#  define PLATFORM_ID "Windows3x"
+
+# else /* unknown platform */
+#  define PLATFORM_ID
+# endif
+
+#elif defined(__INTEGRITY)
+# if defined(INT_178B)
+#  define PLATFORM_ID "Integrity178"
+
+# else /* regular Integrity */
+#  define PLATFORM_ID "Integrity"
+# endif
+
+#else /* unknown platform */
+# define PLATFORM_ID
+
+#endif
+
+/* For windows compilers MSVC and Intel we can determine
+   the architecture of the compiler being used.  This is because
+   the compilers do not have flags that can change the architecture,
+   but rather depend on which compiler is being used
+*/
+#if defined(_WIN32) && defined(_MSC_VER)
+# if defined(_M_IA64)
+#  define ARCHITECTURE_ID "IA64"
+
+# elif defined(_M_X64) || defined(_M_AMD64)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# elif defined(_M_ARM64)
+#  define ARCHITECTURE_ID "ARM64"
+
+# elif defined(_M_ARM)
+#  if _M_ARM == 4
+#   define ARCHITECTURE_ID "ARMV4I"
+#  elif _M_ARM == 5
+#   define ARCHITECTURE_ID "ARMV5I"
+#  else
+#   define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM)
+#  endif
+
+# elif defined(_M_MIPS)
+#  define ARCHITECTURE_ID "MIPS"
+
+# elif defined(_M_SH)
+#  define ARCHITECTURE_ID "SHx"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__WATCOMC__)
+# if defined(_M_I86)
+#  define ARCHITECTURE_ID "I86"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
+# if defined(__ICCARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__ICCRX__)
+#  define ARCHITECTURE_ID "RX"
+
+# elif defined(__ICCRH850__)
+#  define ARCHITECTURE_ID "RH850"
+
+# elif defined(__ICCRL78__)
+#  define ARCHITECTURE_ID "RL78"
+
+# elif defined(__ICCRISCV__)
+#  define ARCHITECTURE_ID "RISCV"
+
+# elif defined(__ICCAVR__)
+#  define ARCHITECTURE_ID "AVR"
+
+# elif defined(__ICC430__)
+#  define ARCHITECTURE_ID "MSP430"
+
+# elif defined(__ICCV850__)
+#  define ARCHITECTURE_ID "V850"
+
+# elif defined(__ICC8051__)
+#  define ARCHITECTURE_ID "8051"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__ghs__)
+# if defined(__PPC64__)
+#  define ARCHITECTURE_ID "PPC64"
+
+# elif defined(__ppc__)
+#  define ARCHITECTURE_ID "PPC"
+
+# elif defined(__ARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__x86_64__)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(__i386__)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+#else
+#  define ARCHITECTURE_ID
+#endif
+
+/* Convert integer to decimal digit literals.  */
+#define DEC(n)                   \
+  ('0' + (((n) / 10000000)%10)), \
+  ('0' + (((n) / 1000000)%10)),  \
+  ('0' + (((n) / 100000)%10)),   \
+  ('0' + (((n) / 10000)%10)),    \
+  ('0' + (((n) / 1000)%10)),     \
+  ('0' + (((n) / 100)%10)),      \
+  ('0' + (((n) / 10)%10)),       \
+  ('0' +  ((n) % 10))
+
+/* Convert integer to hex digit literals.  */
+#define HEX(n)             \
+  ('0' + ((n)>>28 & 0xF)), \
+  ('0' + ((n)>>24 & 0xF)), \
+  ('0' + ((n)>>20 & 0xF)), \
+  ('0' + ((n)>>16 & 0xF)), \
+  ('0' + ((n)>>12 & 0xF)), \
+  ('0' + ((n)>>8  & 0xF)), \
+  ('0' + ((n)>>4  & 0xF)), \
+  ('0' + ((n)     & 0xF))
+
+/* Construct a string literal encoding the version number components. */
+#ifdef COMPILER_VERSION_MAJOR
+char const info_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
+  COMPILER_VERSION_MAJOR,
+# ifdef COMPILER_VERSION_MINOR
+  '.', COMPILER_VERSION_MINOR,
+#  ifdef COMPILER_VERSION_PATCH
+   '.', COMPILER_VERSION_PATCH,
+#   ifdef COMPILER_VERSION_TWEAK
+    '.', COMPILER_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct a string literal encoding the internal version number. */
+#ifdef COMPILER_VERSION_INTERNAL
+char const info_version_internal[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_',
+  'i','n','t','e','r','n','a','l','[',
+  COMPILER_VERSION_INTERNAL,']','\0'};
+#endif
+
+/* Construct a string literal encoding the version number components. */
+#ifdef SIMULATE_VERSION_MAJOR
+char const info_simulate_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
+  SIMULATE_VERSION_MAJOR,
+# ifdef SIMULATE_VERSION_MINOR
+  '.', SIMULATE_VERSION_MINOR,
+#  ifdef SIMULATE_VERSION_PATCH
+   '.', SIMULATE_VERSION_PATCH,
+#   ifdef SIMULATE_VERSION_TWEAK
+    '.', SIMULATE_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]";
+char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]";
+
+
+
+
+#if !defined(__STDC__)
+# if (defined(_MSC_VER) && !defined(__clang__)) \
+  || (defined(__ibmxl__) || defined(__IBMC__))
+#  define C_DIALECT "90"
+# else
+#  define C_DIALECT
+# endif
+#elif __STDC_VERSION__ >= 201000L
+# define C_DIALECT "11"
+#elif __STDC_VERSION__ >= 199901L
+# define C_DIALECT "99"
+#else
+# define C_DIALECT "90"
+#endif
+const char* info_language_dialect_default =
+  "INFO" ":" "dialect_default[" C_DIALECT "]";
+
+/*--------------------------------------------------------------------------*/
+
+#ifdef ID_VOID_MAIN
+void main() {}
+#else
+# if defined(__CLASSIC_C__)
+int main(argc, argv) int argc; char *argv[];
+# else
+int main(int argc, char* argv[])
+# endif
+{
+  int require = 0;
+  require += info_compiler[argc];
+  require += info_platform[argc];
+  require += info_arch[argc];
+#ifdef COMPILER_VERSION_MAJOR
+  require += info_version[argc];
+#endif
+#ifdef COMPILER_VERSION_INTERNAL
+  require += info_version_internal[argc];
+#endif
+#ifdef SIMULATE_ID
+  require += info_simulate[argc];
+#endif
+#ifdef SIMULATE_VERSION_MAJOR
+  require += info_simulate_version[argc];
+#endif
+#if defined(__CRAYXE) || defined(__CRAYXC)
+  require += info_cray[argc];
+#endif
+  require += info_language_dialect_default[argc];
+  (void)argv;
+  return require;
+}
+#endif

imgui-submodule/imgui/examples/CMakeFiles/3.16.5/CompilerIdCXX/CMakeCXXCompilerId.cpp

@@ -0,0 +1,660 @@
+/* This source file must have a .cpp extension so that all C++ compilers
+   recognize the extension without flags.  Borland does not know .cxx for
+   example.  */
+#ifndef __cplusplus
+# error "A C compiler has been selected for C++."
+#endif
+
+
+/* Version number components: V=Version, R=Revision, P=Patch
+   Version date components:   YYYY=Year, MM=Month,   DD=Day  */
+
+#if defined(__COMO__)
+# define COMPILER_ID "Comeau"
+  /* __COMO_VERSION__ = VRR */
+# define COMPILER_VERSION_MAJOR DEC(__COMO_VERSION__ / 100)
+# define COMPILER_VERSION_MINOR DEC(__COMO_VERSION__ % 100)
+
+#elif defined(__INTEL_COMPILER) || defined(__ICC)
+# define COMPILER_ID "Intel"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# if defined(__GNUC__)
+#  define SIMULATE_ID "GNU"
+# endif
+  /* __INTEL_COMPILER = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__INTEL_COMPILER/100)
+# define COMPILER_VERSION_MINOR DEC(__INTEL_COMPILER/10 % 10)
+# if defined(__INTEL_COMPILER_UPDATE)
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER_UPDATE)
+# else
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER   % 10)
+# endif
+# if defined(__INTEL_COMPILER_BUILD_DATE)
+  /* __INTEL_COMPILER_BUILD_DATE = YYYYMMDD */
+#  define COMPILER_VERSION_TWEAK DEC(__INTEL_COMPILER_BUILD_DATE)
+# endif
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+# if defined(__GNUC__)
+#  define SIMULATE_VERSION_MAJOR DEC(__GNUC__)
+# elif defined(__GNUG__)
+#  define SIMULATE_VERSION_MAJOR DEC(__GNUG__)
+# endif
+# if defined(__GNUC_MINOR__)
+#  define SIMULATE_VERSION_MINOR DEC(__GNUC_MINOR__)
+# endif
+# if defined(__GNUC_PATCHLEVEL__)
+#  define SIMULATE_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
+# endif
+
+#elif defined(__PATHCC__)
+# define COMPILER_ID "PathScale"
+# define COMPILER_VERSION_MAJOR DEC(__PATHCC__)
+# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__)
+# if defined(__PATHCC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__)
+# endif
+
+#elif defined(__BORLANDC__) && defined(__CODEGEARC_VERSION__)
+# define COMPILER_ID "Embarcadero"
+# define COMPILER_VERSION_MAJOR HEX(__CODEGEARC_VERSION__>>24 & 0x00FF)
+# define COMPILER_VERSION_MINOR HEX(__CODEGEARC_VERSION__>>16 & 0x00FF)
+# define COMPILER_VERSION_PATCH DEC(__CODEGEARC_VERSION__     & 0xFFFF)
+
+#elif defined(__BORLANDC__)
+# define COMPILER_ID "Borland"
+  /* __BORLANDC__ = 0xVRR */
+# define COMPILER_VERSION_MAJOR HEX(__BORLANDC__>>8)
+# define COMPILER_VERSION_MINOR HEX(__BORLANDC__ & 0xFF)
+
+#elif defined(__WATCOMC__) && __WATCOMC__ < 1200
+# define COMPILER_ID "Watcom"
+   /* __WATCOMC__ = VVRR */
+# define COMPILER_VERSION_MAJOR DEC(__WATCOMC__ / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__WATCOMC__)
+# define COMPILER_ID "OpenWatcom"
+   /* __WATCOMC__ = VVRP + 1100 */
+# define COMPILER_VERSION_MAJOR DEC((__WATCOMC__ - 1100) / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__SUNPRO_CC)
+# define COMPILER_ID "SunPro"
+# if __SUNPRO_CC >= 0x5100
+   /* __SUNPRO_CC = 0xVRRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>12)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xFF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# else
+   /* __SUNPRO_CC = 0xVRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>8)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# endif
+
+#elif defined(__HP_aCC)
+# define COMPILER_ID "HP"
+  /* __HP_aCC = VVRRPP */
+# define COMPILER_VERSION_MAJOR DEC(__HP_aCC/10000)
+# define COMPILER_VERSION_MINOR DEC(__HP_aCC/100 % 100)
+# define COMPILER_VERSION_PATCH DEC(__HP_aCC     % 100)
+
+#elif defined(__DECCXX)
+# define COMPILER_ID "Compaq"
+  /* __DECCXX_VER = VVRRTPPPP */
+# define COMPILER_VERSION_MAJOR DEC(__DECCXX_VER/10000000)
+# define COMPILER_VERSION_MINOR DEC(__DECCXX_VER/100000  % 100)
+# define COMPILER_VERSION_PATCH DEC(__DECCXX_VER         % 10000)
+
+#elif defined(__IBMCPP__) && defined(__COMPILER_VER__)
+# define COMPILER_ID "zOS"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__ibmxl__) && defined(__clang__)
+# define COMPILER_ID "XLClang"
+# define COMPILER_VERSION_MAJOR DEC(__ibmxl_version__)
+# define COMPILER_VERSION_MINOR DEC(__ibmxl_release__)
+# define COMPILER_VERSION_PATCH DEC(__ibmxl_modification__)
+# define COMPILER_VERSION_TWEAK DEC(__ibmxl_ptf_fix_level__)
+
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ >= 800
+# define COMPILER_ID "XL"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ < 800
+# define COMPILER_ID "VisualAge"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__PGI)
+# define COMPILER_ID "PGI"
+# define COMPILER_VERSION_MAJOR DEC(__PGIC__)
+# define COMPILER_VERSION_MINOR DEC(__PGIC_MINOR__)
+# if defined(__PGIC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
+# endif
+
+#elif defined(_CRAYC)
+# define COMPILER_ID "Cray"
+# define COMPILER_VERSION_MAJOR DEC(_RELEASE_MAJOR)
+# define COMPILER_VERSION_MINOR DEC(_RELEASE_MINOR)
+
+#elif defined(__TI_COMPILER_VERSION__)
+# define COMPILER_ID "TI"
+  /* __TI_COMPILER_VERSION__ = VVVRRRPPP */
+# define COMPILER_VERSION_MAJOR DEC(__TI_COMPILER_VERSION__/1000000)
+# define COMPILER_VERSION_MINOR DEC(__TI_COMPILER_VERSION__/1000   % 1000)
+# define COMPILER_VERSION_PATCH DEC(__TI_COMPILER_VERSION__        % 1000)
+
+#elif defined(__FUJITSU) || defined(__FCC_VERSION) || defined(__fcc_version)
+# define COMPILER_ID "Fujitsu"
+
+#elif defined(__ghs__)
+# define COMPILER_ID "GHS"
+/* __GHS_VERSION_NUMBER = VVVVRP */
+# ifdef __GHS_VERSION_NUMBER
+# define COMPILER_VERSION_MAJOR DEC(__GHS_VERSION_NUMBER / 100)
+# define COMPILER_VERSION_MINOR DEC(__GHS_VERSION_NUMBER / 10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__GHS_VERSION_NUMBER      % 10)
+# endif
+
+#elif defined(__SCO_VERSION__)
+# define COMPILER_ID "SCO"
+
+#elif defined(__ARMCC_VERSION) && !defined(__clang__)
+# define COMPILER_ID "ARMCC"
+#if __ARMCC_VERSION >= 1000000
+  /* __ARMCC_VERSION = VRRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/1000000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION     % 10000)
+#else
+  /* __ARMCC_VERSION = VRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/100000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION    % 10000)
+#endif
+
+
+#elif defined(__clang__) && defined(__apple_build_version__)
+# define COMPILER_ID "AppleClang"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+# define COMPILER_VERSION_TWEAK DEC(__apple_build_version__)
+
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+-----------------------------------------------------------------------
+ dear imgui, v1.76 WIP
+-----------------------------------------------------------------------
+ examples/README.txt
+ (This is the README file for the examples/ folder. See docs/ for more documentation)
+-----------------------------------------------------------------------
+
+Dear ImGui is highly portable and only requires a few things to run and render:
+
+ - Providing mouse/keyboard inputs
+ - Uploading the font atlas texture into graphics memory
+ - Providing a render function to render indexed textured triangles
+ - Optional: clipboard support, mouse cursor supports, Windows IME support, etc.
+
+This is essentially what the example bindings in this folder are providing + obligatory portability cruft.
+
+It is important to understand the difference between the core Dear ImGui library (files in the root folder)
+and examples bindings which we are describing here (examples/ folder).
+You should be able to write bindings for pretty much any platform and any 3D graphics API. With some extra
+effort you can even perform the rendering remotely, on a different machine than the one running the logic.
+
+This folder contains two things:
+
+ - Example bindings for popular platforms/graphics API, which you can use as is or adapt for your own use.
+   They are the imgui_impl_XXXX files found in the examples/ folder.
+
+ - Example applications (standalone, ready-to-build) using the aforementioned bindings.
+   They are the in the XXXX_example/ sub-folders.
+
+You can find binaries of some of those example applications at:
+  http://www.dearimgui.org/binaries
+
+
+---------------------------------------
+ MISC COMMENTS AND SUGGESTIONS
+---------------------------------------
+
+ - Read FAQ at http://dearimgui.org/faq
+
+ - Please read 'PROGRAMMER GUIDE' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
+   Please read the comments and instruction at the top of each file.
+
+ - If you are using of the backend provided here, so you can copy the imgui_impl_xxx.cpp/h files
+   to your project and use them unmodified. Each imgui_impl_xxxx.cpp comes with its own individual
+   ChangeLog at the top of the .cpp files, so if you want to update them later it will be easier to
+   catch up with what changed.
+
+ - Dear ImGui has 0 to 1 frame of lag for most behaviors, at 60 FPS your experience should be pleasant.
+   However, consider that OS mouse cursors are typically drawn through a specific hardware accelerated path
+   and will feel smoother than common GPU rendered contents (including Dear ImGui windows).
+   You may experiment with the io.MouseDrawCursor flag to request Dear ImGui to draw a mouse cursor itself,
+   to visualize the lag between a hardware cursor and a software cursor. However, rendering a mouse cursor
+   at 60 FPS will feel slow. It might be beneficial to the user experience to switch to a software rendered
+   cursor only when an interactive drag is in progress.
+   Note that some setup or GPU drivers are likely to be causing extra lag depending on their settings.
+   If you feel that dragging windows feels laggy and you are not sure who to blame: try to build an
+   application drawing a shape directly under the mouse cursor.
+
+
+---------------------------------------
+ EXAMPLE BINDINGS
+---------------------------------------
+
+Most the example bindings are split in 2 parts:
+
+ - The "Platform" bindings, in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, windowing.
+   Examples: Windows (imgui_impl_win32.cpp), GLFW (imgui_impl_glfw.cpp), SDL2 (imgui_impl_sdl.cpp), etc.
+
+ - The "Renderer" bindings, in charge of: creating the main font texture, rendering imgui draw data.
+   Examples: DirectX11 (imgui_impl_dx11.cpp), GL3 (imgui_impl_opengl3.cpp), Vulkan (imgui_impl_vulkan.cpp), etc.
+
+ - The example _applications_ usually combine 1 platform + 1 renderer binding to create a working program.
+   Examples: the example_win32_directx11/ application combines imgui_impl_win32.cpp + imgui_impl_dx11.cpp.
+
+ - Some bindings for higher level frameworks carry both "Platform" and "Renderer" parts in one file.
+   This is the case for Allegro 5 (imgui_impl_allegro5.cpp), Marmalade (imgui_impl_marmalade5.cpp).
+
+ - If you use your own engine, you may decide to use some of existing bindings and/or rewrite some using
+   your own API. As a recommendation, if you are new to Dear ImGui, try using the existing binding as-is
+   first, before moving on to rewrite some of the code. Although it is tempting to rewrite both of the
+   imgui_impl_xxxx files to fit under your coding style, consider that it is not necessary!
+   In fact, if you are new to Dear ImGui, rewriting them will almost always be harder.
+
+   Example: your engine is built over Windows + DirectX11 but you have your own high-level rendering
+   system layered over DirectX11.
+     Suggestion: step 1: try using imgui_impl_win32.cpp + imgui_impl_dx11.cpp first.
+     Once this work, _if_ you want you can replace the imgui_impl_dx11.cpp code with a custom renderer
+     using your own functions, etc.
+     Please consider using the bindings to the lower-level platform/graphics API as-is.
+
+   Example: your engine is multi-platform (consoles, phones, etc.), you have high-level systems everywhere.
+     Suggestion: step 1: try using a non-portable binding first (e.g. win32 + underlying graphics API)!
+     This is counter-intuitive, but this will get you running faster! Once you better understand how imgui
+     works and is bound, you can rewrite the code using your own systems.
+
+ - Road-map: Dear ImGui 1.80 (WIP currently in the "docking" branch) will allows imgui windows to be
+   seamlessly detached from the main application window. This is achieved using an extra layer to the
+   platform and renderer bindings, which allows Dear ImGui to communicate platform-specific requests.
+   If you decide to use unmodified imgui_impl_xxxx.cpp files, you will automatically benefit from
+   improvements and fixes related to viewports and platform windows without extra work on your side.
+
+
+List of Platforms Bindings in this repository:
+
+    imgui_impl_glfw.cpp       ; GLFW (Windows, macOS, Linux, etc.) http://www.glfw.org/
+    imgui_impl_osx.mm         ; macOS native API (not as feature complete as glfw/sdl back-ends)
+    imgui_impl_sdl.cpp        ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
+    imgui_impl_win32.cpp      ; Win32 native API (Windows)
+    imgui_impl_glut.cpp       ; GLUT/FreeGLUT (absolutely not recommended in 2020!)
+
+List of Renderer Bindings in this repository:
+
+    imgui_impl_dx9.cpp        ; DirectX9
+    imgui_impl_dx10.cpp       ; DirectX10
+    imgui_impl_dx11.cpp       ; DirectX11
+    imgui_impl_dx12.cpp       ; DirectX12
+    imgui_impl_metal.mm       ; Metal (with ObjC)
+    imgui_impl_opengl2.cpp    ; OpenGL 2 (legacy, fixed pipeline <- don't use with modern OpenGL context)
+    imgui_impl_opengl3.cpp    ; OpenGL 3/4, OpenGL ES 2, OpenGL ES 3 (modern programmable pipeline)
+    imgui_impl_vulkan.cpp     ; Vulkan
+
+List of high-level Frameworks Bindings in this repository: (combine Platform + Renderer)
+
+    imgui_impl_allegro5.cpp
+    imgui_impl_marmalade.cpp
+
+Note that Dear ImGui works with Emscripten. The examples_emscripten/ app uses imgui_impl_sdl.cpp and
+imgui_impl_opengl3.cpp, but other combinations are possible.
+
+Third-party framework, graphics API and languages bindings are listed at:
+
+    https://github.com/ocornut/imgui/wiki/Bindings
+
+Including backends for:
+
+    AGS/Adventure Game Studio, Amethyst, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium,
+    GML/Game Maker Studio2, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, NanoRT, Nim Game Lib,
+    Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, px_render, Qt/QtDirect3D, SFML, Sokol,
+    Unreal Engine 4, vtk, Win32 GDI, etc.
+
+Not sure which to use?
+Recommended platform/frameworks:
+
+    GLFW    https://github.com/glfw/glfw        Use imgui_impl_glfw.cpp
+    SDL2    https://www.libsdl.org              Use imgui_impl_sdl.cpp
+    Sokol   https://github.com/floooh/sokol     Use util/sokol_imgui.h in Sokol repository.
+
+Those will allow you to create portable applications and will solve and abstract away many issues.
+
+
+---------------------------------------
+ EXAMPLE APPLICATIONS
+---------------------------------------
+
+Building:
+  Unfortunately in 2020 it is still tedious to create and maintain portable build files using external
+  libraries (the kind we're using here to create a window and render 3D triangles) without relying on
+  third party software. For most examples here I choose to provide:
+   - Makefiles for Linux/OSX
+   - Batch files for Visual Studio 2008+
+   - A .sln project file for Visual Studio 2010+
+   - Xcode project files for the Apple examples
+  Please let me know if they don't work with your setup!
+  You can probably just import the imgui_impl_xxx.cpp/.h files into your own codebase or compile those
+  directly with a command-line compiler.
+
+  If you are interested in using Cmake to build and links examples, see:
+    https://github.com/ocornut/imgui/pull/1713 and https://github.com/ocornut/imgui/pull/3027
+
+
+example_allegro5/
+    Allegro 5 example.
+    = main.cpp + imgui_impl_allegro5.cpp
+
+example_apple_metal/
+    OSX & iOS + Metal.
+    = main.m + imgui_impl_osx.mm + imgui_impl_metal.mm
+    It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
+    (NB: imgui_impl_osx.mm is currently not as feature complete as other platforms back-ends.
+    You may prefer to use the GLFW Or SDL back-ends, which will also support Windows and Linux.)
+
+example_apple_opengl2/
+    OSX + OpenGL2.
+    = main.mm + imgui_impl_osx.mm + imgui_impl_opengl2.cpp
+    (NB: imgui_impl_osx.mm is currently not as feature complete as other platforms back-ends.
+    You may prefer to use the GLFW Or SDL back-ends, which will also support Windows and Linux.)
+
+example_empscripten:
+    Emcripten + SDL2 + OpenGL3+/ES2/ES3 example.
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp
+    Note that other examples based on SDL or GLFW + OpenGL could easily be modified to work with Emscripten.
+    We provide this to make the Emscripten differences obvious, and have them not pollute all other examples.
+
+example_glfw_metal/
+    GLFW (Mac) + Metal example.
+    = main.mm + imgui_impl_glfw.cpp + imgui_impl_metal.mm
+
+example_glfw_opengl2/
+    GLFW + OpenGL2 example (legacy, fixed pipeline).
+    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
+    **Prefer using OPENGL3 code (with gl3w/glew/glad/glbindings, you can replace the OpenGL function loader)**
+    This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
+    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
+    make things more complicated, will require your code to reset many OpenGL attributes to their initial
+    state, and might confuse your GPU driver. One star, not recommended.
+
+example_glfw_opengl3/
+    GLFW (Win32, Mac, Linux) + OpenGL3+/ES2/ES3 example (programmable pipeline).
+    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp
+    This uses more modern OpenGL calls and custom shaders.
+    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
+    (Please be mindful that accessing OpenGL3+ functions requires a function loader, which are a frequent
+    source for confusion for new users. We use a loader in imgui_impl_opengl3.cpp which may be different
+    from the one your app normally use. Read imgui_impl_opengl3.h for details and how to change it.)
+
+example_glfw_vulkan/
+    GLFW (Win32, Mac, Linux) + Vulkan example.
+    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+    This is quite long and tedious, because: Vulkan.
+    For this example, the main.cpp file exceptionally use helpers function from imgui_impl_vulkan.h/cpp.
+
+example_glut_opengl2/
+    GLUT (e.g., FreeGLUT on Linux/Windows, GLUT framework on OSX) + OpenGL2.
+    = main.cpp + imgui_impl_glut.cpp + imgui_impl_opengl2.cpp
+    Note that GLUT/FreeGLUT is largely obsolete software, prefer using GLFW or SDL.
+
+example_marmalade/
+    Marmalade example using IwGx.
+    = main.cpp + imgui_impl_marmalade.cpp
+
+example_null
+    Null example, compile and link imgui, create context, run headless with no inputs and no graphics output.
+    = main.cpp
+    This is used to quickly test compilation of core imgui files in as many setups as possible.
+    Because this application doesn't create a window nor a graphic context, there's no graphics output.
+
+example_sdl_directx11/
+    SDL2 + DirectX11 example, Windows only.
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_dx11.cpp
+    This to demonstrate usage of DirectX with SDL.
+
+example_sdl_metal/
+    SDL2 (Mac) + Metal example.
+    = main.mm + imgui_impl_sdl.cpp + imgui_impl_metal.mm
+
+example_sdl_opengl2/
+    SDL2 (Win32, Mac, Linux etc.) + OpenGL example (legacy, fixed pipeline).
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl2.cpp
+    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
+    **Prefer using OPENGL3 code (with gl3w/glew/glad/glbindings, you can replace the OpenGL function loader)**
+    This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
+    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
+    make things more complicated, will require your code to reset many OpenGL attributes to their initial
+    state, and might confuse your GPU driver. One star, not recommended.
+
+example_sdl_opengl3/
+    SDL2 (Win32, Mac, Linux, etc.) + OpenGL3+/ES2/ES3 example.
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp
+    This uses more modern OpenGL calls and custom shaders.
+    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
+    (Please be mindful that accessing OpenGL3+ functions requires a function loader, which are a frequent
+    source for confusion for new users. We use a loader in imgui_impl_opengl3.cpp which may be different
+    from the one your app normally use. Read imgui_impl_opengl3.h for details and how to change it.)
+
+example_sdl_vulkan/
+    SDL2 (Win32, Mac, Linux, etc.) + Vulkan example.
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_vulkan.cpp
+    This is quite long and tedious, because: Vulkan.
+    For this example, the main.cpp file exceptionally use helpers function from imgui_impl_vulkan.h/cpp.
+
+example_win32_directx9/
+    DirectX9 example, Windows only.
+    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx9.cpp
+
+example_win32_directx10/
+    DirectX10 example, Windows only.
+    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx10.cpp
+
+example_win32_directx11/
+    DirectX11 example, Windows only.
+    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx11.cpp
+
+example_win32_directx12/
+    DirectX12 example, Windows only.
+    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx12.cpp
+    This is quite long and tedious, because: DirectX12.

imgui-submodule/imgui/examples/cmake_install.cmake

@@ -0,0 +1,65 @@
+# Install script for directory: /home/mari/projects/cpp/opengl-playground
+
+# Set the install prefix
+if(NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
+
+# Set the install configuration name.
+if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME)
+  if(BUILD_TYPE)
+    string(REGEX REPLACE "^[^A-Za-z0-9_]+" ""
+           CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}")
+  else()
+    set(CMAKE_INSTALL_CONFIG_NAME "")
+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
+endif()
+
+# Set the component getting installed.
+if(NOT CMAKE_INSTALL_COMPONENT)
+  if(COMPONENT)
+    message(STATUS "Install component: \"${COMPONENT}\"")
+    set(CMAKE_INSTALL_COMPONENT "${COMPONENT}")
+  else()
+    set(CMAKE_INSTALL_COMPONENT)
+  endif()
+endif()
+
+# Install shared libraries without execute permission?
+if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  set(CMAKE_INSTALL_SO_NO_EXE "0")
+endif()
+
+# Is this installation the result of a crosscompile?
+if(NOT DEFINED CMAKE_CROSSCOMPILING)
+  set(CMAKE_CROSSCOMPILING "FALSE")
+endif()
+
+if("x${CMAKE_INSTALL_COMPONENT}x" STREQUAL "xUnspecifiedx" OR NOT CMAKE_INSTALL_COMPONENT)
+  if(EXISTS "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/opengl-playground" AND
+     NOT IS_SYMLINK "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/opengl-playground")
+    file(RPATH_CHECK
+         FILE "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/opengl-playground"
+         RPATH "")
+  endif()
+  file(INSTALL DESTINATION "${CMAKE_INSTALL_PREFIX}/bin" TYPE EXECUTABLE FILES "/home/mari/projects/cpp/opengl-playground/imgui-submodule/imgui/examples/opengl-playground")
+  if(EXISTS "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/opengl-playground" AND
+     NOT IS_SYMLINK "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/opengl-playground")
+    if(CMAKE_INSTALL_DO_STRIP)
+      execute_process(COMMAND "/usr/bin/strip" "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/bin/opengl-playground")
+    endif()
+  endif()
+endif()
+
+if(CMAKE_INSTALL_COMPONENT)
+  set(CMAKE_INSTALL_MANIFEST "install_manifest_${CMAKE_INSTALL_COMPONENT}.txt")
+else()
+  set(CMAKE_INSTALL_MANIFEST "install_manifest.txt")
+endif()
+
+string(REPLACE ";" "\n" CMAKE_INSTALL_MANIFEST_CONTENT
+       "${CMAKE_INSTALL_MANIFEST_FILES}")
+file(WRITE "/home/mari/projects/cpp/opengl-playground/imgui-submodule/imgui/examples/${CMAKE_INSTALL_MANIFEST}"
+     "${CMAKE_INSTALL_MANIFEST_CONTENT}")

imgui-submodule/imgui/examples/example_allegro5/README.md

@@ -0,0 +1,35 @@
+
+# Configuration
+
+Dear ImGui outputs 16-bit vertex indices by default.
+Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile dear imgui with 32-bit indices.
+You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename.
+We are providing `imconfig_allegro5.h` that enables 32-bit indices.
+Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion.
+
+# How to Build
+
+### On Ubuntu 14.04+ and macOS
+
+```bash
+g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. main.cpp ../imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_main -lallegro_primitives -o allegro5_example
+```
+
+On macOS, install Allegro with homebrew: `brew install allegro`.
+
+### On Windows with Visual Studio's CLI
+
+You may install Allegro using vcpkg:
+```
+git clone https://github.com/Microsoft/vcpkg
+cd vcpkg
+.\bootstrap-vcpkg.bat
+.\vcpkg install allegro5
+.\vcpkg integrate install    ; optional, automatically register include/libs in Visual Studio
+```
+
+Build:
+```
+set ALLEGRODIR=path_to_your_allegro5_folder
+cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" /I .. /I ..\.. main.cpp ..\imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib
+```

imgui-submodule/imgui/examples/example_allegro5/imconfig_allegro5.h

@@ -0,0 +1,11 @@
+//-----------------------------------------------------------------------------
+// COMPILE-TIME OPTIONS FOR DEAR IMGUI ALLEGRO 5 EXAMPLE
+// See imconfig.h for the full template
+// Because Allegro doesn't support 16-bit vertex indices, we enable the compile-time option of imgui to use 32-bit indices
+//-----------------------------------------------------------------------------
+
+#pragma once
+
+// Use 32-bit vertex indices because Allegro doesn't support 16-bit ones
+// This allows us to avoid converting vertices format at runtime
+#define ImDrawIdx  int

imgui-submodule/imgui/examples/example_allegro5/main.cpp

@@ -0,0 +1,135 @@
+// dear imgui: standalone example application for Allegro 5
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include <stdint.h>
+#include <allegro5/allegro.h>
+#include <allegro5/allegro_primitives.h>
+#include "imgui.h"
+#include "imgui_impl_allegro5.h"
+
+int main(int, char**)
+{
+    // Setup Allegro
+    al_init();
+    al_install_keyboard();
+    al_install_mouse();
+    al_init_primitives_addon();
+    al_set_new_display_flags(ALLEGRO_RESIZABLE);
+    ALLEGRO_DISPLAY* display = al_create_display(1280, 720);
+    al_set_window_title(display, "Dear ImGui Allegro 5 example");
+    ALLEGRO_EVENT_QUEUE* queue = al_create_event_queue();
+    al_register_event_source(queue, al_get_display_event_source(display));
+    al_register_event_source(queue, al_get_keyboard_event_source());
+    al_register_event_source(queue, al_get_mouse_event_source());
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplAllegro5_Init(display);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool running = true;
+    while (running)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        ALLEGRO_EVENT ev;
+        while (al_get_next_event(queue, &ev))
+        {
+            ImGui_ImplAllegro5_ProcessEvent(&ev);
+            if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
+                running = false;
+            if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
+            {
+                ImGui_ImplAllegro5_InvalidateDeviceObjects();
+                al_acknowledge_resize(display);
+                ImGui_ImplAllegro5_CreateDeviceObjects();
+            }
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplAllegro5_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        al_clear_to_color(al_map_rgba_f(clear_color.x, clear_color.y, clear_color.z, clear_color.w));
+        ImGui_ImplAllegro5_RenderDrawData(ImGui::GetDrawData());
+        al_flip_display();
+    }
+
+    // Cleanup
+    ImGui_ImplAllegro5_Shutdown();
+    ImGui::DestroyContext();
+    al_destroy_event_queue(queue);
+    al_destroy_display(display);
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_apple_metal/README.md

@@ -0,0 +1,8 @@
+# iOS / OSX Metal example
+
+## Introduction
+
+This example shows how to integrate Dear ImGui with Metal. It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
+
+(NB: you may still want to use GLFW or SDL which will also support Windows, Linux along with OSX.)
+

imgui-submodule/imgui/examples/example_apple_metal/Shared/AppDelegate.h

@@ -0,0 +1,18 @@
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IPHONE
+
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+@property (strong, nonatomic) UIWindow *window;
+@end
+
+#else
+
+#import <Cocoa/Cocoa.h>
+
+@interface AppDelegate : NSObject <NSApplicationDelegate>
+@end
+
+#endif

imgui-submodule/imgui/examples/example_apple_metal/Shared/AppDelegate.m

@@ -0,0 +1,11 @@
+#import "AppDelegate.h"
+
+@implementation AppDelegate
+
+#if TARGET_OS_OSX
+- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
+    return YES;
+}
+#endif
+
+@end

imgui-submodule/imgui/examples/example_apple_metal/Shared/Renderer.h

@@ -0,0 +1,8 @@
+#import <MetalKit/MetalKit.h>
+
+@interface Renderer : NSObject <MTKViewDelegate>
+
+-(nonnull instancetype)initWithView:(nonnull MTKView *)view;
+
+@end
+

imgui-submodule/imgui/examples/example_apple_metal/Shared/Renderer.mm

@@ -0,0 +1,129 @@
+#import "Renderer.h"
+#import <Metal/Metal.h>
+
+#include "imgui.h"
+#include "imgui_impl_metal.h"
+
+#if TARGET_OS_OSX
+#include "imgui_impl_osx.h"
+#endif
+
+@interface Renderer ()
+@property (nonatomic, strong) id <MTLDevice> device;
+@property (nonatomic, strong) id <MTLCommandQueue> commandQueue;
+@end
+
+@implementation Renderer
+
+-(nonnull instancetype)initWithView:(nonnull MTKView *)view;
+{
+    self = [super init];
+    if(self)
+    {
+        _device = view.device;
+        _commandQueue = [_device newCommandQueue];
+
+        IMGUI_CHECKVERSION();
+        ImGui::CreateContext();
+        ImGui::StyleColorsDark();
+
+        ImGui_ImplMetal_Init(_device);
+    }
+
+    return self;
+}
+
+- (void)drawInMTKView:(MTKView *)view
+{
+    ImGuiIO &io = ImGui::GetIO();
+    io.DisplaySize.x = view.bounds.size.width;
+    io.DisplaySize.y = view.bounds.size.height;
+
+#if TARGET_OS_OSX
+    CGFloat framebufferScale = view.window.screen.backingScaleFactor ?: NSScreen.mainScreen.backingScaleFactor;
+#else
+    CGFloat framebufferScale = view.window.screen.scale ?: UIScreen.mainScreen.scale;
+#endif
+    io.DisplayFramebufferScale = ImVec2(framebufferScale, framebufferScale);
+
+    io.DeltaTime = 1 / float(view.preferredFramesPerSecond ?: 60);
+
+    id<MTLCommandBuffer> commandBuffer = [self.commandQueue commandBuffer];
+
+    static bool show_demo_window = true;
+    static bool show_another_window = false;
+    static float clear_color[4] = { 0.28f, 0.36f, 0.5f, 1.0f };
+
+    MTLRenderPassDescriptor *renderPassDescriptor = view.currentRenderPassDescriptor;
+    if (renderPassDescriptor != nil)
+    {
+        renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
+
+        // Here, you could do additional rendering work, including other passes as necessary.
+
+        id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
+        [renderEncoder pushDebugGroup:@"ImGui demo"];
+
+        // Start the Dear ImGui frame
+        ImGui_ImplMetal_NewFrame(renderPassDescriptor);
+#if TARGET_OS_OSX
+        ImGui_ImplOSX_NewFrame(view);
+#endif
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        ImDrawData *drawData = ImGui::GetDrawData();
+        ImGui_ImplMetal_RenderDrawData(drawData, commandBuffer, renderEncoder);
+
+        [renderEncoder popDebugGroup];
+        [renderEncoder endEncoding];
+
+        [commandBuffer presentDrawable:view.currentDrawable];
+    }
+
+    [commandBuffer commit];
+}
+
+- (void)mtkView:(MTKView *)view drawableSizeWillChange:(CGSize)size
+{
+}
+
+@end

imgui-submodule/imgui/examples/example_apple_metal/Shared/ViewController.h

@@ -0,0 +1,19 @@
+#import <Metal/Metal.h>
+#import <MetalKit/MetalKit.h>
+#import "Renderer.h"
+
+#if TARGET_OS_IPHONE
+
+#import <UIKit/UIKit.h>
+
+@interface ViewController : UIViewController
+@end
+
+#else
+
+#import <Cocoa/Cocoa.h>
+
+@interface ViewController : NSViewController
+@end
+
+#endif

imgui-submodule/imgui/examples/example_apple_metal/Shared/ViewController.mm

@@ -0,0 +1,129 @@
+#import "ViewController.h"
+#import "Renderer.h"
+#include "imgui.h"
+
+#if TARGET_OS_OSX
+#include "imgui_impl_osx.h"
+#endif
+
+@interface ViewController ()
+@property (nonatomic, readonly) MTKView *mtkView;
+@property (nonatomic, strong) Renderer *renderer;
+@end
+
+@implementation ViewController
+
+- (MTKView *)mtkView {
+    return (MTKView *)self.view;
+}
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+
+    self.mtkView.device = MTLCreateSystemDefaultDevice();
+
+    if (!self.mtkView.device) {
+        NSLog(@"Metal is not supported");
+        abort();
+    }
+
+    self.renderer = [[Renderer alloc] initWithView:self.mtkView];
+
+    [self.renderer mtkView:self.mtkView drawableSizeWillChange:self.mtkView.bounds.size];
+
+    self.mtkView.delegate = self.renderer;
+
+#if TARGET_OS_OSX
+    // Add a tracking area in order to receive mouse events whenever the mouse is within the bounds of our view
+    NSTrackingArea *trackingArea = [[NSTrackingArea alloc] initWithRect:NSZeroRect
+                                                                options:NSTrackingMouseMoved | NSTrackingInVisibleRect | NSTrackingActiveAlways
+                                                                  owner:self
+                                                               userInfo:nil];
+    [self.view addTrackingArea:trackingArea];
+
+    // If we want to receive key events, we either need to be in the responder chain of the key view,
+    // or else we can install a local monitor. The consequence of this heavy-handed approach is that
+    // we receive events for all controls, not just Dear ImGui widgets. If we had native controls in our
+    // window, we'd want to be much more careful than just ingesting the complete event stream, though we
+    // do make an effort to be good citizens by passing along events when Dear ImGui doesn't want to capture.
+    NSEventMask eventMask = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged | NSEventTypeScrollWheel;
+    [NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^NSEvent * _Nullable(NSEvent *event) {
+        BOOL wantsCapture = ImGui_ImplOSX_HandleEvent(event, self.view);
+        if (event.type == NSEventTypeKeyDown && wantsCapture) {
+            return nil;
+        } else {
+            return event;
+        }
+
+    }];
+
+    ImGui_ImplOSX_Init();
+#endif
+}
+
+#if TARGET_OS_OSX
+
+- (void)mouseMoved:(NSEvent *)event {
+    ImGui_ImplOSX_HandleEvent(event, self.view);
+}
+
+- (void)mouseDown:(NSEvent *)event {
+    ImGui_ImplOSX_HandleEvent(event, self.view);
+}
+
+- (void)mouseUp:(NSEvent *)event {
+    ImGui_ImplOSX_HandleEvent(event, self.view);
+}
+
+- (void)mouseDragged:(NSEvent *)event {
+    ImGui_ImplOSX_HandleEvent(event, self.view);
+}
+
+- (void)scrollWheel:(NSEvent *)event {
+    ImGui_ImplOSX_HandleEvent(event, self.view);
+}
+
+#elif TARGET_OS_IOS
+
+// This touch mapping is super cheesy/hacky. We treat any touch on the screen
+// as if it were a depressed left mouse button, and we don't bother handling
+// multitouch correctly at all. This causes the "cursor" to behave very erratically
+// when there are multiple active touches. But for demo purposes, single-touch
+// interaction actually works surprisingly well.
+- (void)updateIOWithTouchEvent:(UIEvent *)event {
+    UITouch *anyTouch = event.allTouches.anyObject;
+    CGPoint touchLocation = [anyTouch locationInView:self.view];
+    ImGuiIO &io = ImGui::GetIO();
+    io.MousePos = ImVec2(touchLocation.x, touchLocation.y);
+
+    BOOL hasActiveTouch = NO;
+    for (UITouch *touch in event.allTouches) {
+        if (touch.phase != UITouchPhaseEnded && touch.phase != UITouchPhaseCancelled) {
+            hasActiveTouch = YES;
+            break;
+        }
+    }
+    io.MouseDown[0] = hasActiveTouch;
+}
+
+- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
+    [self updateIOWithTouchEvent:event];
+}
+
+- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
+    [self updateIOWithTouchEvent:event];
+}
+
+- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
+    [self updateIOWithTouchEvent:event];
+}
+
+- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
+    [self updateIOWithTouchEvent:event];
+}
+
+#endif
+
+@end
+

imgui-submodule/imgui/examples/example_apple_metal/Shared/main.m

@@ -0,0 +1,22 @@
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IPHONE
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[]) {
+    @autoreleasepool {
+        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+    }
+}
+
+#else
+
+#import <Cocoa/Cocoa.h>
+
+int main(int argc, const char * argv[]) {
+    return NSApplicationMain(argc, argv);
+}
+
+#endif

imgui-submodule/imgui/examples/example_apple_metal/example_apple_metal.xcodeproj/project.pbxproj

@@ -0,0 +1,539 @@
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+				07A82ED72139413C0078D120 /* imgui_widgets.cpp */,
+			);
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+			);
+			buildRules = (
+			);
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+			);
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+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = example_apple_metal_macos;
+			productName = "imguiex macOS";
+			productReference = 8307E7DA20E9F9C900473790 /* example_apple_metal.app */;
+			productType = "com.apple.product-type.application";
+		};
+/* End PBXNativeTarget section */
+
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+			attributes = {
+				LastUpgradeCheck = 0940;
+				ORGANIZATIONNAME = "Warren Moore";
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+			buildConfigurationList = 8307E7B920E9F9C700473790 /* Build configuration list for PBXProject "example_apple_metal" */;
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imgui-submodule/imgui/examples/example_apple_metal/iOS/Base.lproj/Main.storyboard

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+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14088"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="tXr-a1-R10">
+            <objects>
+                <viewController id="BV1-FR-VrT" customClass="ViewController" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="3se-qz-xqx" customClass="MTKView">
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+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
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+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="SZV-WD-TEh" sceneMemberID="firstResponder"/>
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+</document>

imgui-submodule/imgui/examples/example_apple_metal/iOS/Info-iOS.plist

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>imgui</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
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+	<true/>
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+	<string>Launch Screen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
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+		<string>metal</string>
+	</array>
+	<key>UIRequiresFullScreen</key>
+	<true/>
+	<key>UIStatusBarHidden</key>
+	<true/>
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+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
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+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

imgui-submodule/imgui/examples/example_apple_metal/iOS/Launch Screen.storyboard

@@ -0,0 +1,29 @@
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+            <point key="canvasLocation" x="53" y="375"/>
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+    </scenes>
+</document>

imgui-submodule/imgui/examples/example_apple_metal/macOS/Base.lproj/Main.storyboard

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+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="14269.14"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
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+                            </menuItem>
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+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
+                                    <items>
+                                        <menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
+                                            <connections>
+                                                <action selector="performMiniaturize:" target="Ady-hI-5gd" id="VwT-WD-YPe"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Zoom" id="R4o-n2-Eq4">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="performZoom:" target="Ady-hI-5gd" id="DIl-cC-cCs"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                    <connections>
+                        <outlet property="delegate" destination="Voe-Tx-rLC" id="PrD-fu-P6m"/>
+                    </connections>
+                </application>
+                <customObject id="Voe-Tx-rLC" customClass="AppDelegate"/>
+                <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
+                <customObject id="Ady-hI-5gd" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="75" y="0.0"/>
+        </scene>
+        <!--Window Controller-->
+        <scene sceneID="R2V-B0-nI4">
+            <objects>
+                <windowController id="B8D-0N-5wS" sceneMemberID="viewController">
+                    <window key="window" title="ImGui" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" titleVisibility="hidden" id="IQv-IB-iLA">
+                        <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
+                        <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
+                        <rect key="contentRect" x="196" y="240" width="480" height="270"/>
+                        <rect key="screenRect" x="0.0" y="0.0" width="1680" height="1027"/>
+                        <connections>
+                            <outlet property="delegate" destination="B8D-0N-5wS" id="CyC-Pq-WbN"/>
+                        </connections>
+                    </window>
+                    <connections>
+                        <segue destination="XfG-lQ-9wD" kind="relationship" relationship="window.shadowedContentViewController" id="cq2-FE-JQM"/>
+                    </connections>
+                </windowController>
+                <customObject id="Oky-zY-oP4" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-128" y="390"/>
+        </scene>
+        <!--View Controller-->
+        <scene sceneID="hIz-AP-VOD">
+            <objects>
+                <viewController id="XfG-lQ-9wD" customClass="ViewController" sceneMemberID="viewController">
+                    <view key="view" wantsLayer="YES" id="m2S-Jp-Qdl" customClass="MTKView">
+                        <rect key="frame" x="0.0" y="0.0" width="1280" height="720"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </view>
+                </viewController>
+                <customObject id="rPt-NT-nkU" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="205" y="1032"/>
+        </scene>
+    </scenes>
+</document>

imgui-submodule/imgui/examples/example_apple_metal/macOS/Info-macOS.plist

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>imgui</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2018 Warren Moore. All rights reserved.</string>
+	<key>NSMainStoryboardFile</key>
+	<string>Main</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

imgui-submodule/imgui/examples/example_apple_opengl2/example_apple_opengl2.xcodeproj/project.pbxproj

@@ -0,0 +1,326 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 48;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		07A82EDB213941D00078D120 /* imgui_widgets.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 07A82EDA213941D00078D120 /* imgui_widgets.cpp */; };
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+		4080A9A220B034280036BA46 /* imgui_impl_opengl2.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4080A99E20B034280036BA46 /* imgui_impl_opengl2.cpp */; };
+		4080A9AD20B0343C0036BA46 /* imgui_demo.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4080A9A620B0343C0036BA46 /* imgui_demo.cpp */; };
+		4080A9AE20B0343C0036BA46 /* imgui.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4080A9A720B0343C0036BA46 /* imgui.cpp */; };
+		4080A9AF20B0343C0036BA46 /* imgui_draw.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */; };
+		4080A9B020B0347A0036BA46 /* imgui_impl_osx.mm in Sources */ = {isa = PBXBuildFile; fileRef = 4080A99F20B034280036BA46 /* imgui_impl_osx.mm */; };
+		4080A9B320B034E40036BA46 /* Cocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4080A9B220B034E40036BA46 /* Cocoa.framework */; };
+		4080A9B520B034EA0036BA46 /* OpenGL.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4080A9B420B034EA0036BA46 /* OpenGL.framework */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		4080A96920B029B00036BA46 /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = /usr/share/man/man1/;
+			dstSubfolderSpec = 0;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 1;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		07A82EDA213941D00078D120 /* imgui_widgets.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_widgets.cpp; path = ../../imgui_widgets.cpp; sourceTree = "<group>"; };
+		4080A96B20B029B00036BA46 /* example_osx_opengl2 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = example_osx_opengl2; sourceTree = BUILT_PRODUCTS_DIR; };
+		4080A98A20B02CD90036BA46 /* main.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = main.mm; sourceTree = SOURCE_ROOT; };
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+		4080A99F20B034280036BA46 /* imgui_impl_osx.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = imgui_impl_osx.mm; path = ../imgui_impl_osx.mm; sourceTree = "<group>"; };
+		4080A9A020B034280036BA46 /* imgui_impl_opengl2.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_impl_opengl2.h; path = ../imgui_impl_opengl2.h; sourceTree = "<group>"; };
+		4080A9A120B034280036BA46 /* imgui_impl_osx.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_impl_osx.h; path = ../imgui_impl_osx.h; sourceTree = "<group>"; };
+		4080A9A520B0343C0036BA46 /* imgui_internal.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_internal.h; path = ../../imgui_internal.h; sourceTree = "<group>"; };
+		4080A9A620B0343C0036BA46 /* imgui_demo.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_demo.cpp; path = ../../imgui_demo.cpp; sourceTree = "<group>"; };
+		4080A9A720B0343C0036BA46 /* imgui.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui.cpp; path = ../../imgui.cpp; sourceTree = "<group>"; };
+		4080A9A820B0343C0036BA46 /* imgui.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui.h; path = ../../imgui.h; sourceTree = "<group>"; };
+		4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_draw.cpp; path = ../../imgui_draw.cpp; sourceTree = "<group>"; };
+		4080A9AC20B0343C0036BA46 /* imconfig.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imconfig.h; path = ../../imconfig.h; sourceTree = "<group>"; };
+		4080A9B220B034E40036BA46 /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = System/Library/Frameworks/Cocoa.framework; sourceTree = SDKROOT; };
+		4080A9B420B034EA0036BA46 /* OpenGL.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenGL.framework; path = System/Library/Frameworks/OpenGL.framework; sourceTree = SDKROOT; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		4080A96820B029B00036BA46 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				4080A9B520B034EA0036BA46 /* OpenGL.framework in Frameworks */,
+				4080A9B320B034E40036BA46 /* Cocoa.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		4080A96220B029B00036BA46 = {
+			isa = PBXGroup;
+			children = (
+				4080A9AC20B0343C0036BA46 /* imconfig.h */,
+				4080A9A720B0343C0036BA46 /* imgui.cpp */,
+				4080A9A820B0343C0036BA46 /* imgui.h */,
+				07A82EDA213941D00078D120 /* imgui_widgets.cpp */,
+				4080A9A620B0343C0036BA46 /* imgui_demo.cpp */,
+				4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */,
+				4080A9A520B0343C0036BA46 /* imgui_internal.h */,
+				4080A99E20B034280036BA46 /* imgui_impl_opengl2.cpp */,
+				4080A9A020B034280036BA46 /* imgui_impl_opengl2.h */,
+				4080A9A120B034280036BA46 /* imgui_impl_osx.h */,
+				4080A99F20B034280036BA46 /* imgui_impl_osx.mm */,
+				4080A98A20B02CD90036BA46 /* main.mm */,
+				4080A96C20B029B00036BA46 /* Products */,
+				4080A9B120B034E40036BA46 /* Frameworks */,
+			);
+			sourceTree = "<group>";
+		};
+		4080A96C20B029B00036BA46 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				4080A96B20B029B00036BA46 /* example_osx_opengl2 */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		4080A9B120B034E40036BA46 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				4080A9B420B034EA0036BA46 /* OpenGL.framework */,
+				4080A9B220B034E40036BA46 /* Cocoa.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		4080A96A20B029B00036BA46 /* example_osx_opengl2 */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 4080A97220B029B00036BA46 /* Build configuration list for PBXNativeTarget "example_osx_opengl2" */;
+			buildPhases = (
+				4080A96720B029B00036BA46 /* Sources */,
+				4080A96820B029B00036BA46 /* Frameworks */,
+				4080A96920B029B00036BA46 /* CopyFiles */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = example_osx_opengl2;
+			productName = example_osx_opengl2;
+			productReference = 4080A96B20B029B00036BA46 /* example_osx_opengl2 */;
+			productType = "com.apple.product-type.tool";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		4080A96320B029B00036BA46 /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 0930;
+				ORGANIZATIONNAME = ImGui;
+				TargetAttributes = {
+					4080A96A20B029B00036BA46 = {
+						CreatedOnToolsVersion = 9.3.1;
+						ProvisioningStyle = Automatic;
+					};
+				};
+			};
+			buildConfigurationList = 4080A96620B029B00036BA46 /* Build configuration list for PBXProject "example_apple_opengl2" */;
+			compatibilityVersion = "Xcode 8.0";
+			developmentRegion = en;
+			hasScannedForEncodings = 0;
+			knownRegions = (
+				en,
+			);
+			mainGroup = 4080A96220B029B00036BA46;
+			productRefGroup = 4080A96C20B029B00036BA46 /* Products */;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				4080A96A20B029B00036BA46 /* example_osx_opengl2 */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXSourcesBuildPhase section */
+		4080A96720B029B00036BA46 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				4080A99820B02D340036BA46 /* main.mm in Sources */,
+				4080A9AD20B0343C0036BA46 /* imgui_demo.cpp in Sources */,
+				4080A9AF20B0343C0036BA46 /* imgui_draw.cpp in Sources */,
+				4080A9A220B034280036BA46 /* imgui_impl_opengl2.cpp in Sources */,
+				4080A9B020B0347A0036BA46 /* imgui_impl_osx.mm in Sources */,
+				4080A9AE20B0343C0036BA46 /* imgui.cpp in Sources */,
+				07A82EDB213941D00078D120 /* imgui_widgets.cpp in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+		4080A97020B029B00036BA46 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = macosx;
+			};
+			name = Debug;
+		};
+		4080A97120B029B00036BA46 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = macosx;
+			};
+			name = Release;
+		};
+		4080A97320B029B00036BA46 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SYSTEM_HEADER_SEARCH_PATHS = ../libs/gl3w;
+				USER_HEADER_SEARCH_PATHS = ../..;
+			};
+			name = Debug;
+		};
+		4080A97420B029B00036BA46 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SYSTEM_HEADER_SEARCH_PATHS = ../libs/gl3w;
+				USER_HEADER_SEARCH_PATHS = ../..;
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		4080A96620B029B00036BA46 /* Build configuration list for PBXProject "example_apple_opengl2" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4080A97020B029B00036BA46 /* Debug */,
+				4080A97120B029B00036BA46 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		4080A97220B029B00036BA46 /* Build configuration list for PBXNativeTarget "example_osx_opengl2" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4080A97320B029B00036BA46 /* Debug */,
+				4080A97420B029B00036BA46 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 4080A96320B029B00036BA46 /* Project object */;
+}

imgui-submodule/imgui/examples/example_apple_opengl2/main.mm

@@ -0,0 +1,279 @@
+// dear imgui: standalone example application for OSX + OpenGL2, using legacy fixed pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include "imgui.h"
+#include "../imgui_impl_osx.h"
+#include "../imgui_impl_opengl2.h"
+#include <stdio.h>
+#import <Cocoa/Cocoa.h>
+#import <OpenGL/gl.h>
+#import <OpenGL/glu.h>
+
+//-----------------------------------------------------------------------------------
+// ImGuiExampleView
+//-----------------------------------------------------------------------------------
+
+@interface ImGuiExampleView : NSOpenGLView
+{
+    NSTimer*    animationTimer;
+}
+@end
+
+@implementation ImGuiExampleView
+
+-(void)animationTimerFired:(NSTimer*)timer
+{
+    [self setNeedsDisplay:YES];
+}
+
+-(void)prepareOpenGL
+{
+    [super prepareOpenGL];
+
+#ifndef DEBUG
+    GLint swapInterval = 1;
+    [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
+    if (swapInterval == 0)
+        NSLog(@"Error: Cannot set swap interval.");
+#endif
+}
+
+-(void)updateAndDrawDemoView
+{
+    // Start the Dear ImGui frame
+	ImGui_ImplOpenGL2_NewFrame();
+	ImGui_ImplOSX_NewFrame(self);
+    ImGui::NewFrame();
+
+    // Global data for the demo
+    static bool show_demo_window = true;
+    static bool show_another_window = false;
+    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+    if (show_demo_window)
+        ImGui::ShowDemoWindow(&show_demo_window);
+
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+    {
+        static float f = 0.0f;
+        static int counter = 0;
+
+        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
+
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+        ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+            counter++;
+        ImGui::SameLine();
+        ImGui::Text("counter = %d", counter);
+
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        ImGui::End();
+    }
+
+    // 3. Show another simple window.
+    if (show_another_window)
+    {
+        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+        ImGui::Text("Hello from another window!");
+        if (ImGui::Button("Close Me"))
+            show_another_window = false;
+        ImGui::End();
+    }
+
+	// Rendering
+	ImGui::Render();
+	[[self openGLContext] makeCurrentContext];
+
+    ImDrawData* draw_data = ImGui::GetDrawData();
+    GLsizei width  = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
+    GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    glViewport(0, 0, width, height);
+
+	glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+	glClear(GL_COLOR_BUFFER_BIT);
+	ImGui_ImplOpenGL2_RenderDrawData(draw_data);
+
+    // Present
+    [[self openGLContext] flushBuffer];
+
+    if (!animationTimer)
+        animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.017 target:self selector:@selector(animationTimerFired:) userInfo:nil repeats:YES];
+}
+
+-(void)reshape
+{
+    [[self openGLContext] update];
+    [self updateAndDrawDemoView];
+}
+
+-(void)drawRect:(NSRect)bounds
+{
+    [self updateAndDrawDemoView];
+}
+
+-(BOOL)acceptsFirstResponder
+{
+    return (YES);
+}
+
+-(BOOL)becomeFirstResponder
+{
+    return (YES);
+}
+
+-(BOOL)resignFirstResponder
+{
+    return (YES);
+}
+
+-(void)dealloc
+{
+    animationTimer = nil;
+}
+
+// Forward Mouse/Keyboard events to dear imgui OSX back-end. It returns true when imgui is expecting to use the event.
+-(void)keyUp:(NSEvent *)event           { ImGui_ImplOSX_HandleEvent(event, self); }
+-(void)keyDown:(NSEvent *)event         { ImGui_ImplOSX_HandleEvent(event, self); }
+-(void)flagsChanged:(NSEvent *)event    { ImGui_ImplOSX_HandleEvent(event, self); }
+-(void)mouseDown:(NSEvent *)event       { ImGui_ImplOSX_HandleEvent(event, self); }
+-(void)mouseUp:(NSEvent *)event         { ImGui_ImplOSX_HandleEvent(event, self); }
+-(void)mouseMoved:(NSEvent *)event      { ImGui_ImplOSX_HandleEvent(event, self); }
+-(void)mouseDragged:(NSEvent *)event    { ImGui_ImplOSX_HandleEvent(event, self); }
+-(void)scrollWheel:(NSEvent *)event     { ImGui_ImplOSX_HandleEvent(event, self); }
+
+@end
+
+//-----------------------------------------------------------------------------------
+// ImGuiExampleAppDelegate
+//-----------------------------------------------------------------------------------
+
+@interface ImGuiExampleAppDelegate : NSObject <NSApplicationDelegate>
+@property (nonatomic, readonly) NSWindow* window;
+@end
+
+@implementation ImGuiExampleAppDelegate
+@synthesize window = _window;
+
+-(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication
+{
+    return YES;
+}
+
+-(NSWindow*)window
+{
+    if (_window != nil)
+        return (_window);
+
+    NSRect viewRect = NSMakeRect(100.0, 100.0, 100.0 + 1280.0, 100 + 720.0);
+
+    _window = [[NSWindow alloc] initWithContentRect:viewRect styleMask:NSWindowStyleMaskTitled|NSWindowStyleMaskMiniaturizable|NSWindowStyleMaskResizable|NSWindowStyleMaskClosable backing:NSBackingStoreBuffered defer:YES];
+    [_window setTitle:@"Dear ImGui OSX+OpenGL2 Example"];
+    [_window setAcceptsMouseMovedEvents:YES];
+    [_window setOpaque:YES];
+    [_window makeKeyAndOrderFront:NSApp];
+
+    return (_window);
+}
+
+-(void)setupMenu
+{
+	NSMenu* mainMenuBar = [[NSMenu alloc] init];
+    NSMenu* appMenu;
+    NSMenuItem* menuItem;
+
+    appMenu = [[NSMenu alloc] initWithTitle:@"Dear ImGui OSX+OpenGL2 Example"];
+    menuItem = [appMenu addItemWithTitle:@"Quit Dear ImGui OSX+OpenGL2 Example" action:@selector(terminate:) keyEquivalent:@"q"];
+    [menuItem setKeyEquivalentModifierMask:NSEventModifierFlagCommand];
+
+    menuItem = [[NSMenuItem alloc] init];
+    [menuItem setSubmenu:appMenu];
+
+    [mainMenuBar addItem:menuItem];
+
+    appMenu = nil;
+    [NSApp setMainMenu:mainMenuBar];
+}
+
+-(void)dealloc
+{
+    _window = nil;
+}
+
+-(void)applicationDidFinishLaunching:(NSNotification *)aNotification
+{
+	// Make the application a foreground application (else it won't receive keyboard events)
+	ProcessSerialNumber psn = {0, kCurrentProcess};
+	TransformProcessType(&psn, kProcessTransformToForegroundApplication);
+
+	// Menu
+    [self setupMenu];
+
+    NSOpenGLPixelFormatAttribute attrs[] =
+    {
+        NSOpenGLPFADoubleBuffer,
+        NSOpenGLPFADepthSize, 32,
+        0
+    };
+
+    NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];
+    ImGuiExampleView* view = [[ImGuiExampleView alloc] initWithFrame:self.window.frame pixelFormat:format];
+    format = nil;
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
+    if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6)
+        [view setWantsBestResolutionOpenGLSurface:YES];
+#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
+    [self.window setContentView:view];
+
+    if ([view openGLContext] == nil)
+        NSLog(@"No OpenGL Context!");
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplOSX_Init();
+    ImGui_ImplOpenGL2_Init();
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+}
+
+@end
+
+int main(int argc, const char* argv[])
+{
+	@autoreleasepool
+	{
+		NSApp = [NSApplication sharedApplication];
+		ImGuiExampleAppDelegate* delegate = [[ImGuiExampleAppDelegate alloc] init];
+		[[NSApplication sharedApplication] setDelegate:delegate];
+		[NSApp run];
+	}
+	return NSApplicationMain(argc, argv);
+}

imgui-submodule/imgui/examples/example_emscripten/README.md

@@ -0,0 +1,12 @@
+
+# How to Build
+
+- You need to install Emscripten from https://emscripten.org/docs/getting_started/downloads.html, and have the environment variables set, as described in https://emscripten.org/docs/getting_started/downloads.html#installation-instructions
+
+- Depending on your configuration, in Windows you may need to run `emsdk/emsdk_env.bat` in your console to access the Emscripten command-line tools.
+
+- Then build using `make` while in the `example_emscripten/` directory.
+
+- Note that Emscripten 1.39.0 (October 2019) obsoleted the `BINARYEN_TRAP_MODE=clamp` compilation flag which was required with version older than 1.39.0 to avoid rendering artefacts. See [#2877](https://github.com/ocornut/imgui/issues/2877) for details. If you use an older version, uncomment this line in the Makefile:
+
+`#EMS += -s BINARYEN_TRAP_MODE=clamp`

imgui-submodule/imgui/examples/example_emscripten/main.cpp

@@ -0,0 +1,173 @@
+// dear imgui: standalone example application for Emscripten, using SDL2 + OpenGL3
+// This is mostly the same code as the SDL2 + OpenGL3 example, simply with the modifications needed to run on Emscripten.
+// It is possible to combine both code into a single source file that will compile properly on Desktop and using Emscripten.
+// See https://github.com/ocornut/imgui/pull/2492 as an example on how to do just that.
+//
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (Emscripten is a C++-to-javascript compiler, used to publish executables for the web. See https://emscripten.org/)
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_opengl3.h"
+#include <stdio.h>
+#include <emscripten.h>
+#include <SDL.h>
+#include <SDL_opengles2.h>
+
+// Emscripten requires to have full control over the main loop. We're going to store our SDL book-keeping variables globally.
+// Having a single function that acts as a loop prevents us to store state in the stack of said function. So we need some location for this.
+SDL_Window*     g_Window = NULL;
+SDL_GLContext   g_GLContext = NULL;
+
+// For clarity, our main loop code is declared at the end.
+void main_loop(void*);
+
+int main(int, char**)
+{
+    // Setup SDL
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // For the browser using Emscripten, we are going to use WebGL1 with GL ES2. See the Makefile. for requirement details.
+    // It is very likely the generated file won't work in many browsers. Firefox is the only sure bet, but I have successfully
+    // run this code on Chrome for Android for example.
+    const char* glsl_version = "#version 100";
+    //const char* glsl_version = "#version 300 es";
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
+
+    // Create window with graphics context
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
+    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
+    SDL_DisplayMode current;
+    SDL_GetCurrentDisplayMode(0, &current);
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    g_Window = SDL_CreateWindow("Dear ImGui Emscripten example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+    g_GLContext = SDL_GL_CreateContext(g_Window);
+    if (!g_GLContext)
+    {
+        fprintf(stderr, "Failed to initialize WebGL context!\n");
+        return 1;
+    }
+    SDL_GL_SetSwapInterval(1); // Enable vsync
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
+    // You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
+    io.IniFilename = NULL;
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForOpenGL(g_Window, g_GLContext);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    // - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
+    //io.Fonts->AddFontDefault();
+#ifndef IMGUI_DISABLE_FILE_FUNCTIONS
+    io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+#endif
+
+    // This function call won't return, and will engage in an infinite loop, processing events from the browser, and dispatching them.
+    emscripten_set_main_loop_arg(main_loop, NULL, 0, true);
+}
+
+void main_loop(void* arg)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IM_UNUSED(arg); // We can pass this argument as the second parameter of emscripten_set_main_loop_arg(), but we don't use that.
+
+    // Our state (make them static = more or less global) as a convenience to keep the example terse.
+    static bool show_demo_window = true;
+    static bool show_another_window = false;
+    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Poll and handle events (inputs, window resize, etc.)
+    // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+    // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+    // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+    // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+    SDL_Event event;
+    while (SDL_PollEvent(&event))
+    {
+        ImGui_ImplSDL2_ProcessEvent(&event);
+        // Capture events here, based on io.WantCaptureMouse and io.WantCaptureKeyboard
+    }
+
+    // Start the Dear ImGui frame
+    ImGui_ImplOpenGL3_NewFrame();
+    ImGui_ImplSDL2_NewFrame(g_Window);
+    ImGui::NewFrame();
+
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+    if (show_demo_window)
+        ImGui::ShowDemoWindow(&show_demo_window);
+
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+    {
+        static float f = 0.0f;
+        static int counter = 0;
+
+        ImGui::Begin("Hello, world!");                                // Create a window called "Hello, world!" and append into it.
+
+        ImGui::Text("This is some useful text.");                     // Display some text (you can use a format strings too)
+        ImGui::Checkbox("Demo Window", &show_demo_window);            // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
+
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);                  // Edit 1 float using a slider from 0.0f to 1.0f
+        ImGui::ColorEdit3("clear color", (float*)&clear_color);       // Edit 3 floats representing a color
+
+        if (ImGui::Button("Button"))                                  // Buttons return true when clicked (most widgets return true when edited/activated)
+            counter++;
+        ImGui::SameLine();
+        ImGui::Text("counter = %d", counter);
+
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        ImGui::End();
+    }
+
+    // 3. Show another simple window.
+    if (show_another_window)
+    {
+        ImGui::Begin("Another Window", &show_another_window);         // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+        ImGui::Text("Hello from another window!");
+        if (ImGui::Button("Close Me"))
+            show_another_window = false;
+        ImGui::End();
+    }
+
+    // Rendering
+    ImGui::Render();
+    SDL_GL_MakeCurrent(g_Window, g_GLContext);
+    glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+    glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+    glClear(GL_COLOR_BUFFER_BIT);
+    ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+    SDL_GL_SwapWindow(g_Window);
+}

imgui-submodule/imgui/examples/example_emscripten/shell_minimal.html

@@ -0,0 +1,64 @@
+<!doctype html>
+<html lang="en-us">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
+    <title>Dear ImGui Emscripten example</title>
+    <style>
+        body { margin: 0; background-color: black }
+        .emscripten {
+            position: absolute;
+            top: 0px;
+            left: 0px;
+            margin: 0px;
+            border: 0;
+            width: 100%;
+            height: 100%;
+            overflow: hidden;
+            display: block;
+            image-rendering: optimizeSpeed;
+            image-rendering: -moz-crisp-edges;
+            image-rendering: -o-crisp-edges;
+            image-rendering: -webkit-optimize-contrast;
+            image-rendering: optimize-contrast;
+            image-rendering: crisp-edges;
+            image-rendering: pixelated;
+            -ms-interpolation-mode: nearest-neighbor;
+        }
+    </style>
+  </head>
+  <body>
+    <canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()"></canvas>
+    <script type='text/javascript'>
+      var Module = {
+        preRun: [],
+        postRun: [],
+        print: (function() {
+            return function(text) {
+                text = Array.prototype.slice.call(arguments).join(' ');
+                console.log(text);
+            };
+        })(),
+        printErr: function(text) {
+            text = Array.prototype.slice.call(arguments).join(' ');
+            console.error(text);
+        },
+        canvas: (function() {
+            var canvas = document.getElementById('canvas');
+            //canvas.addEventListener("webglcontextlost", function(e) { alert('FIXME: WebGL context lost, please reload the page'); e.preventDefault(); }, false);
+            return canvas;
+        })(),
+        setStatus: function(text) {
+            console.log("status: " + text);
+        },
+        monitorRunDependencies: function(left) {
+            // no run dependencies to log
+        }
+      };
+      window.onerror = function() {
+        console.log("onerror: " + event);
+      };
+    </script>
+    {{{ SCRIPT }}}
+  </body>
+</html>

imgui-submodule/imgui/examples/example_glfw_metal/main.mm

@@ -0,0 +1,170 @@
+// dear imgui: standalone example application for GLFW + Metal, using programmable pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_metal.h"
+#include <stdio.h>
+
+#define GLFW_INCLUDE_NONE
+#define GLFW_EXPOSE_NATIVE_COCOA
+#include <GLFW/glfw3.h>
+#include <GLFW/glfw3native.h>
+
+#import <Metal/Metal.h>
+#import <QuartzCore/QuartzCore.h>
+
+static void glfw_error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
+}
+
+int main(int, char**)
+{
+    // Setup Dear ImGui binding
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
+
+    // Setup style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Setup window
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit())
+        return 1;
+
+    // Create window with graphics context
+    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+Metal example", NULL, NULL);
+    if (window == NULL)
+        return 1;
+
+    id <MTLDevice> device = MTLCreateSystemDefaultDevice();;
+    id <MTLCommandQueue> commandQueue = [device newCommandQueue];
+
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplMetal_Init(device);
+
+    NSWindow *nswin = glfwGetCocoaWindow(window);
+    CAMetalLayer *layer = [CAMetalLayer layer];
+    layer.device = device;
+    layer.pixelFormat = MTLPixelFormatBGRA8Unorm;
+    nswin.contentView.layer = layer;
+    nswin.contentView.wantsLayer = YES;
+
+    MTLRenderPassDescriptor *renderPassDescriptor = [MTLRenderPassDescriptor new];
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    float clear_color[4] = {0.45f, 0.55f, 0.60f, 1.00f};
+
+    // Main loop
+    while (!glfwWindowShouldClose(window))
+    {
+        @autoreleasepool
+        {
+            // Poll and handle events (inputs, window resize, etc.)
+            // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+            // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+            // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+            // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+            glfwPollEvents();
+
+            int width, height;
+            glfwGetFramebufferSize(window, &width, &height);
+            layer.drawableSize = CGSizeMake(width, height);
+            id<CAMetalDrawable> drawable = [layer nextDrawable];
+
+            id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
+            renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
+            renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
+            renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
+            renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
+            id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
+            [renderEncoder pushDebugGroup:@"ImGui demo"];
+
+            // Start the Dear ImGui frame
+            ImGui_ImplMetal_NewFrame(renderPassDescriptor);
+            ImGui_ImplGlfw_NewFrame();
+            ImGui::NewFrame();
+
+            // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+            if (show_demo_window)
+                ImGui::ShowDemoWindow(&show_demo_window);
+
+            // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+            {
+                static float f = 0.0f;
+                static int counter = 0;
+
+                ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+                ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+                ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+                ImGui::Checkbox("Another Window", &show_another_window);
+
+                ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+                ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+                if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                    counter++;
+                ImGui::SameLine();
+                ImGui::Text("counter = %d", counter);
+
+                ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+                ImGui::End();
+            }
+
+            // 3. Show another simple window.
+            if (show_another_window)
+            {
+                ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+                ImGui::Text("Hello from another window!");
+                if (ImGui::Button("Close Me"))
+                    show_another_window = false;
+                ImGui::End();
+            }
+
+            // Rendering
+            ImGui::Render();
+            ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
+
+            [renderEncoder popDebugGroup];
+            [renderEncoder endEncoding];
+
+            [commandBuffer presentDrawable:drawable];
+            [commandBuffer commit];
+        }
+    }
+
+    // Cleanup
+    ImGui_ImplMetal_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_glfw_opengl2/build_win32.bat

@@ -0,0 +1,3 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include *.cpp ..\imgui_impl_opengl2.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeDebug/example_glfw_opengl2.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib

imgui-submodule/imgui/examples/example_glfw_opengl2/main.cpp

@@ -0,0 +1,158 @@
+// dear imgui: standalone example application for GLFW + OpenGL2, using legacy fixed pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
+
+// **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
+// **Prefer using the code in the example_glfw_opengl2/ folder**
+// See imgui_impl_glfw.cpp for details.
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_opengl2.h"
+#include <stdio.h>
+#ifdef __APPLE__
+#define GL_SILENCE_DEPRECATION
+#endif
+#include <GLFW/glfw3.h>
+
+// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
+// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
+// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
+#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
+#pragma comment(lib, "legacy_stdio_definitions")
+#endif
+
+static void glfw_error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
+}
+
+int main(int, char**)
+{
+    // Setup window
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit())
+        return 1;
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+OpenGL2 example", NULL, NULL);
+    if (window == NULL)
+        return 1;
+    glfwMakeContextCurrent(window);
+    glfwSwapInterval(1); // Enable vsync
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplOpenGL2_Init();
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    while (!glfwWindowShouldClose(window))
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        glfwPollEvents();
+
+        // Start the Dear ImGui frame
+        ImGui_ImplOpenGL2_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        int display_w, display_h;
+        glfwGetFramebufferSize(window, &display_w, &display_h);
+        glViewport(0, 0, display_w, display_h);
+        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
+        // you may need to backup/reset/restore current shader using the commented lines below.
+        //GLint last_program;
+        //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+        //glUseProgram(0);
+        ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
+        //glUseProgram(last_program);
+
+        glfwMakeContextCurrent(window);
+        glfwSwapBuffers(window);
+    }
+
+    // Cleanup
+    ImGui_ImplOpenGL2_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_glfw_opengl3/build_win32.bat

@@ -0,0 +1,3 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include /I ..\libs\gl3w *.cpp ..\imgui_impl_glfw.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_glfw_opengl3.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib

imgui-submodule/imgui/examples/example_glfw_opengl3/main.cpp

@@ -0,0 +1,202 @@
+// dear imgui: standalone example application for GLFW + OpenGL 3, using programmable pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_opengl3.h"
+#include <stdio.h>
+
+// About Desktop OpenGL function loaders:
+//  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
+//  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
+//  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
+#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
+#include <GL/gl3w.h>    // Initialize with gl3wInit()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
+#include <GL/glew.h>    // Initialize with glewInit()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+#include <glad/glad.h>  // Initialize with gladLoadGL()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+#define GLFW_INCLUDE_NONE         // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
+#include <glbinding/glbinding.h>  // Initialize with glbinding::initialize()
+#include <glbinding/gl/gl.h>
+using namespace gl;
+#else
+#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
+#endif
+
+// Include glfw3.h after our OpenGL definitions
+#include <GLFW/glfw3.h>
+
+// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
+// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
+// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
+#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
+#pragma comment(lib, "legacy_stdio_definitions")
+#endif
+
+static void glfw_error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
+}
+
+int main(int, char**)
+{
+    // Setup window
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit())
+        return 1;
+
+    // Decide GL+GLSL versions
+#if __APPLE__
+    // GL 3.2 + GLSL 150
+    const char* glsl_version = "#version 150";
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
+    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // Required on Mac
+#else
+    // GL 3.0 + GLSL 130
+    const char* glsl_version = "#version 130";
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+    //glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
+    //glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // 3.0+ only
+#endif
+
+    // Create window with graphics context
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+OpenGL3 example", NULL, NULL);
+    if (window == NULL)
+        return 1;
+    glfwMakeContextCurrent(window);
+    glfwSwapInterval(1); // Enable vsync
+
+    // Initialize OpenGL loader
+#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
+    bool err = gl3wInit() != 0;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
+    bool err = glewInit() != GLEW_OK;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+    bool err = gladLoadGL() == 0;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+    bool err = false;
+    glbinding::initialize([](const char* name) { return (glbinding::ProcAddress)glfwGetProcAddress(name); });
+#else
+    bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
+#endif
+    if (err)
+    {
+        fprintf(stderr, "Failed to initialize OpenGL loader!\n");
+        return 1;
+    }
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    while (!glfwWindowShouldClose(window))
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        glfwPollEvents();
+
+        // Start the Dear ImGui frame
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        int display_w, display_h;
+        glfwGetFramebufferSize(window, &display_w, &display_h);
+        glViewport(0, 0, display_w, display_h);
+        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+
+        glfwSwapBuffers(window);
+    }
+
+    // Cleanup
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_glfw_vulkan/CMakeLists.txt

@@ -0,0 +1,41 @@
+# Example usage:
+#  mkdir build
+#  cd build
+#  cmake -g "Visual Studio 14 2015" ..
+
+cmake_minimum_required(VERSION 2.8)
+project(imgui_example_glfw_vulkan C CXX)
+
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
+endif()
+
+set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DVK_PROTOTYPES")
+set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVK_PROTOTYPES")
+
+# GLFW
+set(GLFW_DIR ../../../glfw) # Set this to point to an up-to-date GLFW repo
+option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" OFF)
+option(GLFW_BUILD_TESTS "Build the GLFW test programs" OFF)
+option(GLFW_BUILD_DOCS "Build the GLFW documentation" OFF)
+option(GLFW_INSTALL "Generate installation target" OFF)
+option(GLFW_DOCUMENT_INTERNALS "Include internals in documentation" OFF)
+add_subdirectory(${GLFW_DIR} binary_dir EXCLUDE_FROM_ALL)
+include_directories(${GLFW_DIR}/include)
+
+# Dear ImGui
+set(IMGUI_DIR ../../)
+include_directories(${IMGUI_DIR} ..)
+
+# Libraries
+find_library(VULKAN_LIBRARY
+  NAMES vulkan vulkan-1)
+set(LIBRARIES "glfw;${VULKAN_LIBRARY}")
+
+# Use vulkan headers from glfw:
+include_directories(${GLFW_DIR}/deps)
+
+file(GLOB sources *.cpp)
+
+add_executable(example_glfw_vulkan ${sources} ${IMGUI_DIR}/examples/imgui_impl_glfw.cpp ${IMGUI_DIR}/examples/imgui_impl_vulkan.cpp ${IMGUI_DIR}/imgui.cpp ${IMGUI_DIR}/imgui_draw.cpp ${IMGUI_DIR}/imgui_demo.cpp ${IMGUI_DIR}/imgui_widgets.cpp)
+target_link_libraries(example_glfw_vulkan ${LIBRARIES})

imgui-submodule/imgui/examples/example_glfw_vulkan/build_win32.bat

@@ -0,0 +1,7 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeDebug/example_glfw_vulkan.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 /libpath:%VULKAN_SDK%\lib32 glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
+
+mkdir Release
+cl /nologo /Zi /MD /Ox /Oi /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeRelease/example_glfw_vulkan.exe /FoRelease/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 /libpath:%VULKAN_SDK%\lib32 glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib

imgui-submodule/imgui/examples/example_glfw_vulkan/build_win64.bat

@@ -0,0 +1,7 @@
+@REM Build for Visual Studio compiler. Run your copy of amd64/vcvars32.bat to setup 64-bit command-line compiler.
+
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeDebug/example_glfw_vulkan.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-64 /libpath:%VULKAN_SDK%\lib glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
+
+mkdir Release
+cl /nologo /Zi /MD /Ox /Oi /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeRelease/example_glfw_vulkan.exe /FoRelease/ /link /LIBPATH:..\libs\glfw\lib-vc2010-64 /libpath:%VULKAN_SDK%\lib glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib

imgui-submodule/imgui/examples/example_glfw_vulkan/gen_spv.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+glslangValidator -V -x -o glsl_shader.frag.u32 glsl_shader.frag
+glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert

imgui-submodule/imgui/examples/example_glfw_vulkan/glsl_shader.frag

@@ -0,0 +1,14 @@
+#version 450 core
+layout(location = 0) out vec4 fColor;
+
+layout(set=0, binding=0) uniform sampler2D sTexture;
+
+layout(location = 0) in struct {
+    vec4 Color;
+    vec2 UV;
+} In;
+
+void main()
+{
+    fColor = In.Color * texture(sTexture, In.UV.st);
+}

imgui-submodule/imgui/examples/example_glfw_vulkan/glsl_shader.vert

@@ -0,0 +1,25 @@
+#version 450 core
+layout(location = 0) in vec2 aPos;
+layout(location = 1) in vec2 aUV;
+layout(location = 2) in vec4 aColor;
+
+layout(push_constant) uniform uPushConstant {
+    vec2 uScale;
+    vec2 uTranslate;
+} pc;
+
+out gl_PerVertex {
+    vec4 gl_Position;
+};
+
+layout(location = 0) out struct {
+    vec4 Color;
+    vec2 UV;
+} Out;
+
+void main()
+{
+    Out.Color = aColor;
+    Out.UV = aUV;
+    gl_Position = vec4(aPos * pc.uScale + pc.uTranslate, 0, 1);
+}

imgui-submodule/imgui/examples/example_glfw_vulkan/main.cpp

@@ -0,0 +1,530 @@
+// dear imgui: standalone example application for Glfw + Vulkan
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
+// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
+//   You will use those if you want to use this rendering back-end in your engine/app.
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
+//   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
+// Read comments in imgui_impl_vulkan.h.
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_vulkan.h"
+#include <stdio.h>          // printf, fprintf
+#include <stdlib.h>         // abort
+#define GLFW_INCLUDE_NONE
+#define GLFW_INCLUDE_VULKAN
+#include <GLFW/glfw3.h>
+#include <vulkan/vulkan.h>
+
+// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
+// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
+// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
+#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
+#pragma comment(lib, "legacy_stdio_definitions")
+#endif
+
+//#define IMGUI_UNLIMITED_FRAME_RATE
+#ifdef _DEBUG
+#define IMGUI_VULKAN_DEBUG_REPORT
+#endif
+
+static VkAllocationCallbacks*   g_Allocator = NULL;
+static VkInstance               g_Instance = VK_NULL_HANDLE;
+static VkPhysicalDevice         g_PhysicalDevice = VK_NULL_HANDLE;
+static VkDevice                 g_Device = VK_NULL_HANDLE;
+static uint32_t                 g_QueueFamily = (uint32_t)-1;
+static VkQueue                  g_Queue = VK_NULL_HANDLE;
+static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
+static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
+
+static ImGui_ImplVulkanH_Window g_MainWindowData;
+static int                      g_MinImageCount = 2;
+static bool                     g_SwapChainRebuild = false;
+static int                      g_SwapChainResizeWidth = 0;
+static int                      g_SwapChainResizeHeight = 0;
+
+static void check_vk_result(VkResult err)
+{
+    if (err == 0) return;
+    printf("VkResult %d\n", err);
+    if (err < 0)
+        abort();
+}
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
+{
+    (void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
+    fprintf(stderr, "[vulkan] ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
+    return VK_FALSE;
+}
+#endif // IMGUI_VULKAN_DEBUG_REPORT
+
+static void SetupVulkan(const char** extensions, uint32_t extensions_count)
+{
+    VkResult err;
+
+    // Create Vulkan Instance
+    {
+        VkInstanceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+        create_info.enabledExtensionCount = extensions_count;
+        create_info.ppEnabledExtensionNames = extensions;
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+        // Enabling multiple validation layers grouped as LunarG standard validation
+        const char* layers[] = { "VK_LAYER_LUNARG_standard_validation" };
+        create_info.enabledLayerCount = 1;
+        create_info.ppEnabledLayerNames = layers;
+
+        // Enable debug report extension (we need additional storage, so we duplicate the user array to add our new extension to it)
+        const char** extensions_ext = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
+        memcpy(extensions_ext, extensions, extensions_count * sizeof(const char*));
+        extensions_ext[extensions_count] = "VK_EXT_debug_report";
+        create_info.enabledExtensionCount = extensions_count + 1;
+        create_info.ppEnabledExtensionNames = extensions_ext;
+
+        // Create Vulkan Instance
+        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+        check_vk_result(err);
+        free(extensions_ext);
+
+        // Get the function pointer (required for any extensions)
+        auto vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
+        IM_ASSERT(vkCreateDebugReportCallbackEXT != NULL);
+
+        // Setup the debug report callback
+        VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
+        debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
+        debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
+        debug_report_ci.pfnCallback = debug_report;
+        debug_report_ci.pUserData = NULL;
+        err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
+        check_vk_result(err);
+#else
+        // Create Vulkan Instance without any debug feature
+        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+        check_vk_result(err);
+        IM_UNUSED(g_DebugReport);
+#endif
+    }
+
+    // Select GPU
+    {
+        uint32_t gpu_count;
+        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
+        check_vk_result(err);
+        IM_ASSERT(gpu_count > 0);
+
+        VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
+        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
+        check_vk_result(err);
+
+        // If a number >1 of GPUs got reported, you should find the best fit GPU for your purpose
+        // e.g. VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU if available, or with the greatest memory available, etc.
+        // for sake of simplicity we'll just take the first one, assuming it has a graphics queue family.
+        g_PhysicalDevice = gpus[0];
+        free(gpus);
+    }
+
+    // Select graphics queue family
+    {
+        uint32_t count;
+        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, NULL);
+        VkQueueFamilyProperties* queues = (VkQueueFamilyProperties*)malloc(sizeof(VkQueueFamilyProperties) * count);
+        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, queues);
+        for (uint32_t i = 0; i < count; i++)
+            if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
+            {
+                g_QueueFamily = i;
+                break;
+            }
+        free(queues);
+        IM_ASSERT(g_QueueFamily != (uint32_t)-1);
+    }
+
+    // Create Logical Device (with 1 queue)
+    {
+        int device_extension_count = 1;
+        const char* device_extensions[] = { "VK_KHR_swapchain" };
+        const float queue_priority[] = { 1.0f };
+        VkDeviceQueueCreateInfo queue_info[1] = {};
+        queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+        queue_info[0].queueFamilyIndex = g_QueueFamily;
+        queue_info[0].queueCount = 1;
+        queue_info[0].pQueuePriorities = queue_priority;
+        VkDeviceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+        create_info.queueCreateInfoCount = sizeof(queue_info) / sizeof(queue_info[0]);
+        create_info.pQueueCreateInfos = queue_info;
+        create_info.enabledExtensionCount = device_extension_count;
+        create_info.ppEnabledExtensionNames = device_extensions;
+        err = vkCreateDevice(g_PhysicalDevice, &create_info, g_Allocator, &g_Device);
+        check_vk_result(err);
+        vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
+    }
+
+    // Create Descriptor Pool
+    {
+        VkDescriptorPoolSize pool_sizes[] =
+        {
+            { VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
+            { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
+            { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
+            { VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
+        };
+        VkDescriptorPoolCreateInfo pool_info = {};
+        pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+        pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+        pool_info.maxSets = 1000 * IM_ARRAYSIZE(pool_sizes);
+        pool_info.poolSizeCount = (uint32_t)IM_ARRAYSIZE(pool_sizes);
+        pool_info.pPoolSizes = pool_sizes;
+        err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
+        check_vk_result(err);
+    }
+}
+
+// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
+// Your real engine/app may not use them.
+static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
+{
+    wd->Surface = surface;
+
+    // Check for WSI support
+    VkBool32 res;
+    vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
+    if (res != VK_TRUE)
+    {
+        fprintf(stderr, "Error no WSI support on physical device 0\n");
+        exit(-1);
+    }
+
+    // Select Surface Format
+    const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
+    const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
+    wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
+
+    // Select Present Mode
+#ifdef IMGUI_UNLIMITED_FRAME_RATE
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
+#else
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
+#endif
+    wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
+    //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
+
+    // Create SwapChain, RenderPass, Framebuffer, etc.
+    IM_ASSERT(g_MinImageCount >= 2);
+    ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
+}
+
+static void CleanupVulkan()
+{
+    vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+    // Remove the debug report callback
+    auto vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
+    vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
+#endif // IMGUI_VULKAN_DEBUG_REPORT
+
+    vkDestroyDevice(g_Device, g_Allocator);
+    vkDestroyInstance(g_Instance, g_Allocator);
+}
+
+static void CleanupVulkanWindow()
+{
+    ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, &g_MainWindowData, g_Allocator);
+}
+
+static void FrameRender(ImGui_ImplVulkanH_Window* wd)
+{
+    VkResult err;
+
+    VkSemaphore image_acquired_semaphore  = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
+    check_vk_result(err);
+
+    ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
+    {
+        err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);    // wait indefinitely instead of periodically checking
+        check_vk_result(err);
+
+        err = vkResetFences(g_Device, 1, &fd->Fence);
+        check_vk_result(err);
+    }
+    {
+        err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
+        check_vk_result(err);
+        VkCommandBufferBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
+        check_vk_result(err);
+    }
+    {
+        VkRenderPassBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+        info.renderPass = wd->RenderPass;
+        info.framebuffer = fd->Framebuffer;
+        info.renderArea.extent.width = wd->Width;
+        info.renderArea.extent.height = wd->Height;
+        info.clearValueCount = 1;
+        info.pClearValues = &wd->ClearValue;
+        vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
+    }
+
+    // Record Imgui Draw Data and draw funcs into command buffer
+    ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
+
+    // Submit command buffer
+    vkCmdEndRenderPass(fd->CommandBuffer);
+    {
+        VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+        VkSubmitInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        info.waitSemaphoreCount = 1;
+        info.pWaitSemaphores = &image_acquired_semaphore;
+        info.pWaitDstStageMask = &wait_stage;
+        info.commandBufferCount = 1;
+        info.pCommandBuffers = &fd->CommandBuffer;
+        info.signalSemaphoreCount = 1;
+        info.pSignalSemaphores = &render_complete_semaphore;
+
+        err = vkEndCommandBuffer(fd->CommandBuffer);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
+        check_vk_result(err);
+    }
+}
+
+static void FramePresent(ImGui_ImplVulkanH_Window* wd)
+{
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    VkPresentInfoKHR info = {};
+    info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+    info.waitSemaphoreCount = 1;
+    info.pWaitSemaphores = &render_complete_semaphore;
+    info.swapchainCount = 1;
+    info.pSwapchains = &wd->Swapchain;
+    info.pImageIndices = &wd->FrameIndex;
+    VkResult err = vkQueuePresentKHR(g_Queue, &info);
+    check_vk_result(err);
+    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
+}
+
+static void glfw_error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
+}
+
+static void glfw_resize_callback(GLFWwindow*, int w, int h)
+{
+    g_SwapChainRebuild = true;
+    g_SwapChainResizeWidth = w;
+    g_SwapChainResizeHeight = h;
+}
+
+int main(int, char**)
+{
+    // Setup GLFW window
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit())
+        return 1;
+
+    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+Vulkan example", NULL, NULL);
+
+    // Setup Vulkan
+    if (!glfwVulkanSupported())
+    {
+        printf("GLFW: Vulkan Not Supported\n");
+        return 1;
+    }
+    uint32_t extensions_count = 0;
+    const char** extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
+    SetupVulkan(extensions, extensions_count);
+
+    // Create Window Surface
+    VkSurfaceKHR surface;
+    VkResult err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &surface);
+    check_vk_result(err);
+
+    // Create Framebuffers
+    int w, h;
+    glfwGetFramebufferSize(window, &w, &h);
+    glfwSetFramebufferSizeCallback(window, glfw_resize_callback);
+    ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
+    SetupVulkanWindow(wd, surface, w, h);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGlfw_InitForVulkan(window, true);
+    ImGui_ImplVulkan_InitInfo init_info = {};
+    init_info.Instance = g_Instance;
+    init_info.PhysicalDevice = g_PhysicalDevice;
+    init_info.Device = g_Device;
+    init_info.QueueFamily = g_QueueFamily;
+    init_info.Queue = g_Queue;
+    init_info.PipelineCache = g_PipelineCache;
+    init_info.DescriptorPool = g_DescriptorPool;
+    init_info.Allocator = g_Allocator;
+    init_info.MinImageCount = g_MinImageCount;
+    init_info.ImageCount = wd->ImageCount;
+    init_info.CheckVkResultFn = check_vk_result;
+    ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Upload Fonts
+    {
+        // Use any command queue
+        VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
+        VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
+
+        err = vkResetCommandPool(g_Device, command_pool, 0);
+        check_vk_result(err);
+        VkCommandBufferBeginInfo begin_info = {};
+        begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        err = vkBeginCommandBuffer(command_buffer, &begin_info);
+        check_vk_result(err);
+
+        ImGui_ImplVulkan_CreateFontsTexture(command_buffer);
+
+        VkSubmitInfo end_info = {};
+        end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        end_info.commandBufferCount = 1;
+        end_info.pCommandBuffers = &command_buffer;
+        err = vkEndCommandBuffer(command_buffer);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
+        check_vk_result(err);
+
+        err = vkDeviceWaitIdle(g_Device);
+        check_vk_result(err);
+        ImGui_ImplVulkan_DestroyFontUploadObjects();
+    }
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    while (!glfwWindowShouldClose(window))
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        glfwPollEvents();
+
+        if (g_SwapChainRebuild)
+        {
+            g_SwapChainRebuild = false;
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, g_SwapChainResizeWidth, g_SwapChainResizeHeight, g_MinImageCount);
+            g_MainWindowData.FrameIndex = 0;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplVulkan_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
+        FrameRender(wd);
+
+        FramePresent(wd);
+    }
+
+    // Cleanup
+    err = vkDeviceWaitIdle(g_Device);
+    check_vk_result(err);
+    ImGui_ImplVulkan_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupVulkanWindow();
+    CleanupVulkan();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_glut_opengl2/main.cpp

@@ -0,0 +1,146 @@
+// dear imgui: standalone example application for GLUT/FreeGLUT + OpenGL2, using legacy fixed pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+// !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
+// !!! If someone or something is teaching you GLUT in 2020, you are being abused. Please show some resistance. !!!
+// !!! Nowadays, prefer using GLFW or SDL instead!
+
+#include "imgui.h"
+#include "imgui_impl_glut.h"
+#include "imgui_impl_opengl2.h"
+#ifdef __APPLE__
+    #include <GLUT/glut.h>
+#else
+    #include <GL/freeglut.h>
+#endif
+
+#ifdef _MSC_VER
+#pragma warning (disable: 4505) // unreferenced local function has been removed
+#endif
+
+// Our state
+static bool show_demo_window = true;
+static bool show_another_window = false;
+static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+void my_display_code()
+{
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+    if (show_demo_window)
+        ImGui::ShowDemoWindow(&show_demo_window);
+
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+    {
+        static float f = 0.0f;
+        static int counter = 0;
+
+        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
+
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+        ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+            counter++;
+        ImGui::SameLine();
+        ImGui::Text("counter = %d", counter);
+
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        ImGui::End();
+    }
+
+    // 3. Show another simple window.
+    if (show_another_window)
+    {
+        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+        ImGui::Text("Hello from another window!");
+        if (ImGui::Button("Close Me"))
+            show_another_window = false;
+        ImGui::End();
+    }
+}
+
+void glut_display_func()
+{
+    // Start the Dear ImGui frame
+    ImGui_ImplOpenGL2_NewFrame();
+    ImGui_ImplGLUT_NewFrame();
+
+    my_display_code();
+
+    // Rendering
+    ImGui::Render();
+    ImGuiIO& io = ImGui::GetIO();
+    glViewport(0, 0, (GLsizei)io.DisplaySize.x, (GLsizei)io.DisplaySize.y);
+    glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+    glClear(GL_COLOR_BUFFER_BIT);
+    //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound, but prefer using the GL3+ code.
+    ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
+
+    glutSwapBuffers();
+    glutPostRedisplay();
+}
+
+// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+
+int main(int argc, char** argv)
+{
+    // Create GLUT window
+    glutInit(&argc, argv);
+#ifdef __FREEGLUT_EXT_H__
+    glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
+#endif
+    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_MULTISAMPLE);
+    glutInitWindowSize(1280, 720);
+    glutCreateWindow("Dear ImGui GLUT+OpenGL2 Example");
+
+    // Setup GLUT display function
+    // We will also call ImGui_ImplGLUT_InstallFuncs() to get all the other functions installed for us,
+    // otherwise it is possible to install our own functions and call the imgui_impl_glut.h functions ourselves.
+    glutDisplayFunc(glut_display_func);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGLUT_Init();
+    ImGui_ImplGLUT_InstallFuncs();
+    ImGui_ImplOpenGL2_Init();
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    glutMainLoop();
+
+    // Cleanup
+    ImGui_ImplOpenGL2_Shutdown();
+    ImGui_ImplGLUT_Shutdown();
+    ImGui::DestroyContext();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_marmalade/data/app.icf

@@ -0,0 +1,32 @@
+# This file is for configuration settings for your
+# application.
+#
+# The syntax is similar to windows .ini files ie
+#
+# [GroupName]
+# Setting = Value
+#
+# Which can be read by your application using
+#  e.g s3eConfigGetString("GroupName", "Setting", string)
+#
+# All settings must be documented in .config.txt files.
+# New settings specific to this application should be
+# documented in app.config.txt
+#
+# Some conditional operations are also permitted, see the
+# S3E documentation for details.
+
+[S3E]
+MemSize=6000000
+MemSizeDebug=6000000
+DispFixRot=FixedLandscape
+
+# emulate iphone 5 resolution, change these settings to emulate other display resolution
+WinWidth=1136
+WinHeight=640
+
+[GX]
+DataCacheSize=131070
+
+[Util] 
+#MemoryBreakpoint=1282

imgui-submodule/imgui/examples/example_marmalade/main.cpp

@@ -0,0 +1,123 @@
+// dear imgui: standalone example application for Marmalade
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+// Copyright (C) 2015 by Giovanni Zito
+// This file is part of Dear ImGui
+
+#include "imgui.h"
+#include "imgui_impl_marmalade.h"
+#include <stdio.h>
+
+#include <s3eKeyboard.h>
+#include <s3ePointer.h>
+#include <IwGx.h>
+
+int main(int, char**)
+{
+    IwGxInit();
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_Marmalade_Init(true);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    while (true)
+    {
+        if (s3eDeviceCheckQuitRequest())
+            break;
+
+        // Poll and handle inputs
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        s3eKeyboardUpdate();
+        s3ePointerUpdate();
+
+        // Start the Dear ImGui frame
+        ImGui_Marmalade_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        IwGxSetColClear(clear_color.x * 255, clear_color.y * 255, clear_color.z * 255, clear_color.w * 255);
+        IwGxClear();
+        ImGui_Marmalade_RenderDrawData(ImGui::GetDrawData());
+        IwGxSwapBuffers();
+
+        s3eDeviceYield(0);
+    }
+
+    // Cleanup
+    ImGui_Marmalade_Shutdown();
+    ImGui::DestroyContext();
+    IwGxTerminate();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_marmalade/marmalade_example.mkb

@@ -0,0 +1,46 @@
+#!/usr/bin/env mkb
+
+# ImGui - standalone example application for Marmalade
+# Copyright (C) 2015 by Giovanni Zito
+# This file is part of ImGui
+# https://github.com/ocornut/imgui
+
+define IMGUI_DISABLE_INCLUDE_IMCONFIG_H
+define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS
+define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS
+define _snprintf=snprintf
+
+options
+{
+    optimise-speed=1
+}
+
+includepaths
+{
+    ..
+    ../..
+}
+
+subprojects
+{
+    iwgx
+}
+
+files
+{
+    (.)
+    ["imgui"]
+    ../../imgui.cpp
+    ../../imgui_demo.cpp
+    ../../imgui_draw.cpp
+    ../../imgui_widgets.cpp
+    ../../imconfig.h
+    ../../imgui.h
+    ../../imgui_internal.h
+
+    ["imgui","Marmalade binding"]
+    ../imgui_impl_marmalade.h
+    ../imgui_impl_marmalade.cpp
+    main.cpp
+
+}

imgui-submodule/imgui/examples/example_null/build_win32.bat

@@ -0,0 +1,3 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+mkdir Debug
+cl /nologo /Zi /MD /I ..\.. %* *.cpp ..\..\*.cpp /FeDebug/example_null.exe /FoDebug/ /link gdi32.lib shell32.lib

imgui-submodule/imgui/examples/example_null/main.cpp

@@ -0,0 +1,37 @@
+// dear imgui: null/dummy example application
+// (compile and link imgui, create context, run headless with NO INPUTS, NO GRAPHICS OUTPUT)
+// This is useful to test building, but you cannot interact with anything here!
+#include "imgui.h"
+#include <stdio.h>
+
+int main(int, char**)
+{
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Build atlas
+    unsigned char* tex_pixels = NULL;
+    int tex_w, tex_h;
+    io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_w, &tex_h);
+
+    for (int n = 0; n < 20; n++)
+    {
+        printf("NewFrame() %d\n", n);
+        io.DisplaySize = ImVec2(1920, 1080);
+        io.DeltaTime = 1.0f / 60.0f;
+        ImGui::NewFrame();
+
+        static float f = 0.0f;
+        ImGui::Text("Hello, world!");
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+        ImGui::ShowDemoWindow(NULL);
+
+        ImGui::Render();
+    }
+
+    printf("DestroyContext()\n");
+    ImGui::DestroyContext();
+    return 0;
+}

imgui-submodule/imgui/examples/example_sdl_directx11/build_win32.bat

@@ -0,0 +1,8 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+set OUT_DIR=Debug
+set OUT_EXE=example_sdl_directx11
+set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include"
+set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_dx11.cpp ..\..\imgui*.cpp
+set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d11.lib d3dcompiler.lib
+mkdir %OUT_DIR%
+cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console

imgui-submodule/imgui/examples/example_sdl_directx11/main.cpp

@@ -0,0 +1,228 @@
+// dear imgui: standalone example application for SDL2 + DirectX 11
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_dx11.h"
+#include <d3d11.h>
+#include <stdio.h>
+#include <SDL.h>
+#include <SDL_syswm.h>
+
+// Data
+static ID3D11Device*            g_pd3dDevice = NULL;
+static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
+static IDXGISwapChain*          g_pSwapChain = NULL;
+static ID3D11RenderTargetView*  g_mainRenderTargetView = NULL;
+
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void CreateRenderTarget();
+void CleanupRenderTarget();
+
+// Main code
+int main(int, char**)
+{
+    // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // Setup window
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+DirectX11 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+    SDL_SysWMinfo wmInfo;
+    SDL_VERSION(&wmInfo.version);
+    SDL_GetWindowWMInfo(window, &wmInfo);
+    HWND hwnd = (HWND)wmInfo.info.win.window;
+
+    // Initialize Direct3D
+    if (!CreateDeviceD3D(hwnd))
+    {
+        CleanupDeviceD3D();
+        return 1;
+    }
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForD3D(window);
+    ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        SDL_Event event;
+        while (SDL_PollEvent(&event))
+        {
+            ImGui_ImplSDL2_ProcessEvent(&event);
+            if (event.type == SDL_QUIT)
+                done = true;
+            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+                done = true;
+            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
+            {                
+                // Release all outstanding references to the swap chain's buffers before resizing.
+                CleanupRenderTarget();
+                g_pSwapChain->ResizeBuffers(0, 0, 0, DXGI_FORMAT_UNKNOWN, 0);
+                CreateRenderTarget();
+            }
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplDX11_NewFrame();
+        ImGui_ImplSDL2_NewFrame(window);
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
+        g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_color);
+        ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
+
+        g_pSwapChain->Present(1, 0); // Present with vsync
+        //g_pSwapChain->Present(0, 0); // Present without vsync
+    }
+
+    // Cleanup
+    ImGui_ImplDX11_Shutdown();
+    ImGui_ImplSDL2_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupDeviceD3D();
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    // Setup swap chain
+    DXGI_SWAP_CHAIN_DESC sd;
+    ZeroMemory(&sd, sizeof(sd));
+    sd.BufferCount = 2;
+    sd.BufferDesc.Width = 0;
+    sd.BufferDesc.Height = 0;
+    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    sd.BufferDesc.RefreshRate.Numerator = 60;
+    sd.BufferDesc.RefreshRate.Denominator = 1;
+    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
+    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    sd.OutputWindow = hWnd;
+    sd.SampleDesc.Count = 1;
+    sd.SampleDesc.Quality = 0;
+    sd.Windowed = TRUE;
+    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
+
+    UINT createDeviceFlags = 0;
+    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
+    D3D_FEATURE_LEVEL featureLevel;
+    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
+    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
+        return false;
+
+    CreateRenderTarget();
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    CleanupRenderTarget();
+    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
+    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+void CreateRenderTarget()
+{
+    ID3D11Texture2D* pBackBuffer;
+    g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
+    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
+    pBackBuffer->Release();
+}
+
+void CleanupRenderTarget()
+{
+    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
+}

imgui-submodule/imgui/examples/example_sdl_metal/main.mm

@@ -0,0 +1,179 @@
+// Dear ImGui: standalone example application for SDL2 + Metal
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_metal.h"
+#include <stdio.h>
+#include <SDL.h>
+
+#import <Metal/Metal.h>
+#import <QuartzCore/QuartzCore.h>
+
+int main(int, char**)
+{
+    // Setup Dear ImGui binding
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
+
+    // Setup style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // Inform SDL that we will be using metal for rendering. Without this hint initialization of metal renderer may fail.
+    SDL_SetHint(SDL_HINT_RENDER_DRIVER, "metal");
+
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL+Metal example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    if (window == NULL)
+    {
+        printf("Error creating window: %s\n", SDL_GetError());
+        return -2;
+    }
+
+    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
+    if (renderer == NULL)
+    {
+        printf("Error creating renderer: %s\n", SDL_GetError());
+        return -3;
+    }
+
+    CAMetalLayer* layer = (__bridge CAMetalLayer*)SDL_RenderGetMetalLayer(renderer);
+    layer.pixelFormat = MTLPixelFormatBGRA8Unorm;
+    ImGui_ImplMetal_Init(layer.device);
+    ImGui_ImplSDL2_InitForMetal(window);
+
+    id<MTLCommandQueue> commandQueue = [layer.device newCommandQueue];
+    MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor new];
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    float clear_color[4] = {0.45f, 0.55f, 0.60f, 1.00f};
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        @autoreleasepool
+        {
+            // Poll and handle events (inputs, window resize, etc.)
+            // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+            // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+            // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+            // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+            SDL_Event event;
+            while (SDL_PollEvent(&event))
+            {
+                ImGui_ImplSDL2_ProcessEvent(&event);
+                if (event.type == SDL_QUIT)
+                    done = true;
+                if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+                    done = true;
+            }
+
+            int width, height;
+            SDL_GetRendererOutputSize(renderer, &width, &height);
+            layer.drawableSize = CGSizeMake(width, height);
+            id<CAMetalDrawable> drawable = [layer nextDrawable];
+
+            id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
+            renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
+            renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
+            renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
+            renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
+            id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
+            [renderEncoder pushDebugGroup:@"ImGui demo"];
+
+            // Start the Dear ImGui frame
+            ImGui_ImplMetal_NewFrame(renderPassDescriptor);
+            ImGui_ImplSDL2_NewFrame(window);
+            ImGui::NewFrame();
+
+            // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+            if (show_demo_window)
+                ImGui::ShowDemoWindow(&show_demo_window);
+
+            // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+            {
+                static float f = 0.0f;
+                static int counter = 0;
+
+                ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+                ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+                ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+                ImGui::Checkbox("Another Window", &show_another_window);
+
+                ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+                ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+                if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                    counter++;
+                ImGui::SameLine();
+                ImGui::Text("counter = %d", counter);
+
+                ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+                ImGui::End();
+            }
+
+            // 3. Show another simple window.
+            if (show_another_window)
+            {
+                ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+                ImGui::Text("Hello from another window!");
+                if (ImGui::Button("Close Me"))
+                    show_another_window = false;
+                ImGui::End();
+            }
+
+            // Rendering
+            ImGui::Render();
+            ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
+
+            [renderEncoder popDebugGroup];
+            [renderEncoder endEncoding];
+
+            [commandBuffer presentDrawable:drawable];
+            [commandBuffer commit];
+        }
+    }
+
+    // Cleanup
+    ImGui_ImplMetal_Shutdown();
+    ImGui_ImplSDL2_Shutdown();
+    ImGui::DestroyContext();
+
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_sdl_opengl2/README.md

@@ -0,0 +1,25 @@
+
+# How to Build
+
+- On Windows with Visual Studio's CLI
+
+```
+set SDL2_DIR=path_to_your_sdl2_folder
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_opengl2.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+#          ^^ include paths                  ^^ source files                                                           ^^ output exe                    ^^ output dir   ^^ libraries
+# or for 64-bit:
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_opengl2.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+```
+
+- On Linux and similar Unixes
+
+```
+c++ `sdl2-config --cflags` -I .. -I ../.. main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp ../../imgui*.cpp `sdl2-config --libs` -lGL
+```
+
+- On Mac OS X
+
+```
+brew install sdl2
+c++ `sdl2-config --cflags` -I .. -I ../.. main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp ../../imgui*.cpp `sdl2-config --libs` -framework OpenGl
+```

imgui-submodule/imgui/examples/example_sdl_opengl2/build_win32.bat

@@ -0,0 +1,8 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+set OUT_DIR=Debug
+set OUT_EXE=example_sdl_opengl2
+set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include
+set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp
+set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib
+mkdir %OUT_DIR%
+cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console

imgui-submodule/imgui/examples/example_sdl_opengl2/main.cpp

@@ -0,0 +1,154 @@
+// dear imgui: standalone example application for SDL2 + OpenGL
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
+
+// **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
+// **Prefer using the code in the example_sdl_opengl3/ folder**
+// See imgui_impl_sdl.cpp for details.
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_opengl2.h"
+#include <stdio.h>
+#include <SDL.h>
+#include <SDL_opengl.h>
+
+// Main code
+int main(int, char**)
+{
+    // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // Setup window
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
+    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+    SDL_GLContext gl_context = SDL_GL_CreateContext(window);
+    SDL_GL_MakeCurrent(window, gl_context);
+    SDL_GL_SetSwapInterval(1); // Enable vsync
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
+    ImGui_ImplOpenGL2_Init();
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        SDL_Event event;
+        while (SDL_PollEvent(&event))
+        {
+            ImGui_ImplSDL2_ProcessEvent(&event);
+            if (event.type == SDL_QUIT)
+                done = true;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplOpenGL2_NewFrame();
+        ImGui_ImplSDL2_NewFrame(window);
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
+        ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
+        SDL_GL_SwapWindow(window);
+    }
+
+    // Cleanup
+    ImGui_ImplOpenGL2_Shutdown();
+    ImGui_ImplSDL2_Shutdown();
+    ImGui::DestroyContext();
+
+    SDL_GL_DeleteContext(gl_context);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_sdl_opengl3/README.md

@@ -0,0 +1,25 @@
+
+# How to Build
+
+- On Windows with Visual Studio's CLI
+
+```
+set SDL2_DIR=path_to_your_sdl2_folder
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+#          ^^ include paths                                 ^^ source files                                                                                  ^^ output exe                    ^^ output dir   ^^ libraries
+# or for 64-bit:
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+```
+
+- On Linux and similar Unixes
+
+```
+c++ `sdl2-config --cflags` -I .. -I ../.. -I ../libs/gl3w main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp ../../imgui*.cpp ../libs/gl3w/GL/gl3w.c `sdl2-config --libs` -lGL -ldl
+```
+
+- On Mac OS X
+
+```
+brew install sdl2
+c++ `sdl2-config --cflags` -I .. -I ../.. -I ../libs/gl3w main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp ../../imgui*.cpp ../libs/gl3w/GL/gl3w.c `sdl2-config --libs` -framework OpenGl -framework CoreFoundation
+```

imgui-submodule/imgui/examples/example_sdl_opengl3/build_win32.bat

@@ -0,0 +1,8 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+set OUT_DIR=Debug
+set OUT_EXE=example_sdl_opengl3
+set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w
+set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c
+set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib
+mkdir %OUT_DIR%
+cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console

imgui-submodule/imgui/examples/example_sdl_opengl3/main.cpp

@@ -0,0 +1,203 @@
+// dear imgui: standalone example application for SDL2 + OpenGL
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
+// (GL3W is a helper library to access OpenGL functions since there is no standard header to access modern OpenGL functions easily. Alternatives are GLEW, Glad, etc.)
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_opengl3.h"
+#include <stdio.h>
+#include <SDL.h>
+
+// About Desktop OpenGL function loaders:
+//  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
+//  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
+//  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
+#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
+#include <GL/gl3w.h>    // Initialize with gl3wInit()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
+#include <GL/glew.h>    // Initialize with glewInit()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+#include <glad/glad.h>  // Initialize with gladLoadGL()
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+#include <glbinding/glbinding.h>  // Initialize with glbinding::initialize()
+#include <glbinding/gl/gl.h>
+using namespace gl;
+#else
+#include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
+#endif
+
+// Main code
+int main(int, char**)
+{
+    // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // Decide GL+GLSL versions
+#if __APPLE__
+    // GL 3.2 Core + GLSL 150
+    const char* glsl_version = "#version 150";
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG); // Always required on Mac
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
+#else
+    // GL 3.0 + GLSL 130
+    const char* glsl_version = "#version 130";
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
+#endif
+
+    // Create window with graphics context
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
+    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL3 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+    SDL_GLContext gl_context = SDL_GL_CreateContext(window);
+    SDL_GL_MakeCurrent(window, gl_context);
+    SDL_GL_SetSwapInterval(1); // Enable vsync
+
+    // Initialize OpenGL loader
+#if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
+    bool err = gl3wInit() != 0;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
+    bool err = glewInit() != GLEW_OK;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
+    bool err = gladLoadGL() == 0;
+#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
+    bool err = false;
+    glbinding::initialize([](const char* name) { return (glbinding::ProcAddress)SDL_GL_GetProcAddress(name); });
+#else
+    bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
+#endif
+    if (err)
+    {
+        fprintf(stderr, "Failed to initialize OpenGL loader!\n");
+        return 1;
+    }
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        SDL_Event event;
+        while (SDL_PollEvent(&event))
+        {
+            ImGui_ImplSDL2_ProcessEvent(&event);
+            if (event.type == SDL_QUIT)
+                done = true;
+            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
+                done = true;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplSDL2_NewFrame(window);
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+        SDL_GL_SwapWindow(window);
+    }
+
+    // Cleanup
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplSDL2_Shutdown();
+    ImGui::DestroyContext();
+
+    SDL_GL_DeleteContext(gl_context);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_sdl_vulkan/main.cpp

@@ -0,0 +1,527 @@
+// dear imgui: standalone example application for SDL2 + Vulkan
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
+// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
+//   You will use those if you want to use this rendering back-end in your engine/app.
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
+//   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
+// Read comments in imgui_impl_vulkan.h.
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_vulkan.h"
+#include <stdio.h>          // printf, fprintf
+#include <stdlib.h>         // abort
+#include <SDL.h>
+#include <SDL_vulkan.h>
+#include <vulkan/vulkan.h>
+
+//#define IMGUI_UNLIMITED_FRAME_RATE
+#ifdef _DEBUG
+#define IMGUI_VULKAN_DEBUG_REPORT
+#endif
+
+static VkAllocationCallbacks*   g_Allocator = NULL;
+static VkInstance               g_Instance = VK_NULL_HANDLE;
+static VkPhysicalDevice         g_PhysicalDevice = VK_NULL_HANDLE;
+static VkDevice                 g_Device = VK_NULL_HANDLE;
+static uint32_t                 g_QueueFamily = (uint32_t)-1;
+static VkQueue                  g_Queue = VK_NULL_HANDLE;
+static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
+static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
+
+static ImGui_ImplVulkanH_Window g_MainWindowData;
+static uint32_t                 g_MinImageCount = 2;
+static bool                     g_SwapChainRebuild = false;
+static int                      g_SwapChainResizeWidth = 0;
+static int                      g_SwapChainResizeHeight = 0;
+
+static void check_vk_result(VkResult err)
+{
+    if (err == 0) return;
+    printf("VkResult %d\n", err);
+    if (err < 0)
+        abort();
+}
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
+{
+    (void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
+    fprintf(stderr, "[vulkan] ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
+    return VK_FALSE;
+}
+#endif // IMGUI_VULKAN_DEBUG_REPORT
+
+static void SetupVulkan(const char** extensions, uint32_t extensions_count)
+{
+    VkResult err;
+
+    // Create Vulkan Instance
+    {
+        VkInstanceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+        create_info.enabledExtensionCount = extensions_count;
+        create_info.ppEnabledExtensionNames = extensions;
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+        // Enabling multiple validation layers grouped as LunarG standard validation
+        const char* layers[] = { "VK_LAYER_LUNARG_standard_validation" };
+        create_info.enabledLayerCount = 1;
+        create_info.ppEnabledLayerNames = layers;
+
+        // Enable debug report extension (we need additional storage, so we duplicate the user array to add our new extension to it)
+        const char** extensions_ext = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
+        memcpy(extensions_ext, extensions, extensions_count * sizeof(const char*));
+        extensions_ext[extensions_count] = "VK_EXT_debug_report";
+        create_info.enabledExtensionCount = extensions_count + 1;
+        create_info.ppEnabledExtensionNames = extensions_ext;
+
+        // Create Vulkan Instance
+        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+        check_vk_result(err);
+        free(extensions_ext);
+
+        // Get the function pointer (required for any extensions)
+        auto vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
+        IM_ASSERT(vkCreateDebugReportCallbackEXT != NULL);
+
+        // Setup the debug report callback
+        VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
+        debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
+        debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
+        debug_report_ci.pfnCallback = debug_report;
+        debug_report_ci.pUserData = NULL;
+        err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
+        check_vk_result(err);
+#else
+        // Create Vulkan Instance without any debug feature
+        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+        check_vk_result(err);
+        IM_UNUSED(g_DebugReport);
+#endif
+    }
+
+    // Select GPU
+    {
+        uint32_t gpu_count;
+        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
+        check_vk_result(err);
+        IM_ASSERT(gpu_count > 0);
+
+        VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
+        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
+        check_vk_result(err);
+
+        // If a number >1 of GPUs got reported, you should find the best fit GPU for your purpose
+        // e.g. VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU if available, or with the greatest memory available, etc.
+        // for sake of simplicity we'll just take the first one, assuming it has a graphics queue family.
+        g_PhysicalDevice = gpus[0];
+        free(gpus);
+    }
+
+    // Select graphics queue family
+    {
+        uint32_t count;
+        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, NULL);
+        VkQueueFamilyProperties* queues = (VkQueueFamilyProperties*)malloc(sizeof(VkQueueFamilyProperties) * count);
+        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, queues);
+        for (uint32_t i = 0; i < count; i++)
+            if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
+            {
+                g_QueueFamily = i;
+                break;
+            }
+        free(queues);
+        IM_ASSERT(g_QueueFamily != (uint32_t)-1);
+    }
+
+    // Create Logical Device (with 1 queue)
+    {
+        int device_extension_count = 1;
+        const char* device_extensions[] = { "VK_KHR_swapchain" };
+        const float queue_priority[] = { 1.0f };
+        VkDeviceQueueCreateInfo queue_info[1] = {};
+        queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+        queue_info[0].queueFamilyIndex = g_QueueFamily;
+        queue_info[0].queueCount = 1;
+        queue_info[0].pQueuePriorities = queue_priority;
+        VkDeviceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+        create_info.queueCreateInfoCount = sizeof(queue_info) / sizeof(queue_info[0]);
+        create_info.pQueueCreateInfos = queue_info;
+        create_info.enabledExtensionCount = device_extension_count;
+        create_info.ppEnabledExtensionNames = device_extensions;
+        err = vkCreateDevice(g_PhysicalDevice, &create_info, g_Allocator, &g_Device);
+        check_vk_result(err);
+        vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
+    }
+
+    // Create Descriptor Pool
+    {
+        VkDescriptorPoolSize pool_sizes[] =
+        {
+            { VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
+            { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
+            { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
+            { VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
+        };
+        VkDescriptorPoolCreateInfo pool_info = {};
+        pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+        pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+        pool_info.maxSets = 1000 * IM_ARRAYSIZE(pool_sizes);
+        pool_info.poolSizeCount = (uint32_t)IM_ARRAYSIZE(pool_sizes);
+        pool_info.pPoolSizes = pool_sizes;
+        err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
+        check_vk_result(err);
+    }
+}
+
+// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
+// Your real engine/app may not use them.
+static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
+{
+    wd->Surface = surface;
+
+    // Check for WSI support
+    VkBool32 res;
+    vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
+    if (res != VK_TRUE)
+    {
+        fprintf(stderr, "Error no WSI support on physical device 0\n");
+        exit(-1);
+    }
+
+    // Select Surface Format
+    const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
+    const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
+    wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
+
+    // Select Present Mode
+#ifdef IMGUI_UNLIMITED_FRAME_RATE
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
+#else
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
+#endif
+    wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
+    //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
+
+    // Create SwapChain, RenderPass, Framebuffer, etc.
+    IM_ASSERT(g_MinImageCount >= 2);
+    ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
+}
+
+static void CleanupVulkan()
+{
+    vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+    // Remove the debug report callback
+    auto vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
+    vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
+#endif // IMGUI_VULKAN_DEBUG_REPORT
+
+    vkDestroyDevice(g_Device, g_Allocator);
+    vkDestroyInstance(g_Instance, g_Allocator);
+}
+
+static void CleanupVulkanWindow()
+{
+    ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, &g_MainWindowData, g_Allocator);
+}
+
+static void FrameRender(ImGui_ImplVulkanH_Window* wd)
+{
+    VkResult err;
+
+    VkSemaphore image_acquired_semaphore  = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
+    check_vk_result(err);
+
+    ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
+    {
+        err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);    // wait indefinitely instead of periodically checking
+        check_vk_result(err);
+
+        err = vkResetFences(g_Device, 1, &fd->Fence);
+        check_vk_result(err);
+    }
+    {
+        err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
+        check_vk_result(err);
+        VkCommandBufferBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
+        check_vk_result(err);
+    }
+    {
+        VkRenderPassBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+        info.renderPass = wd->RenderPass;
+        info.framebuffer = fd->Framebuffer;
+        info.renderArea.extent.width = wd->Width;
+        info.renderArea.extent.height = wd->Height;
+        info.clearValueCount = 1;
+        info.pClearValues = &wd->ClearValue;
+        vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
+    }
+
+    // Record Imgui Draw Data and draw funcs into command buffer
+    ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
+
+    // Submit command buffer
+    vkCmdEndRenderPass(fd->CommandBuffer);
+    {
+        VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+        VkSubmitInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        info.waitSemaphoreCount = 1;
+        info.pWaitSemaphores = &image_acquired_semaphore;
+        info.pWaitDstStageMask = &wait_stage;
+        info.commandBufferCount = 1;
+        info.pCommandBuffers = &fd->CommandBuffer;
+        info.signalSemaphoreCount = 1;
+        info.pSignalSemaphores = &render_complete_semaphore;
+
+        err = vkEndCommandBuffer(fd->CommandBuffer);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
+        check_vk_result(err);
+    }
+}
+
+static void FramePresent(ImGui_ImplVulkanH_Window* wd)
+{
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    VkPresentInfoKHR info = {};
+    info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+    info.waitSemaphoreCount = 1;
+    info.pWaitSemaphores = &render_complete_semaphore;
+    info.swapchainCount = 1;
+    info.pSwapchains = &wd->Swapchain;
+    info.pImageIndices = &wd->FrameIndex;
+    VkResult err = vkQueuePresentKHR(g_Queue, &info);
+    check_vk_result(err);
+    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
+}
+
+int main(int, char**)
+{
+    // Setup SDL
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // Setup window
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+
+    // Setup Vulkan
+    uint32_t extensions_count = 0;
+    SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, NULL);
+    const char** extensions = new const char*[extensions_count];
+    SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, extensions);
+    SetupVulkan(extensions, extensions_count);
+    delete[] extensions;
+
+    // Create Window Surface
+    VkSurfaceKHR surface;
+    VkResult err;
+    if (SDL_Vulkan_CreateSurface(window, g_Instance, &surface) == 0)
+    {
+        printf("Failed to create Vulkan surface.\n");
+        return 1;
+    }
+
+    // Create Framebuffers
+    int w, h;
+    SDL_GetWindowSize(window, &w, &h);
+    ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
+    SetupVulkanWindow(wd, surface, w, h);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForVulkan(window);
+    ImGui_ImplVulkan_InitInfo init_info = {};
+    init_info.Instance = g_Instance;
+    init_info.PhysicalDevice = g_PhysicalDevice;
+    init_info.Device = g_Device;
+    init_info.QueueFamily = g_QueueFamily;
+    init_info.Queue = g_Queue;
+    init_info.PipelineCache = g_PipelineCache;
+    init_info.DescriptorPool = g_DescriptorPool;
+    init_info.Allocator = g_Allocator;
+    init_info.MinImageCount = g_MinImageCount;
+    init_info.ImageCount = wd->ImageCount;
+    init_info.CheckVkResultFn = check_vk_result;
+    ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Upload Fonts
+    {
+        // Use any command queue
+        VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
+        VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
+
+        err = vkResetCommandPool(g_Device, command_pool, 0);
+        check_vk_result(err);
+        VkCommandBufferBeginInfo begin_info = {};
+        begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        err = vkBeginCommandBuffer(command_buffer, &begin_info);
+        check_vk_result(err);
+
+        ImGui_ImplVulkan_CreateFontsTexture(command_buffer);
+
+        VkSubmitInfo end_info = {};
+        end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        end_info.commandBufferCount = 1;
+        end_info.pCommandBuffers = &command_buffer;
+        err = vkEndCommandBuffer(command_buffer);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
+        check_vk_result(err);
+
+        err = vkDeviceWaitIdle(g_Device);
+        check_vk_result(err);
+        ImGui_ImplVulkan_DestroyFontUploadObjects();
+    }
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        SDL_Event event;
+        while (SDL_PollEvent(&event))
+        {
+            ImGui_ImplSDL2_ProcessEvent(&event);
+            if (event.type == SDL_QUIT)
+                done = true;
+            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
+            {
+                g_SwapChainResizeWidth = (int)event.window.data1;
+                g_SwapChainResizeHeight = (int)event.window.data2;
+                g_SwapChainRebuild = true;
+            }
+        }
+
+        if (g_SwapChainRebuild)
+        {
+            g_SwapChainRebuild = false;
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, g_SwapChainResizeWidth, g_SwapChainResizeHeight, g_MinImageCount);
+            g_MainWindowData.FrameIndex = 0;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplVulkan_NewFrame();
+        ImGui_ImplSDL2_NewFrame(window);
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
+        FrameRender(wd);
+
+        FramePresent(wd);
+    }
+
+    // Cleanup
+    err = vkDeviceWaitIdle(g_Device);
+    check_vk_result(err);
+    ImGui_ImplVulkan_Shutdown();
+    ImGui_ImplSDL2_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupVulkanWindow();
+    CleanupVulkan();
+
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}

imgui-submodule/imgui/examples/example_win32_directx10/build_win32.bat

@@ -0,0 +1,4 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include" /D UNICODE /D _UNICODE *.cpp ..\imgui_impl_win32.cpp ..\imgui_impl_dx10.cpp ..\..\imgui*.cpp /FeDebug/example_win32_directx10.exe /FoDebug/ /link /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d10.lib d3dcompiler.lib
+

imgui-submodule/imgui/examples/example_win32_directx10/main.cpp

@@ -0,0 +1,238 @@
+// dear imgui: standalone example application for DirectX 10
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include "imgui.h"
+#include "imgui_impl_win32.h"
+#include "imgui_impl_dx10.h"
+#include <d3d10_1.h>
+#include <d3d10.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+#include <tchar.h>
+
+// Data
+static ID3D10Device*            g_pd3dDevice = NULL;
+static IDXGISwapChain*          g_pSwapChain = NULL;
+static ID3D10RenderTargetView*  g_mainRenderTargetView = NULL;
+
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void CreateRenderTarget();
+void CleanupRenderTarget();
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Main code
+int main(int, char**)
+{
+    // Create application window
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX10 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+
+    // Initialize Direct3D
+    if (!CreateDeviceD3D(hwnd))
+    {
+        CleanupDeviceD3D();
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+        return 1;
+    }
+
+    // Show the window
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX10_Init(g_pd3dDevice);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    MSG msg;
+    ZeroMemory(&msg, sizeof(msg));
+    while (msg.message != WM_QUIT)
+    {
+        // Poll and handle messages (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        {
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
+            continue;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplDX10_NewFrame();
+        ImGui_ImplWin32_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        g_pd3dDevice->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
+        g_pd3dDevice->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_color);
+        ImGui_ImplDX10_RenderDrawData(ImGui::GetDrawData());
+
+        g_pSwapChain->Present(1, 0); // Present with vsync
+        //g_pSwapChain->Present(0, 0); // Present without vsync
+    }
+
+    ImGui_ImplDX10_Shutdown();
+    ImGui_ImplWin32_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupDeviceD3D();
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    // Setup swap chain
+    DXGI_SWAP_CHAIN_DESC sd;
+    ZeroMemory(&sd, sizeof(sd));
+    sd.BufferCount = 2;
+    sd.BufferDesc.Width = 0;
+    sd.BufferDesc.Height = 0;
+    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    sd.BufferDesc.RefreshRate.Numerator = 60;
+    sd.BufferDesc.RefreshRate.Denominator = 1;
+    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
+    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    sd.OutputWindow = hWnd;
+    sd.SampleDesc.Count = 1;
+    sd.SampleDesc.Quality = 0;
+    sd.Windowed = TRUE;
+    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
+
+    UINT createDeviceFlags = 0;
+    //createDeviceFlags |= D3D10_CREATE_DEVICE_DEBUG;
+    if (D3D10CreateDeviceAndSwapChain(NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, D3D10_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice) != S_OK)
+        return false;
+
+    CreateRenderTarget();
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    CleanupRenderTarget();
+    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+void CreateRenderTarget()
+{
+    ID3D10Texture2D* pBackBuffer;
+    g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
+    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
+    pBackBuffer->Release();
+}
+
+void CleanupRenderTarget()
+{
+    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
+}
+
+// Forward declare message handler from imgui_impl_win32.cpp
+extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Win32 message handler
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        return true;
+
+    switch (msg)
+    {
+    case WM_SIZE:
+        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
+        {
+            CleanupRenderTarget();
+            g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
+            CreateRenderTarget();
+        }
+        return 0;
+    case WM_SYSCOMMAND:
+        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+            return 0;
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        return 0;
+    }
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}

imgui-submodule/imgui/examples/example_win32_directx11/build_win32.bat

@@ -0,0 +1,4 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include" /D UNICODE /D _UNICODE *.cpp ..\imgui_impl_dx11.cpp ..\imgui_impl_win32.cpp ..\..\imgui*.cpp /FeDebug/example_win32_directx11.exe /FoDebug/ /link /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d11.lib d3dcompiler.lib
+

imgui-submodule/imgui/examples/example_win32_directx11/main.cpp

@@ -0,0 +1,242 @@
+// dear imgui - standalone example application for DirectX 11
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include "imgui.h"
+#include "imgui_impl_win32.h"
+#include "imgui_impl_dx11.h"
+#include <d3d11.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+#include <tchar.h>
+
+// Data
+static ID3D11Device*            g_pd3dDevice = NULL;
+static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
+static IDXGISwapChain*          g_pSwapChain = NULL;
+static ID3D11RenderTargetView*  g_mainRenderTargetView = NULL;
+
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void CreateRenderTarget();
+void CleanupRenderTarget();
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Main code
+int main(int, char**)
+{
+    // Create application window
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX11 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+
+    // Initialize Direct3D
+    if (!CreateDeviceD3D(hwnd))
+    {
+        CleanupDeviceD3D();
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+        return 1;
+    }
+
+    // Show the window
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    MSG msg;
+    ZeroMemory(&msg, sizeof(msg));
+    while (msg.message != WM_QUIT)
+    {
+        // Poll and handle messages (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        {
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
+            continue;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplDX11_NewFrame();
+        ImGui_ImplWin32_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
+        g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_color);
+        ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
+
+        g_pSwapChain->Present(1, 0); // Present with vsync
+        //g_pSwapChain->Present(0, 0); // Present without vsync
+    }
+
+    // Cleanup
+    ImGui_ImplDX11_Shutdown();
+    ImGui_ImplWin32_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupDeviceD3D();
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    // Setup swap chain
+    DXGI_SWAP_CHAIN_DESC sd;
+    ZeroMemory(&sd, sizeof(sd));
+    sd.BufferCount = 2;
+    sd.BufferDesc.Width = 0;
+    sd.BufferDesc.Height = 0;
+    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    sd.BufferDesc.RefreshRate.Numerator = 60;
+    sd.BufferDesc.RefreshRate.Denominator = 1;
+    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
+    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    sd.OutputWindow = hWnd;
+    sd.SampleDesc.Count = 1;
+    sd.SampleDesc.Quality = 0;
+    sd.Windowed = TRUE;
+    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
+
+    UINT createDeviceFlags = 0;
+    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
+    D3D_FEATURE_LEVEL featureLevel;
+    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
+    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
+        return false;
+
+    CreateRenderTarget();
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    CleanupRenderTarget();
+    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
+    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+void CreateRenderTarget()
+{
+    ID3D11Texture2D* pBackBuffer;
+    g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
+    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
+    pBackBuffer->Release();
+}
+
+void CleanupRenderTarget()
+{
+    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
+}
+
+// Forward declare message handler from imgui_impl_win32.cpp
+extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Win32 message handler
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        return true;
+
+    switch (msg)
+    {
+    case WM_SIZE:
+        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
+        {
+            CleanupRenderTarget();
+            g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
+            CreateRenderTarget();
+        }
+        return 0;
+    case WM_SYSCOMMAND:
+        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+            return 0;
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        return 0;
+    }
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}

imgui-submodule/imgui/examples/example_win32_directx12/build_win32.bat

@@ -0,0 +1,4 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /D UNICODE /D _UNICODE *.cpp ..\imgui_impl_dx12.cpp ..\imgui_impl_win32.cpp ..\..\imgui*.cpp /FeDebug/example_win32_directx12.exe /FoDebug/ /link d3d12.lib d3dcompiler.lib dxgi.lib
+

imgui-submodule/imgui/examples/example_win32_directx12/main.cpp

@@ -0,0 +1,460 @@
+// dear imgui: standalone example application for DirectX 12
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// FIXME: 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*))
+
+#include "imgui.h"
+#include "imgui_impl_win32.h"
+#include "imgui_impl_dx12.h"
+#include <d3d12.h>
+#include <dxgi1_4.h>
+#include <tchar.h>
+
+//#define DX12_ENABLE_DEBUG_LAYER
+
+#ifdef DX12_ENABLE_DEBUG_LAYER
+#include <dxgidebug.h>
+#pragma comment(lib, "dxguid.lib")
+#endif
+
+struct FrameContext
+{
+    ID3D12CommandAllocator* CommandAllocator;
+    UINT64                  FenceValue;
+};
+
+// Data
+static int const                    NUM_FRAMES_IN_FLIGHT = 3;
+static FrameContext                 g_frameContext[NUM_FRAMES_IN_FLIGHT] = {};
+static UINT                         g_frameIndex = 0;
+
+static int const                    NUM_BACK_BUFFERS = 3;
+static ID3D12Device*                g_pd3dDevice = NULL;
+static ID3D12DescriptorHeap*        g_pd3dRtvDescHeap = NULL;
+static ID3D12DescriptorHeap*        g_pd3dSrvDescHeap = NULL;
+static ID3D12CommandQueue*          g_pd3dCommandQueue = NULL;
+static ID3D12GraphicsCommandList*   g_pd3dCommandList = NULL;
+static ID3D12Fence*                 g_fence = NULL;
+static HANDLE                       g_fenceEvent = NULL;
+static UINT64                       g_fenceLastSignaledValue = 0;
+static IDXGISwapChain3*             g_pSwapChain = NULL;
+static HANDLE                       g_hSwapChainWaitableObject = NULL;
+static ID3D12Resource*              g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
+static D3D12_CPU_DESCRIPTOR_HANDLE  g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
+
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void CreateRenderTarget();
+void CleanupRenderTarget();
+void WaitForLastSubmittedFrame();
+FrameContext* WaitForNextFrameResources();
+void ResizeSwapChain(HWND hWnd, int width, int height);
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Main code
+int main(int, char**)
+{
+    // Create application window
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX12 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+
+    // Initialize Direct3D
+    if (!CreateDeviceD3D(hwnd))
+    {
+        CleanupDeviceD3D();
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+        return 1;
+    }
+
+    // Show the window
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX12_Init(g_pd3dDevice, NUM_FRAMES_IN_FLIGHT,
+        DXGI_FORMAT_R8G8B8A8_UNORM, g_pd3dSrvDescHeap,
+        g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(),
+        g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    MSG msg;
+    ZeroMemory(&msg, sizeof(msg));
+    while (msg.message != WM_QUIT)
+    {
+        // Poll and handle messages (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        {
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
+            continue;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplDX12_NewFrame();
+        ImGui_ImplWin32_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        FrameContext* frameCtxt = WaitForNextFrameResources();
+        UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
+        frameCtxt->CommandAllocator->Reset();
+
+        D3D12_RESOURCE_BARRIER barrier = {};
+        barrier.Type                   = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
+        barrier.Flags                  = D3D12_RESOURCE_BARRIER_FLAG_NONE;
+        barrier.Transition.pResource   = g_mainRenderTargetResource[backBufferIdx];
+        barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
+        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
+        barrier.Transition.StateAfter  = D3D12_RESOURCE_STATE_RENDER_TARGET;
+
+        g_pd3dCommandList->Reset(frameCtxt->CommandAllocator, NULL);
+        g_pd3dCommandList->ResourceBarrier(1, &barrier);
+        g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], (float*)&clear_color, 0, NULL);
+        g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
+        g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
+        ImGui::Render();
+        ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
+        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
+        barrier.Transition.StateAfter  = D3D12_RESOURCE_STATE_PRESENT;
+        g_pd3dCommandList->ResourceBarrier(1, &barrier);
+        g_pd3dCommandList->Close();
+
+        g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
+
+        g_pSwapChain->Present(1, 0); // Present with vsync
+        //g_pSwapChain->Present(0, 0); // Present without vsync
+
+        UINT64 fenceValue = g_fenceLastSignaledValue + 1;
+        g_pd3dCommandQueue->Signal(g_fence, fenceValue);
+        g_fenceLastSignaledValue = fenceValue;
+        frameCtxt->FenceValue = fenceValue;
+    }
+
+    WaitForLastSubmittedFrame();
+    ImGui_ImplDX12_Shutdown();
+    ImGui_ImplWin32_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupDeviceD3D();
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    // Setup swap chain
+    DXGI_SWAP_CHAIN_DESC1 sd;
+    {
+        ZeroMemory(&sd, sizeof(sd));
+        sd.BufferCount = NUM_BACK_BUFFERS;
+        sd.Width = 0;
+        sd.Height = 0;
+        sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        sd.Flags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
+        sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+        sd.SampleDesc.Count = 1;
+        sd.SampleDesc.Quality = 0;
+        sd.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
+        sd.AlphaMode = DXGI_ALPHA_MODE_UNSPECIFIED;
+        sd.Scaling = DXGI_SCALING_STRETCH;
+        sd.Stereo = FALSE;
+    }
+
+#ifdef DX12_ENABLE_DEBUG_LAYER
+    ID3D12Debug* pdx12Debug = NULL;
+    if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&pdx12Debug))))
+    {
+        pdx12Debug->EnableDebugLayer();
+        pdx12Debug->Release();
+    }
+#endif
+
+    D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
+    if (D3D12CreateDevice(NULL, featureLevel, IID_PPV_ARGS(&g_pd3dDevice)) != S_OK)
+        return false;
+
+    {
+        D3D12_DESCRIPTOR_HEAP_DESC desc = {};
+        desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
+        desc.NumDescriptors = NUM_BACK_BUFFERS;
+        desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
+        desc.NodeMask = 1;
+        if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dRtvDescHeap)) != S_OK)
+            return false;
+
+        SIZE_T rtvDescriptorSize = g_pd3dDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
+        D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = g_pd3dRtvDescHeap->GetCPUDescriptorHandleForHeapStart();
+        for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
+        {
+            g_mainRenderTargetDescriptor[i] = rtvHandle;
+            rtvHandle.ptr += rtvDescriptorSize;
+        }
+    }
+
+    {
+        D3D12_DESCRIPTOR_HEAP_DESC desc = {};
+        desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
+        desc.NumDescriptors = 1;
+        desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
+        if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dSrvDescHeap)) != S_OK)
+            return false;
+    }
+
+    {
+        D3D12_COMMAND_QUEUE_DESC desc = {};
+        desc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
+        desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
+        desc.NodeMask = 1;
+        if (g_pd3dDevice->CreateCommandQueue(&desc, IID_PPV_ARGS(&g_pd3dCommandQueue)) != S_OK)
+            return false;
+    }
+
+    for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
+        if (g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&g_frameContext[i].CommandAllocator)) != S_OK)
+            return false;
+
+    if (g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, g_frameContext[0].CommandAllocator, NULL, IID_PPV_ARGS(&g_pd3dCommandList)) != S_OK ||
+        g_pd3dCommandList->Close() != S_OK)
+        return false;
+
+    if (g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&g_fence)) != S_OK)
+        return false;
+
+    g_fenceEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (g_fenceEvent == NULL)
+        return false;
+
+    {
+        IDXGIFactory4* dxgiFactory = NULL;
+        IDXGISwapChain1* swapChain1 = NULL;
+        if (CreateDXGIFactory1(IID_PPV_ARGS(&dxgiFactory)) != S_OK ||
+            dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1) != S_OK ||
+            swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain)) != S_OK)
+            return false;
+        swapChain1->Release();
+        dxgiFactory->Release();
+        g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
+        g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
+    }
+
+    CreateRenderTarget();
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    CleanupRenderTarget();
+    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
+    if (g_hSwapChainWaitableObject != NULL) { CloseHandle(g_hSwapChainWaitableObject); }
+    for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
+        if (g_frameContext[i].CommandAllocator) { g_frameContext[i].CommandAllocator->Release(); g_frameContext[i].CommandAllocator = NULL; }
+    if (g_pd3dCommandQueue) { g_pd3dCommandQueue->Release(); g_pd3dCommandQueue = NULL; }
+    if (g_pd3dCommandList) { g_pd3dCommandList->Release(); g_pd3dCommandList = NULL; }
+    if (g_pd3dRtvDescHeap) { g_pd3dRtvDescHeap->Release(); g_pd3dRtvDescHeap = NULL; }
+    if (g_pd3dSrvDescHeap) { g_pd3dSrvDescHeap->Release(); g_pd3dSrvDescHeap = NULL; }
+    if (g_fence) { g_fence->Release(); g_fence = NULL; }
+    if (g_fenceEvent) { CloseHandle(g_fenceEvent); g_fenceEvent = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+
+#ifdef DX12_ENABLE_DEBUG_LAYER
+    IDXGIDebug1* pDebug = NULL;
+    if (SUCCEEDED(DXGIGetDebugInterface1(0, IID_PPV_ARGS(&pDebug))))
+    {
+        pDebug->ReportLiveObjects(DXGI_DEBUG_ALL, DXGI_DEBUG_RLO_SUMMARY);
+        pDebug->Release();
+    }
+#endif
+}
+
+void CreateRenderTarget()
+{
+    for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
+    {
+        ID3D12Resource* pBackBuffer = NULL;
+        g_pSwapChain->GetBuffer(i, IID_PPV_ARGS(&pBackBuffer));
+        g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, g_mainRenderTargetDescriptor[i]);
+        g_mainRenderTargetResource[i] = pBackBuffer;
+    }
+}
+
+void CleanupRenderTarget()
+{
+    WaitForLastSubmittedFrame();
+
+    for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
+        if (g_mainRenderTargetResource[i]) { g_mainRenderTargetResource[i]->Release(); g_mainRenderTargetResource[i] = NULL; }
+}
+
+void WaitForLastSubmittedFrame()
+{
+    FrameContext* frameCtxt = &g_frameContext[g_frameIndex % NUM_FRAMES_IN_FLIGHT];
+
+    UINT64 fenceValue = frameCtxt->FenceValue;
+    if (fenceValue == 0)
+        return; // No fence was signaled
+
+    frameCtxt->FenceValue = 0;
+    if (g_fence->GetCompletedValue() >= fenceValue)
+        return;
+
+    g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
+    WaitForSingleObject(g_fenceEvent, INFINITE);
+}
+
+FrameContext* WaitForNextFrameResources()
+{
+    UINT nextFrameIndex = g_frameIndex + 1;
+    g_frameIndex = nextFrameIndex;
+
+    HANDLE waitableObjects[] = { g_hSwapChainWaitableObject, NULL };
+    DWORD numWaitableObjects = 1;
+
+    FrameContext* frameCtxt = &g_frameContext[nextFrameIndex % NUM_FRAMES_IN_FLIGHT];
+    UINT64 fenceValue = frameCtxt->FenceValue;
+    if (fenceValue != 0) // means no fence was signaled
+    {
+        frameCtxt->FenceValue = 0;
+        g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
+        waitableObjects[1] = g_fenceEvent;
+        numWaitableObjects = 2;
+    }
+
+    WaitForMultipleObjects(numWaitableObjects, waitableObjects, TRUE, INFINITE);
+
+    return frameCtxt;
+}
+
+void ResizeSwapChain(HWND hWnd, int width, int height)
+{
+    DXGI_SWAP_CHAIN_DESC1 sd;
+    g_pSwapChain->GetDesc1(&sd);
+    sd.Width = width;
+    sd.Height = height;
+
+    IDXGIFactory4* dxgiFactory = NULL;
+    g_pSwapChain->GetParent(IID_PPV_ARGS(&dxgiFactory));
+
+    g_pSwapChain->Release();
+    CloseHandle(g_hSwapChainWaitableObject);
+
+    IDXGISwapChain1* swapChain1 = NULL;
+    dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1);
+    swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain));
+    swapChain1->Release();
+    dxgiFactory->Release();
+
+    g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
+
+    g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
+    assert(g_hSwapChainWaitableObject != NULL);
+}
+
+// Forward declare message handler from imgui_impl_win32.cpp
+extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Win32 message handler
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        return true;
+
+    switch (msg)
+    {
+    case WM_SIZE:
+        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
+        {
+            ImGui_ImplDX12_InvalidateDeviceObjects();
+            CleanupRenderTarget();
+            ResizeSwapChain(hWnd, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam));
+            CreateRenderTarget();
+            ImGui_ImplDX12_CreateDeviceObjects();
+        }
+        return 0;
+    case WM_SYSCOMMAND:
+        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+            return 0;
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        return 0;
+    }
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}

imgui-submodule/imgui/examples/example_win32_directx9/build_win32.bat

@@ -0,0 +1,3 @@
+@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
+mkdir Debug
+cl /nologo /Zi /MD /I .. /I ..\.. /I "%DXSDK_DIR%/Include" /D UNICODE /D _UNICODE *.cpp ..\imgui_impl_dx9.cpp ..\imgui_impl_win32.cpp ..\..\imgui*.cpp /FeDebug/example_win32_directx9.exe /FoDebug/ /link /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d9.lib

imgui-submodule/imgui/examples/example_win32_directx9/main.cpp

@@ -0,0 +1,233 @@
+// dear imgui: standalone example application for DirectX 9
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include "imgui.h"
+#include "imgui_impl_dx9.h"
+#include "imgui_impl_win32.h"
+#include <d3d9.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+#include <tchar.h>
+
+// Data
+static LPDIRECT3D9              g_pD3D = NULL;
+static LPDIRECT3DDEVICE9        g_pd3dDevice = NULL;
+static D3DPRESENT_PARAMETERS    g_d3dpp = {};
+
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void ResetDevice();
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Main code
+int main(int, char**)
+{
+    // Create application window
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX9 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+
+    // Initialize Direct3D
+    if (!CreateDeviceD3D(hwnd))
+    {
+        CleanupDeviceD3D();
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+        return 1;
+    }
+
+    // Show the window
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX9_Init(g_pd3dDevice);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'docs/FONTS.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    MSG msg;
+    ZeroMemory(&msg, sizeof(msg));
+    while (msg.message != WM_QUIT)
+    {
+        // Poll and handle messages (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        {
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
+            continue;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplDX9_NewFrame();
+        ImGui_ImplWin32_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::EndFrame();
+        g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, FALSE);
+        g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
+        g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, FALSE);
+        D3DCOLOR clear_col_dx = D3DCOLOR_RGBA((int)(clear_color.x*255.0f), (int)(clear_color.y*255.0f), (int)(clear_color.z*255.0f), (int)(clear_color.w*255.0f));
+        g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0);
+        if (g_pd3dDevice->BeginScene() >= 0)
+        {
+            ImGui::Render();
+            ImGui_ImplDX9_RenderDrawData(ImGui::GetDrawData());
+            g_pd3dDevice->EndScene();
+        }
+        HRESULT result = g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
+
+        // Handle loss of D3D9 device
+        if (result == D3DERR_DEVICELOST && g_pd3dDevice->TestCooperativeLevel() == D3DERR_DEVICENOTRESET)
+            ResetDevice();
+    }
+
+    ImGui_ImplDX9_Shutdown();
+    ImGui_ImplWin32_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupDeviceD3D();
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    if ((g_pD3D = Direct3DCreate9(D3D_SDK_VERSION)) == NULL)
+        return false;
+
+    // Create the D3DDevice
+    ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
+    g_d3dpp.Windowed = TRUE;
+    g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
+    g_d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
+    g_d3dpp.EnableAutoDepthStencil = TRUE;
+    g_d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
+    g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE;           // Present with vsync
+    //g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;   // Present without vsync, maximum unthrottled framerate
+    if (g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0)
+        return false;
+
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+    if (g_pD3D) { g_pD3D->Release(); g_pD3D = NULL; }
+}
+
+void ResetDevice()
+{
+    ImGui_ImplDX9_InvalidateDeviceObjects();
+    HRESULT hr = g_pd3dDevice->Reset(&g_d3dpp);
+    if (hr == D3DERR_INVALIDCALL)
+        IM_ASSERT(0);
+    ImGui_ImplDX9_CreateDeviceObjects();
+}
+
+// Forward declare message handler from imgui_impl_win32.cpp
+extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Win32 message handler
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        return true;
+
+    switch (msg)
+    {
+    case WM_SIZE:
+        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
+        {
+            g_d3dpp.BackBufferWidth = LOWORD(lParam);
+            g_d3dpp.BackBufferHeight = HIWORD(lParam);
+            ResetDevice();
+        }
+        return 0;
+    case WM_SYSCOMMAND:
+        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+            return 0;
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        return 0;
+    }
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}

imgui-submodule/imgui/examples/imgui_impl_allegro5.cpp

@@ -0,0 +1,427 @@
+// dear imgui: Renderer + Platform Binding for Allegro 5
+// (Info: Allegro 5 is a cross-platform general purpose library for handling windows, inputs, graphics, etc.)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Platform: Clipboard support (from Allegro 5.1.12)
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
+// Issues:
+//  [ ] Renderer: The renderer is suboptimal as we need to unindex our buffers and convert vertices manually.
+//  [ ] Platform: Missing gamepad support.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui, Original Allegro 5 code by @birthggd
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-12-05: Inputs: Added support for ImGuiMouseCursor_NotAllowed mouse cursor.
+//  2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
+//  2019-05-11: Inputs: Don't filter character value from ALLEGRO_EVENT_KEY_CHAR before calling AddInputCharacter().
+//  2019-04-30: Renderer: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2018-11-30: Platform: Added touchscreen support.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName/io.BackendRendererName so they can be displayed in the About Window.
+//  2018-06-13: Platform: Added clipboard support (from Allegro 5.1.12).
+//  2018-06-13: Renderer: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
+//  2018-06-13: Renderer: Backup/restore transform and clipping rectangle.
+//  2018-06-11: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
+//  2018-04-18: Misc: Renamed file from imgui_impl_a5.cpp to imgui_impl_allegro5.cpp.
+//  2018-04-18: Misc: Added support for 32-bit vertex indices to avoid conversion at runtime. Added imconfig_allegro5.h to enforce 32-bit indices when included from imgui.h.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplAllegro5_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+//  2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
+
+#include <stdint.h>     // uint64_t
+#include <cstring>      // memcpy
+#include "imgui.h"
+#include "imgui_impl_allegro5.h"
+
+// Allegro
+#include <allegro5/allegro.h>
+#include <allegro5/allegro_primitives.h>
+#ifdef _WIN32
+#include <allegro5/allegro_windows.h>
+#endif
+#define ALLEGRO_HAS_CLIPBOARD   (ALLEGRO_VERSION_INT >= ((5 << 24) | (1 << 16) | (12 << 8)))    // Clipboard only supported from Allegro 5.1.12
+
+// Visual Studio warnings
+#ifdef _MSC_VER
+#pragma warning (disable: 4127) // condition expression is constant
+#endif
+
+// Data
+static ALLEGRO_DISPLAY*         g_Display = NULL;
+static ALLEGRO_BITMAP*          g_Texture = NULL;
+static double                   g_Time = 0.0;
+static ALLEGRO_MOUSE_CURSOR*    g_MouseCursorInvisible = NULL;
+static ALLEGRO_VERTEX_DECL*     g_VertexDecl = NULL;
+static char*                    g_ClipboardTextData = NULL;
+
+struct ImDrawVertAllegro
+{
+    ImVec2 pos;
+    ImVec2 uv;
+    ALLEGRO_COLOR col;
+};
+
+static void ImGui_ImplAllegro5_SetupRenderState(ImDrawData* draw_data)
+{
+    // Setup blending
+    al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA);
+
+    // Setup orthographic projection matrix
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
+    {
+        float L = draw_data->DisplayPos.x;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
+        float T = draw_data->DisplayPos.y;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
+        ALLEGRO_TRANSFORM transform;
+        al_identity_transform(&transform);
+        al_use_transform(&transform);
+        al_orthographic_transform(&transform, L, T, 1.0f, R, B, -1.0f);
+        al_use_projection_transform(&transform);
+    }
+}
+
+// Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // Backup Allegro state that will be modified
+    ALLEGRO_TRANSFORM last_transform = *al_get_current_transform();
+    ALLEGRO_TRANSFORM last_projection_transform = *al_get_current_projection_transform();
+    int last_clip_x, last_clip_y, last_clip_w, last_clip_h;
+    al_get_clipping_rectangle(&last_clip_x, &last_clip_y, &last_clip_w, &last_clip_h);
+    int last_blender_op, last_blender_src, last_blender_dst;
+    al_get_blender(&last_blender_op, &last_blender_src, &last_blender_dst);
+
+    // Setup desired render state
+    ImGui_ImplAllegro5_SetupRenderState(draw_data);
+
+    // Render command lists
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+
+        // Allegro's implementation of al_draw_indexed_prim() for DX9 is completely broken. Unindex our buffers ourselves.
+        // FIXME-OPT: Unfortunately Allegro doesn't support 32-bit packed colors so we have to convert them to 4 float as well..
+        static ImVector<ImDrawVertAllegro> vertices;
+        vertices.resize(cmd_list->IdxBuffer.Size);
+        for (int i = 0; i < cmd_list->IdxBuffer.Size; i++)
+        {
+            const ImDrawVert* src_v = &cmd_list->VtxBuffer[cmd_list->IdxBuffer[i]];
+            ImDrawVertAllegro* dst_v = &vertices[i];
+            dst_v->pos = src_v->pos;
+            dst_v->uv = src_v->uv;
+            unsigned char* c = (unsigned char*)&src_v->col;
+            dst_v->col = al_map_rgba(c[0], c[1], c[2], c[3]);
+        }
+
+        const int* indices = NULL;
+        if (sizeof(ImDrawIdx) == 2)
+        {
+            // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request Dear ImGui to output 32-bit indices.
+            // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful.
+            static ImVector<int> indices_converted;
+            indices_converted.resize(cmd_list->IdxBuffer.Size);
+            for (int i = 0; i < cmd_list->IdxBuffer.Size; ++i)
+                indices_converted[i] = (int)cmd_list->IdxBuffer.Data[i];
+            indices = indices_converted.Data;
+        }
+        else if (sizeof(ImDrawIdx) == 4)
+        {
+            indices = (const int*)cmd_list->IdxBuffer.Data;
+        }
+
+        // Render command lists
+        int idx_offset = 0;
+        ImVec2 clip_off = draw_data->DisplayPos;
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplAllegro5_SetupRenderState(draw_data);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                // Draw
+                ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId;
+                al_set_clipping_rectangle(pcmd->ClipRect.x - clip_off.x, pcmd->ClipRect.y - clip_off.y, pcmd->ClipRect.z - pcmd->ClipRect.x, pcmd->ClipRect.w - pcmd->ClipRect.y);
+                al_draw_prim(&vertices[0], g_VertexDecl, texture, idx_offset, idx_offset + pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST);
+            }
+            idx_offset += pcmd->ElemCount;
+        }
+    }
+
+    // Restore modified Allegro state
+    al_set_blender(last_blender_op, last_blender_src, last_blender_dst);
+    al_set_clipping_rectangle(last_clip_x, last_clip_y, last_clip_w, last_clip_h);
+    al_use_transform(&last_transform);
+    al_use_projection_transform(&last_projection_transform);
+}
+
+bool ImGui_ImplAllegro5_CreateDeviceObjects()
+{
+    // Build texture atlas
+    ImGuiIO &io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Create texture
+    int flags = al_get_new_bitmap_flags();
+    int fmt = al_get_new_bitmap_format();
+    al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR);
+    al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE);
+    ALLEGRO_BITMAP* img = al_create_bitmap(width, height);
+    al_set_new_bitmap_flags(flags);
+    al_set_new_bitmap_format(fmt);
+    if (!img)
+        return false;
+
+    ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY);
+    if (!locked_img)
+    {
+        al_destroy_bitmap(img);
+        return false;
+    }
+    memcpy(locked_img->data, pixels, sizeof(int)*width*height);
+    al_unlock_bitmap(img);
+
+    // Convert software texture to hardware texture.
+    ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img);
+    al_destroy_bitmap(img);
+    if (!cloned_img)
+        return false;
+
+    // Store our identifier
+    io.Fonts->TexID = (void*)cloned_img;
+    g_Texture = cloned_img;
+
+    // Create an invisible mouse cursor
+    // Because al_hide_mouse_cursor() seems to mess up with the actual inputs..
+    ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8);
+    g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0);
+    al_destroy_bitmap(mouse_cursor);
+
+    return true;
+}
+
+void ImGui_ImplAllegro5_InvalidateDeviceObjects()
+{
+    if (g_Texture)
+    {
+        al_destroy_bitmap(g_Texture);
+        ImGui::GetIO().Fonts->TexID = NULL;
+        g_Texture = NULL;
+    }
+    if (g_MouseCursorInvisible)
+    {
+        al_destroy_mouse_cursor(g_MouseCursorInvisible);
+        g_MouseCursorInvisible = NULL;
+    }
+}
+
+#if ALLEGRO_HAS_CLIPBOARD
+static const char* ImGui_ImplAllegro5_GetClipboardText(void*)
+{
+    if (g_ClipboardTextData)
+        al_free(g_ClipboardTextData);
+    g_ClipboardTextData = al_get_clipboard_text(g_Display);
+    return g_ClipboardTextData;
+}
+
+static void ImGui_ImplAllegro5_SetClipboardText(void*, const char* text)
+{
+    al_set_clipboard_text(g_Display, text);
+}
+#endif
+
+bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
+{
+    g_Display = display;
+
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;       // We can honor GetMouseCursor() values (optional)
+    io.BackendPlatformName = io.BackendRendererName = "imgui_impl_allegro5";
+
+    // Create custom vertex declaration.
+    // Unfortunately Allegro doesn't support 32-bit packed colors so we have to convert them to 4 floats.
+    // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion.
+    ALLEGRO_VERTEX_ELEMENT elems[] =
+    {
+        { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, pos) },
+        { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, IM_OFFSETOF(ImDrawVertAllegro, uv) },
+        { ALLEGRO_PRIM_COLOR_ATTR, 0, IM_OFFSETOF(ImDrawVertAllegro, col) },
+        { 0, 0, 0 }
+    };
+    g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro));
+
+    io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB;
+    io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP;
+    io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN;
+    io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME;
+    io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END;
+    io.KeyMap[ImGuiKey_Insert] = ALLEGRO_KEY_INSERT;
+    io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Space] = ALLEGRO_KEY_SPACE;
+    io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_KeyPadEnter] = ALLEGRO_KEY_PAD_ENTER;
+    io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A;
+    io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C;
+    io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V;
+    io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X;
+    io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y;
+    io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z;
+    io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
+
+#if ALLEGRO_HAS_CLIPBOARD
+    io.SetClipboardTextFn = ImGui_ImplAllegro5_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_ImplAllegro5_GetClipboardText;
+    io.ClipboardUserData = NULL;
+#endif
+
+    return true;
+}
+
+void ImGui_ImplAllegro5_Shutdown()
+{
+    ImGui_ImplAllegro5_InvalidateDeviceObjects();
+
+    g_Display = NULL;
+    g_Time = 0.0;
+
+    if (g_VertexDecl)
+        al_destroy_vertex_decl(g_VertexDecl);
+    g_VertexDecl = NULL;
+
+    if (g_ClipboardTextData)
+        al_free(g_ClipboardTextData);
+    g_ClipboardTextData = NULL;
+}
+
+// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+bool ImGui_ImplAllegro5_ProcessEvent(ALLEGRO_EVENT *ev)
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    switch (ev->type)
+    {
+    case ALLEGRO_EVENT_MOUSE_AXES:
+        if (ev->mouse.display == g_Display)
+        {
+            io.MouseWheel += ev->mouse.dz;
+            io.MouseWheelH += ev->mouse.dw;
+            io.MousePos = ImVec2(ev->mouse.x, ev->mouse.y);
+        }
+        return true;
+    case ALLEGRO_EVENT_MOUSE_BUTTON_DOWN:
+    case ALLEGRO_EVENT_MOUSE_BUTTON_UP:
+        if (ev->mouse.display == g_Display && ev->mouse.button <= 5)
+            io.MouseDown[ev->mouse.button - 1] = (ev->type == ALLEGRO_EVENT_MOUSE_BUTTON_DOWN);
+        return true;
+    case ALLEGRO_EVENT_TOUCH_MOVE:
+        if (ev->touch.display == g_Display)
+            io.MousePos = ImVec2(ev->touch.x, ev->touch.y);
+        return true;
+    case ALLEGRO_EVENT_TOUCH_BEGIN:
+    case ALLEGRO_EVENT_TOUCH_END:
+    case ALLEGRO_EVENT_TOUCH_CANCEL:
+        if (ev->touch.display == g_Display && ev->touch.primary)
+            io.MouseDown[0] = (ev->type == ALLEGRO_EVENT_TOUCH_BEGIN);
+        return true;
+    case ALLEGRO_EVENT_MOUSE_LEAVE_DISPLAY:
+        if (ev->mouse.display == g_Display)
+            io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
+        return true;
+    case ALLEGRO_EVENT_KEY_CHAR:
+        if (ev->keyboard.display == g_Display)
+            io.AddInputCharacter((unsigned int)ev->keyboard.unichar);
+        return true;
+    case ALLEGRO_EVENT_KEY_DOWN:
+    case ALLEGRO_EVENT_KEY_UP:
+        if (ev->keyboard.display == g_Display)
+            io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN);
+        return true;
+    }
+    return false;
+}
+
+static void ImGui_ImplAllegro5_UpdateMouseCursor()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
+        return;
+
+    ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
+    if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)
+    {
+        // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
+        al_set_mouse_cursor(g_Display, g_MouseCursorInvisible);
+    }
+    else
+    {
+        ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT;
+        switch (imgui_cursor)
+        {
+        case ImGuiMouseCursor_TextInput:    cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break;
+        case ImGuiMouseCursor_ResizeAll:    cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break;
+        case ImGuiMouseCursor_ResizeNS:     cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break;
+        case ImGuiMouseCursor_ResizeEW:     cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break;
+        case ImGuiMouseCursor_ResizeNESW:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break;
+        case ImGuiMouseCursor_ResizeNWSE:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break;
+        case ImGuiMouseCursor_NotAllowed:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_UNAVAILABLE; break;
+        }
+        al_set_system_mouse_cursor(g_Display, cursor_id);
+    }
+}
+
+void ImGui_ImplAllegro5_NewFrame()
+{
+    if (!g_Texture)
+        ImGui_ImplAllegro5_CreateDeviceObjects();
+
+    ImGuiIO &io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w, h;
+    w = al_get_display_width(g_Display);
+    h = al_get_display_height(g_Display);
+    io.DisplaySize = ImVec2((float)w, (float)h);
+
+    // Setup time step
+    double current_time = al_get_time();
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    // Setup inputs
+    ALLEGRO_KEYBOARD_STATE keys;
+    al_get_keyboard_state(&keys);
+    io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL);
+    io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT);
+    io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR);
+    io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN);
+
+    ImGui_ImplAllegro5_UpdateMouseCursor();
+}

imgui-submodule/imgui/examples/imgui_impl_allegro5.h

@@ -0,0 +1,29 @@
+// dear imgui: Renderer + Platform Binding for Allegro 5
+// (Info: Allegro 5 is a cross-platform general purpose library for handling windows, inputs, graphics, etc.)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Platform: Clipboard support (from Allegro 5.1.12)
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
+// Issues:
+//  [ ] Renderer: The renderer is suboptimal as we need to unindex our buffers and convert vertices manually.
+//  [ ] Platform: Missing gamepad support.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui, Original Allegro 5 code by @birthggd
+
+#pragma once
+
+struct ALLEGRO_DISPLAY;
+union ALLEGRO_EVENT;
+
+IMGUI_IMPL_API bool     ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display);
+IMGUI_IMPL_API void     ImGui_ImplAllegro5_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplAllegro5_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data);
+IMGUI_IMPL_API bool     ImGui_ImplAllegro5_ProcessEvent(ALLEGRO_EVENT* event);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_IMPL_API bool     ImGui_ImplAllegro5_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplAllegro5_InvalidateDeviceObjects();

imgui-submodule/imgui/examples/imgui_impl_dx10.cpp

@@ -0,0 +1,529 @@
+// dear imgui: Renderer for DirectX10
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-07-21: DirectX10: Backup, clear and restore Geometry Shader is any is bound when calling ImGui_ImplDX10_RenderDrawData().
+//  2019-05-29: DirectX10: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX10: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-07-13: DirectX10: Fixed unreleased resources in Init and Shutdown functions.
+//  2018-06-08: Misc: Extracted imgui_impl_dx10.cpp/.h away from the old combined DX10+Win32 example.
+//  2018-06-08: DirectX10: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
+//  2018-04-09: Misc: Fixed erroneous call to io.Fonts->ClearInputData() + ClearTexData() that was left in DX10 example but removed in 1.47 (Nov 2015) on other back-ends.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX10_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+//  2016-05-07: DirectX10: Disabling depth-write.
+
+#include "imgui.h"
+#include "imgui_impl_dx10.h"
+
+// DirectX
+#include <stdio.h>
+#include <d3d10_1.h>
+#include <d3d10.h>
+#include <d3dcompiler.h>
+#ifdef _MSC_VER
+#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
+#endif
+
+// DirectX data
+static ID3D10Device*            g_pd3dDevice = NULL;
+static IDXGIFactory*            g_pFactory = NULL;
+static ID3D10Buffer*            g_pVB = NULL;
+static ID3D10Buffer*            g_pIB = NULL;
+static ID3D10Blob*              g_pVertexShaderBlob = NULL;
+static ID3D10VertexShader*      g_pVertexShader = NULL;
+static ID3D10InputLayout*       g_pInputLayout = NULL;
+static ID3D10Buffer*            g_pVertexConstantBuffer = NULL;
+static ID3D10Blob*              g_pPixelShaderBlob = NULL;
+static ID3D10PixelShader*       g_pPixelShader = NULL;
+static ID3D10SamplerState*      g_pFontSampler = NULL;
+static ID3D10ShaderResourceView*g_pFontTextureView = NULL;
+static ID3D10RasterizerState*   g_pRasterizerState = NULL;
+static ID3D10BlendState*        g_pBlendState = NULL;
+static ID3D10DepthStencilState* g_pDepthStencilState = NULL;
+static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
+
+struct VERTEX_CONSTANT_BUFFER
+{
+    float   mvp[4][4];
+};
+
+static void ImGui_ImplDX10_SetupRenderState(ImDrawData* draw_data, ID3D10Device* ctx)
+{
+    // Setup viewport
+    D3D10_VIEWPORT vp;
+    memset(&vp, 0, sizeof(D3D10_VIEWPORT));
+    vp.Width = (UINT)draw_data->DisplaySize.x;
+    vp.Height = (UINT)draw_data->DisplaySize.y;
+    vp.MinDepth = 0.0f;
+    vp.MaxDepth = 1.0f;
+    vp.TopLeftX = vp.TopLeftY = 0;
+    ctx->RSSetViewports(1, &vp);
+
+    // Bind shader and vertex buffers
+    unsigned int stride = sizeof(ImDrawVert);
+    unsigned int offset = 0;
+    ctx->IASetInputLayout(g_pInputLayout);
+    ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
+    ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
+    ctx->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    ctx->VSSetShader(g_pVertexShader);
+    ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
+    ctx->PSSetShader(g_pPixelShader);
+    ctx->PSSetSamplers(0, 1, &g_pFontSampler);
+    ctx->GSSetShader(NULL);
+
+    // Setup render state
+    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
+    ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
+    ctx->RSSetState(g_pRasterizerState);
+}
+
+// Render function
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    ID3D10Device* ctx = g_pd3dDevice;
+
+    // Create and grow vertex/index buffers if needed
+    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
+    {
+        if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        D3D10_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D10_BUFFER_DESC));
+        desc.Usage = D3D10_USAGE_DYNAMIC;
+        desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert);
+        desc.BindFlags = D3D10_BIND_VERTEX_BUFFER;
+        desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
+        desc.MiscFlags = 0;
+        if (ctx->CreateBuffer(&desc, NULL, &g_pVB) < 0)
+            return;
+    }
+
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        D3D10_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D10_BUFFER_DESC));
+        desc.Usage = D3D10_USAGE_DYNAMIC;
+        desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx);
+        desc.BindFlags = D3D10_BIND_INDEX_BUFFER;
+        desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
+        if (ctx->CreateBuffer(&desc, NULL, &g_pIB) < 0)
+            return;
+    }
+
+    // Copy and convert all vertices into a single contiguous buffer
+    ImDrawVert* vtx_dst = NULL;
+    ImDrawIdx* idx_dst = NULL;
+    g_pVB->Map(D3D10_MAP_WRITE_DISCARD, 0, (void**)&vtx_dst);
+    g_pIB->Map(D3D10_MAP_WRITE_DISCARD, 0, (void**)&idx_dst);
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
+        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+        vtx_dst += cmd_list->VtxBuffer.Size;
+        idx_dst += cmd_list->IdxBuffer.Size;
+    }
+    g_pVB->Unmap();
+    g_pIB->Unmap();
+
+    // Setup orthographic projection matrix into our constant buffer
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
+    {
+        void* mapped_resource;
+        if (g_pVertexConstantBuffer->Map(D3D10_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
+            return;
+        VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource;
+        float L = draw_data->DisplayPos.x;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
+        float T = draw_data->DisplayPos.y;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
+        float mvp[4][4] =
+        {
+            { 2.0f/(R-L),   0.0f,           0.0f,       0.0f },
+            { 0.0f,         2.0f/(T-B),     0.0f,       0.0f },
+            { 0.0f,         0.0f,           0.5f,       0.0f },
+            { (R+L)/(L-R),  (T+B)/(B-T),    0.5f,       1.0f },
+        };
+        memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
+        g_pVertexConstantBuffer->Unmap();
+    }
+
+    // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
+    struct BACKUP_DX10_STATE
+    {
+        UINT                        ScissorRectsCount, ViewportsCount;
+        D3D10_RECT                  ScissorRects[D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        D3D10_VIEWPORT              Viewports[D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        ID3D10RasterizerState*      RS;
+        ID3D10BlendState*           BlendState;
+        FLOAT                       BlendFactor[4];
+        UINT                        SampleMask;
+        UINT                        StencilRef;
+        ID3D10DepthStencilState*    DepthStencilState;
+        ID3D10ShaderResourceView*   PSShaderResource;
+        ID3D10SamplerState*         PSSampler;
+        ID3D10PixelShader*          PS;
+        ID3D10VertexShader*         VS;
+        ID3D10GeometryShader*       GS;
+        D3D10_PRIMITIVE_TOPOLOGY    PrimitiveTopology;
+        ID3D10Buffer*               IndexBuffer, *VertexBuffer, *VSConstantBuffer;
+        UINT                        IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
+        DXGI_FORMAT                 IndexBufferFormat;
+        ID3D10InputLayout*          InputLayout;
+    };
+    BACKUP_DX10_STATE old;
+    old.ScissorRectsCount = old.ViewportsCount = D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
+    ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
+    ctx->RSGetState(&old.RS);
+    ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
+    ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef);
+    ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
+    ctx->PSGetSamplers(0, 1, &old.PSSampler);
+    ctx->PSGetShader(&old.PS);
+    ctx->VSGetShader(&old.VS);
+    ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
+    ctx->GSGetShader(&old.GS);
+    ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
+    ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
+    ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
+    ctx->IAGetInputLayout(&old.InputLayout);
+
+    // Setup desired DX state
+    ImGui_ImplDX10_SetupRenderState(draw_data, ctx);
+
+    // Render command lists
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX10_SetupRenderState(draw_data, ctx);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                // Apply scissor/clipping rectangle
+                const D3D10_RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y)};
+                ctx->RSSetScissorRects(1, &r);
+
+                // Bind texture, Draw
+                ID3D10ShaderResourceView* texture_srv = (ID3D10ShaderResourceView*)pcmd->TextureId;
+                ctx->PSSetShaderResources(0, 1, &texture_srv);
+                ctx->DrawIndexed(pcmd->ElemCount, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset);
+            }
+        }
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
+    }
+
+    // Restore modified DX state
+    ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
+    ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
+    ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
+    ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release();
+    ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
+    ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
+    ctx->PSSetShader(old.PS); if (old.PS) old.PS->Release();
+    ctx->VSSetShader(old.VS); if (old.VS) old.VS->Release();
+    ctx->GSSetShader(old.GS); if (old.GS) old.GS->Release();
+    ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
+    ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
+    ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
+    ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
+    ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
+}
+
+static void ImGui_ImplDX10_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Upload texture to graphics system
+    {
+        D3D10_TEXTURE2D_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Width = width;
+        desc.Height = height;
+        desc.MipLevels = 1;
+        desc.ArraySize = 1;
+        desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        desc.SampleDesc.Count = 1;
+        desc.Usage = D3D10_USAGE_DEFAULT;
+        desc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
+        desc.CPUAccessFlags = 0;
+
+        ID3D10Texture2D *pTexture = NULL;
+        D3D10_SUBRESOURCE_DATA subResource;
+        subResource.pSysMem = pixels;
+        subResource.SysMemPitch = desc.Width * 4;
+        subResource.SysMemSlicePitch = 0;
+        g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
+
+        // Create texture view
+        D3D10_SHADER_RESOURCE_VIEW_DESC srv_desc;
+        ZeroMemory(&srv_desc, sizeof(srv_desc));
+        srv_desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        srv_desc.ViewDimension = D3D10_SRV_DIMENSION_TEXTURE2D;
+        srv_desc.Texture2D.MipLevels = desc.MipLevels;
+        srv_desc.Texture2D.MostDetailedMip = 0;
+        g_pd3dDevice->CreateShaderResourceView(pTexture, &srv_desc, &g_pFontTextureView);
+        pTexture->Release();
+    }
+
+    // Store our identifier
+    io.Fonts->TexID = (ImTextureID)g_pFontTextureView;
+
+    // Create texture sampler
+    {
+        D3D10_SAMPLER_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Filter = D3D10_FILTER_MIN_MAG_MIP_LINEAR;
+        desc.AddressU = D3D10_TEXTURE_ADDRESS_WRAP;
+        desc.AddressV = D3D10_TEXTURE_ADDRESS_WRAP;
+        desc.AddressW = D3D10_TEXTURE_ADDRESS_WRAP;
+        desc.MipLODBias = 0.f;
+        desc.ComparisonFunc = D3D10_COMPARISON_ALWAYS;
+        desc.MinLOD = 0.f;
+        desc.MaxLOD = 0.f;
+        g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler);
+    }
+}
+
+bool    ImGui_ImplDX10_CreateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return false;
+    if (g_pFontSampler)
+        ImGui_ImplDX10_InvalidateDeviceObjects();
+
+    // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
+    // If you would like to use this DX10 sample code but remove this dependency you can:
+    //  1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
+    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
+    // See https://github.com/ocornut/imgui/pull/638 for sources and details.
+
+    // Create the vertex shader
+    {
+        static const char* vertexShader =
+            "cbuffer vertexBuffer : register(b0) \
+            {\
+            float4x4 ProjectionMatrix; \
+            };\
+            struct VS_INPUT\
+            {\
+            float2 pos : POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            \
+            struct PS_INPUT\
+            {\
+            float4 pos : SV_POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            \
+            PS_INPUT main(VS_INPUT input)\
+            {\
+            PS_INPUT output;\
+            output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+            output.col = input.col;\
+            output.uv  = input.uv;\
+            return output;\
+            }";
+
+        D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_4_0", 0, 0, &g_pVertexShaderBlob, NULL);
+        if (g_pVertexShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pVertexShader) != S_OK)
+            return false;
+
+        // Create the input layout
+        D3D10_INPUT_ELEMENT_DESC local_layout[] =
+        {
+            { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->pos), D3D10_INPUT_PER_VERTEX_DATA, 0 },
+            { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->uv),  D3D10_INPUT_PER_VERTEX_DATA, 0 },
+            { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D10_INPUT_PER_VERTEX_DATA, 0 },
+        };
+        if (g_pd3dDevice->CreateInputLayout(local_layout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
+            return false;
+
+        // Create the constant buffer
+        {
+            D3D10_BUFFER_DESC desc;
+            desc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
+            desc.Usage = D3D10_USAGE_DYNAMIC;
+            desc.BindFlags = D3D10_BIND_CONSTANT_BUFFER;
+            desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
+            desc.MiscFlags = 0;
+            g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVertexConstantBuffer);
+        }
+    }
+
+    // Create the pixel shader
+    {
+        static const char* pixelShader =
+            "struct PS_INPUT\
+            {\
+            float4 pos : SV_POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            sampler sampler0;\
+            Texture2D texture0;\
+            \
+            float4 main(PS_INPUT input) : SV_Target\
+            {\
+            float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
+            return out_col; \
+            }";
+
+        D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_4_0", 0, 0, &g_pPixelShaderBlob, NULL);
+        if (g_pPixelShaderBlob == NULL)  // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), &g_pPixelShader) != S_OK)
+            return false;
+    }
+
+    // Create the blending setup
+    {
+        D3D10_BLEND_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.AlphaToCoverageEnable = false;
+        desc.BlendEnable[0] = true;
+        desc.SrcBlend = D3D10_BLEND_SRC_ALPHA;
+        desc.DestBlend = D3D10_BLEND_INV_SRC_ALPHA;
+        desc.BlendOp = D3D10_BLEND_OP_ADD;
+        desc.SrcBlendAlpha = D3D10_BLEND_INV_SRC_ALPHA;
+        desc.DestBlendAlpha = D3D10_BLEND_ZERO;
+        desc.BlendOpAlpha = D3D10_BLEND_OP_ADD;
+        desc.RenderTargetWriteMask[0] = D3D10_COLOR_WRITE_ENABLE_ALL;
+        g_pd3dDevice->CreateBlendState(&desc, &g_pBlendState);
+    }
+
+    // Create the rasterizer state
+    {
+        D3D10_RASTERIZER_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.FillMode = D3D10_FILL_SOLID;
+        desc.CullMode = D3D10_CULL_NONE;
+        desc.ScissorEnable = true;
+        desc.DepthClipEnable = true;
+        g_pd3dDevice->CreateRasterizerState(&desc, &g_pRasterizerState);
+    }
+
+    // Create depth-stencil State
+    {
+        D3D10_DEPTH_STENCIL_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.DepthEnable = false;
+        desc.DepthWriteMask = D3D10_DEPTH_WRITE_MASK_ALL;
+        desc.DepthFunc = D3D10_COMPARISON_ALWAYS;
+        desc.StencilEnable = false;
+        desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D10_STENCIL_OP_KEEP;
+        desc.FrontFace.StencilFunc = D3D10_COMPARISON_ALWAYS;
+        desc.BackFace = desc.FrontFace;
+        g_pd3dDevice->CreateDepthStencilState(&desc, &g_pDepthStencilState);
+    }
+
+    ImGui_ImplDX10_CreateFontsTexture();
+
+    return true;
+}
+
+void    ImGui_ImplDX10_InvalidateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return;
+
+    if (g_pFontSampler) { g_pFontSampler->Release(); g_pFontSampler = NULL; }
+    if (g_pFontTextureView) { g_pFontTextureView->Release(); g_pFontTextureView = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+    if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+
+    if (g_pBlendState) { g_pBlendState->Release(); g_pBlendState = NULL; }
+    if (g_pDepthStencilState) { g_pDepthStencilState->Release(); g_pDepthStencilState = NULL; }
+    if (g_pRasterizerState) { g_pRasterizerState->Release(); g_pRasterizerState = NULL; }
+    if (g_pPixelShader) { g_pPixelShader->Release(); g_pPixelShader = NULL; }
+    if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; }
+    if (g_pVertexConstantBuffer) { g_pVertexConstantBuffer->Release(); g_pVertexConstantBuffer = NULL; }
+    if (g_pInputLayout) { g_pInputLayout->Release(); g_pInputLayout = NULL; }
+    if (g_pVertexShader) { g_pVertexShader->Release(); g_pVertexShader = NULL; }
+    if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
+}
+
+bool    ImGui_ImplDX10_Init(ID3D10Device* device)
+{
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx10";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
+    // Get factory from device
+    IDXGIDevice* pDXGIDevice = NULL;
+    IDXGIAdapter* pDXGIAdapter = NULL;
+    IDXGIFactory* pFactory = NULL;
+
+    if (device->QueryInterface(IID_PPV_ARGS(&pDXGIDevice)) == S_OK)
+        if (pDXGIDevice->GetParent(IID_PPV_ARGS(&pDXGIAdapter)) == S_OK)
+            if (pDXGIAdapter->GetParent(IID_PPV_ARGS(&pFactory)) == S_OK)
+            {
+                g_pd3dDevice = device;
+                g_pFactory = pFactory;
+            }
+    if (pDXGIDevice) pDXGIDevice->Release();
+    if (pDXGIAdapter) pDXGIAdapter->Release();
+    g_pd3dDevice->AddRef();
+
+    return true;
+}
+
+void ImGui_ImplDX10_Shutdown()
+{
+    ImGui_ImplDX10_InvalidateDeviceObjects();
+    if (g_pFactory) { g_pFactory->Release(); g_pFactory = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+void ImGui_ImplDX10_NewFrame()
+{
+    if (!g_pFontSampler)
+        ImGui_ImplDX10_CreateDeviceObjects();
+}

imgui-submodule/imgui/examples/imgui_impl_dx10.h

@@ -0,0 +1,23 @@
+// dear imgui: Renderer for DirectX10
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+
+struct ID3D10Device;
+
+IMGUI_IMPL_API bool     ImGui_ImplDX10_Init(ID3D10Device* device);
+IMGUI_IMPL_API void     ImGui_ImplDX10_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplDX10_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_IMPL_API void     ImGui_ImplDX10_InvalidateDeviceObjects();
+IMGUI_IMPL_API bool     ImGui_ImplDX10_CreateDeviceObjects();

imgui-submodule/imgui/examples/imgui_impl_dx11.cpp

@@ -0,0 +1,544 @@
+// dear imgui: Renderer for DirectX11
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-08-01: DirectX11: Fixed code querying the Geometry Shader state (would generally error with Debug layer enabled).
+//  2019-07-21: DirectX11: Backup, clear and restore Geometry Shader is any is bound when calling ImGui_ImplDX10_RenderDrawData. Clearing Hull/Domain/Compute shaders without backup/restore.
+//  2019-05-29: DirectX11: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX11: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-08-01: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility.
+//  2018-07-13: DirectX11: Fixed unreleased resources in Init and Shutdown functions.
+//  2018-06-08: Misc: Extracted imgui_impl_dx11.cpp/.h away from the old combined DX11+Win32 example.
+//  2018-06-08: DirectX11: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX11_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+//  2016-05-07: DirectX11: Disabling depth-write.
+
+#include "imgui.h"
+#include "imgui_impl_dx11.h"
+
+// DirectX
+#include <stdio.h>
+#include <d3d11.h>
+#include <d3dcompiler.h>
+#ifdef _MSC_VER
+#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
+#endif
+
+// DirectX data
+static ID3D11Device*            g_pd3dDevice = NULL;
+static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
+static IDXGIFactory*            g_pFactory = NULL;
+static ID3D11Buffer*            g_pVB = NULL;
+static ID3D11Buffer*            g_pIB = NULL;
+static ID3D10Blob*              g_pVertexShaderBlob = NULL;
+static ID3D11VertexShader*      g_pVertexShader = NULL;
+static ID3D11InputLayout*       g_pInputLayout = NULL;
+static ID3D11Buffer*            g_pVertexConstantBuffer = NULL;
+static ID3D10Blob*              g_pPixelShaderBlob = NULL;
+static ID3D11PixelShader*       g_pPixelShader = NULL;
+static ID3D11SamplerState*      g_pFontSampler = NULL;
+static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
+static ID3D11RasterizerState*   g_pRasterizerState = NULL;
+static ID3D11BlendState*        g_pBlendState = NULL;
+static ID3D11DepthStencilState* g_pDepthStencilState = NULL;
+static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
+
+struct VERTEX_CONSTANT_BUFFER
+{
+    float   mvp[4][4];
+};
+
+static void ImGui_ImplDX11_SetupRenderState(ImDrawData* draw_data, ID3D11DeviceContext* ctx)
+{
+    // Setup viewport
+    D3D11_VIEWPORT vp;
+    memset(&vp, 0, sizeof(D3D11_VIEWPORT));
+    vp.Width = draw_data->DisplaySize.x;
+    vp.Height = draw_data->DisplaySize.y;
+    vp.MinDepth = 0.0f;
+    vp.MaxDepth = 1.0f;
+    vp.TopLeftX = vp.TopLeftY = 0;
+    ctx->RSSetViewports(1, &vp);
+
+    // Setup shader and vertex buffers
+    unsigned int stride = sizeof(ImDrawVert);
+    unsigned int offset = 0;
+    ctx->IASetInputLayout(g_pInputLayout);
+    ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
+    ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
+    ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    ctx->VSSetShader(g_pVertexShader, NULL, 0);
+    ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
+    ctx->PSSetShader(g_pPixelShader, NULL, 0);
+    ctx->PSSetSamplers(0, 1, &g_pFontSampler);
+    ctx->GSSetShader(NULL, NULL, 0);
+    ctx->HSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
+    ctx->DSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
+    ctx->CSSetShader(NULL, NULL, 0); // In theory we should backup and restore this as well.. very infrequently used..
+
+    // Setup blend state
+    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
+    ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
+    ctx->RSSetState(g_pRasterizerState);
+}
+
+// Render function
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    ID3D11DeviceContext* ctx = g_pd3dDeviceContext;
+
+    // Create and grow vertex/index buffers if needed
+    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
+    {
+        if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        D3D11_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
+        desc.Usage = D3D11_USAGE_DYNAMIC;
+        desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert);
+        desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
+        desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+        desc.MiscFlags = 0;
+        if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVB) < 0)
+            return;
+    }
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        D3D11_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
+        desc.Usage = D3D11_USAGE_DYNAMIC;
+        desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx);
+        desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
+        desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+        if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pIB) < 0)
+            return;
+    }
+
+    // Upload vertex/index data into a single contiguous GPU buffer
+    D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
+    if (ctx->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
+        return;
+    if (ctx->Map(g_pIB, 0, D3D11_MAP_WRITE_DISCARD, 0, &idx_resource) != S_OK)
+        return;
+    ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource.pData;
+    ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource.pData;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
+        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+        vtx_dst += cmd_list->VtxBuffer.Size;
+        idx_dst += cmd_list->IdxBuffer.Size;
+    }
+    ctx->Unmap(g_pVB, 0);
+    ctx->Unmap(g_pIB, 0);
+
+    // Setup orthographic projection matrix into our constant buffer
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
+    {
+        D3D11_MAPPED_SUBRESOURCE mapped_resource;
+        if (ctx->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
+            return;
+        VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource.pData;
+        float L = draw_data->DisplayPos.x;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
+        float T = draw_data->DisplayPos.y;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
+        float mvp[4][4] =
+        {
+            { 2.0f/(R-L),   0.0f,           0.0f,       0.0f },
+            { 0.0f,         2.0f/(T-B),     0.0f,       0.0f },
+            { 0.0f,         0.0f,           0.5f,       0.0f },
+            { (R+L)/(L-R),  (T+B)/(B-T),    0.5f,       1.0f },
+        };
+        memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
+        ctx->Unmap(g_pVertexConstantBuffer, 0);
+    }
+
+    // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
+    struct BACKUP_DX11_STATE
+    {
+        UINT                        ScissorRectsCount, ViewportsCount;
+        D3D11_RECT                  ScissorRects[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        D3D11_VIEWPORT              Viewports[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        ID3D11RasterizerState*      RS;
+        ID3D11BlendState*           BlendState;
+        FLOAT                       BlendFactor[4];
+        UINT                        SampleMask;
+        UINT                        StencilRef;
+        ID3D11DepthStencilState*    DepthStencilState;
+        ID3D11ShaderResourceView*   PSShaderResource;
+        ID3D11SamplerState*         PSSampler;
+        ID3D11PixelShader*          PS;
+        ID3D11VertexShader*         VS;
+        ID3D11GeometryShader*       GS;
+        UINT                        PSInstancesCount, VSInstancesCount, GSInstancesCount;
+        ID3D11ClassInstance         *PSInstances[256], *VSInstances[256], *GSInstances[256];   // 256 is max according to PSSetShader documentation
+        D3D11_PRIMITIVE_TOPOLOGY    PrimitiveTopology;
+        ID3D11Buffer*               IndexBuffer, *VertexBuffer, *VSConstantBuffer;
+        UINT                        IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
+        DXGI_FORMAT                 IndexBufferFormat;
+        ID3D11InputLayout*          InputLayout;
+    };
+    BACKUP_DX11_STATE old;
+    old.ScissorRectsCount = old.ViewportsCount = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
+    ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
+    ctx->RSGetState(&old.RS);
+    ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
+    ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef);
+    ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
+    ctx->PSGetSamplers(0, 1, &old.PSSampler);
+    old.PSInstancesCount = old.VSInstancesCount = old.GSInstancesCount = 256;
+    ctx->PSGetShader(&old.PS, old.PSInstances, &old.PSInstancesCount);
+    ctx->VSGetShader(&old.VS, old.VSInstances, &old.VSInstancesCount);
+    ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
+    ctx->GSGetShader(&old.GS, old.GSInstances, &old.GSInstancesCount);
+
+    ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
+    ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
+    ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
+    ctx->IAGetInputLayout(&old.InputLayout);
+
+    // Setup desired DX state
+    ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
+
+    // Render command lists
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_idx_offset = 0;
+    int global_vtx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback != NULL)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                // Apply scissor/clipping rectangle
+                const D3D11_RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
+                ctx->RSSetScissorRects(1, &r);
+
+                // Bind texture, Draw
+                ID3D11ShaderResourceView* texture_srv = (ID3D11ShaderResourceView*)pcmd->TextureId;
+                ctx->PSSetShaderResources(0, 1, &texture_srv);
+                ctx->DrawIndexed(pcmd->ElemCount, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset);
+            }
+        }
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
+    }
+
+    // Restore modified DX state
+    ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
+    ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
+    ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
+    ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release();
+    ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
+    ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
+    ctx->PSSetShader(old.PS, old.PSInstances, old.PSInstancesCount); if (old.PS) old.PS->Release();
+    for (UINT i = 0; i < old.PSInstancesCount; i++) if (old.PSInstances[i]) old.PSInstances[i]->Release();
+    ctx->VSSetShader(old.VS, old.VSInstances, old.VSInstancesCount); if (old.VS) old.VS->Release();
+    ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
+    ctx->GSSetShader(old.GS, old.GSInstances, old.GSInstancesCount); if (old.GS) old.GS->Release();
+    for (UINT i = 0; i < old.VSInstancesCount; i++) if (old.VSInstances[i]) old.VSInstances[i]->Release();
+    ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
+    ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
+    ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
+    ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
+}
+
+static void ImGui_ImplDX11_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Upload texture to graphics system
+    {
+        D3D11_TEXTURE2D_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Width = width;
+        desc.Height = height;
+        desc.MipLevels = 1;
+        desc.ArraySize = 1;
+        desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        desc.SampleDesc.Count = 1;
+        desc.Usage = D3D11_USAGE_DEFAULT;
+        desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
+        desc.CPUAccessFlags = 0;
+
+        ID3D11Texture2D *pTexture = NULL;
+        D3D11_SUBRESOURCE_DATA subResource;
+        subResource.pSysMem = pixels;
+        subResource.SysMemPitch = desc.Width * 4;
+        subResource.SysMemSlicePitch = 0;
+        g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
+
+        // Create texture view
+        D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
+        ZeroMemory(&srvDesc, sizeof(srvDesc));
+        srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
+        srvDesc.Texture2D.MipLevels = desc.MipLevels;
+        srvDesc.Texture2D.MostDetailedMip = 0;
+        g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
+        pTexture->Release();
+    }
+
+    // Store our identifier
+    io.Fonts->TexID = (ImTextureID)g_pFontTextureView;
+
+    // Create texture sampler
+    {
+        D3D11_SAMPLER_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
+        desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
+        desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
+        desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
+        desc.MipLODBias = 0.f;
+        desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
+        desc.MinLOD = 0.f;
+        desc.MaxLOD = 0.f;
+        g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler);
+    }
+}
+
+bool    ImGui_ImplDX11_CreateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return false;
+    if (g_pFontSampler)
+        ImGui_ImplDX11_InvalidateDeviceObjects();
+
+    // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
+    // If you would like to use this DX11 sample code but remove this dependency you can:
+    //  1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
+    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
+    // See https://github.com/ocornut/imgui/pull/638 for sources and details.
+
+    // Create the vertex shader
+    {
+        static const char* vertexShader =
+            "cbuffer vertexBuffer : register(b0) \
+            {\
+            float4x4 ProjectionMatrix; \
+            };\
+            struct VS_INPUT\
+            {\
+            float2 pos : POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            \
+            struct PS_INPUT\
+            {\
+            float4 pos : SV_POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            \
+            PS_INPUT main(VS_INPUT input)\
+            {\
+            PS_INPUT output;\
+            output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+            output.col = input.col;\
+            output.uv  = input.uv;\
+            return output;\
+            }";
+
+        D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_4_0", 0, 0, &g_pVertexShaderBlob, NULL);
+        if (g_pVertexShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), NULL, &g_pVertexShader) != S_OK)
+            return false;
+
+        // Create the input layout
+        D3D11_INPUT_ELEMENT_DESC local_layout[] =
+        {
+            { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
+            { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->uv),  D3D11_INPUT_PER_VERTEX_DATA, 0 },
+            { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
+        };
+        if (g_pd3dDevice->CreateInputLayout(local_layout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
+            return false;
+
+        // Create the constant buffer
+        {
+            D3D11_BUFFER_DESC desc;
+            desc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
+            desc.Usage = D3D11_USAGE_DYNAMIC;
+            desc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
+            desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+            desc.MiscFlags = 0;
+            g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVertexConstantBuffer);
+        }
+    }
+
+    // Create the pixel shader
+    {
+        static const char* pixelShader =
+            "struct PS_INPUT\
+            {\
+            float4 pos : SV_POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            sampler sampler0;\
+            Texture2D texture0;\
+            \
+            float4 main(PS_INPUT input) : SV_Target\
+            {\
+            float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
+            return out_col; \
+            }";
+
+        D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_4_0", 0, 0, &g_pPixelShaderBlob, NULL);
+        if (g_pPixelShaderBlob == NULL)  // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), NULL, &g_pPixelShader) != S_OK)
+            return false;
+    }
+
+    // Create the blending setup
+    {
+        D3D11_BLEND_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.AlphaToCoverageEnable = false;
+        desc.RenderTarget[0].BlendEnable = true;
+        desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
+        desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
+        desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
+        desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
+        desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
+        desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
+        desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
+        g_pd3dDevice->CreateBlendState(&desc, &g_pBlendState);
+    }
+
+    // Create the rasterizer state
+    {
+        D3D11_RASTERIZER_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.FillMode = D3D11_FILL_SOLID;
+        desc.CullMode = D3D11_CULL_NONE;
+        desc.ScissorEnable = true;
+        desc.DepthClipEnable = true;
+        g_pd3dDevice->CreateRasterizerState(&desc, &g_pRasterizerState);
+    }
+
+    // Create depth-stencil State
+    {
+        D3D11_DEPTH_STENCIL_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.DepthEnable = false;
+        desc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ALL;
+        desc.DepthFunc = D3D11_COMPARISON_ALWAYS;
+        desc.StencilEnable = false;
+        desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D11_STENCIL_OP_KEEP;
+        desc.FrontFace.StencilFunc = D3D11_COMPARISON_ALWAYS;
+        desc.BackFace = desc.FrontFace;
+        g_pd3dDevice->CreateDepthStencilState(&desc, &g_pDepthStencilState);
+    }
+
+    ImGui_ImplDX11_CreateFontsTexture();
+
+    return true;
+}
+
+void    ImGui_ImplDX11_InvalidateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return;
+
+    if (g_pFontSampler) { g_pFontSampler->Release(); g_pFontSampler = NULL; }
+    if (g_pFontTextureView) { g_pFontTextureView->Release(); g_pFontTextureView = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+    if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+
+    if (g_pBlendState) { g_pBlendState->Release(); g_pBlendState = NULL; }
+    if (g_pDepthStencilState) { g_pDepthStencilState->Release(); g_pDepthStencilState = NULL; }
+    if (g_pRasterizerState) { g_pRasterizerState->Release(); g_pRasterizerState = NULL; }
+    if (g_pPixelShader) { g_pPixelShader->Release(); g_pPixelShader = NULL; }
+    if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; }
+    if (g_pVertexConstantBuffer) { g_pVertexConstantBuffer->Release(); g_pVertexConstantBuffer = NULL; }
+    if (g_pInputLayout) { g_pInputLayout->Release(); g_pInputLayout = NULL; }
+    if (g_pVertexShader) { g_pVertexShader->Release(); g_pVertexShader = NULL; }
+    if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
+}
+
+bool    ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context)
+{
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx11";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
+    // Get factory from device
+    IDXGIDevice* pDXGIDevice = NULL;
+    IDXGIAdapter* pDXGIAdapter = NULL;
+    IDXGIFactory* pFactory = NULL;
+
+    if (device->QueryInterface(IID_PPV_ARGS(&pDXGIDevice)) == S_OK)
+        if (pDXGIDevice->GetParent(IID_PPV_ARGS(&pDXGIAdapter)) == S_OK)
+            if (pDXGIAdapter->GetParent(IID_PPV_ARGS(&pFactory)) == S_OK)
+            {
+                g_pd3dDevice = device;
+                g_pd3dDeviceContext = device_context;
+                g_pFactory = pFactory;
+            }
+    if (pDXGIDevice) pDXGIDevice->Release();
+    if (pDXGIAdapter) pDXGIAdapter->Release();
+    g_pd3dDevice->AddRef();
+    g_pd3dDeviceContext->AddRef();
+
+    return true;
+}
+
+void ImGui_ImplDX11_Shutdown()
+{
+    ImGui_ImplDX11_InvalidateDeviceObjects();
+    if (g_pFactory) { g_pFactory->Release(); g_pFactory = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
+}
+
+void ImGui_ImplDX11_NewFrame()
+{
+    if (!g_pFontSampler)
+        ImGui_ImplDX11_CreateDeviceObjects();
+}

imgui-submodule/imgui/examples/imgui_impl_dx11.h

@@ -0,0 +1,24 @@
+// dear imgui: Renderer for DirectX11
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+
+struct ID3D11Device;
+struct ID3D11DeviceContext;
+
+IMGUI_IMPL_API bool     ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context);
+IMGUI_IMPL_API void     ImGui_ImplDX11_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplDX11_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_IMPL_API void     ImGui_ImplDX11_InvalidateDeviceObjects();
+IMGUI_IMPL_API bool     ImGui_ImplDX11_CreateDeviceObjects();

imgui-submodule/imgui/examples/imgui_impl_dx12.cpp

@@ -0,0 +1,662 @@
+// dear imgui: Renderer for DirectX12
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+// Issues:
+//  [ ] 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*)). See github.com/ocornut/imgui/pull/301
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-10-18: DirectX12: *BREAKING CHANGE* Added extra ID3D12DescriptorHeap parameter to ImGui_ImplDX12_Init() function.
+//  2019-05-29: DirectX12: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX12: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: Misc: Various minor tidying up.
+//  2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-06-12: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from NewFrame() to RenderDrawData().
+//  2018-06-08: Misc: Extracted imgui_impl_dx12.cpp/.h away from the old combined DX12+Win32 example.
+//  2018-06-08: DirectX12: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle (to ease support for future multi-viewport).
+//  2018-02-22: Merged into master with all Win32 code synchronized to other examples.
+
+#include "imgui.h"
+#include "imgui_impl_dx12.h"
+
+// DirectX
+#include <d3d12.h>
+#include <dxgi1_4.h>
+#include <d3dcompiler.h>
+#ifdef _MSC_VER
+#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
+#endif
+
+// DirectX data
+static ID3D12Device*                g_pd3dDevice = NULL;
+static ID3D10Blob*                  g_pVertexShaderBlob = NULL;
+static ID3D10Blob*                  g_pPixelShaderBlob = NULL;
+static ID3D12RootSignature*         g_pRootSignature = NULL;
+static ID3D12PipelineState*         g_pPipelineState = NULL;
+static DXGI_FORMAT                  g_RTVFormat = DXGI_FORMAT_UNKNOWN;
+static ID3D12Resource*              g_pFontTextureResource = NULL;
+static D3D12_CPU_DESCRIPTOR_HANDLE  g_hFontSrvCpuDescHandle = {};
+static D3D12_GPU_DESCRIPTOR_HANDLE  g_hFontSrvGpuDescHandle = {};
+
+struct FrameResources
+{
+    ID3D12Resource*     IndexBuffer;
+    ID3D12Resource*     VertexBuffer;
+    int                 IndexBufferSize;
+    int                 VertexBufferSize;
+};
+static FrameResources*  g_pFrameResources = NULL;
+static UINT             g_numFramesInFlight = 0;
+static UINT             g_frameIndex = UINT_MAX;
+
+template<typename T>
+static void SafeRelease(T*& res)
+{
+    if (res)
+        res->Release();
+    res = NULL;
+}
+
+struct VERTEX_CONSTANT_BUFFER
+{
+    float   mvp[4][4];
+};
+
+static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx, FrameResources* fr)
+{
+    // Setup orthographic projection matrix into our constant buffer
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
+    VERTEX_CONSTANT_BUFFER vertex_constant_buffer;
+    {
+        float L = draw_data->DisplayPos.x;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
+        float T = draw_data->DisplayPos.y;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
+        float mvp[4][4] =
+        {
+            { 2.0f/(R-L),   0.0f,           0.0f,       0.0f },
+            { 0.0f,         2.0f/(T-B),     0.0f,       0.0f },
+            { 0.0f,         0.0f,           0.5f,       0.0f },
+            { (R+L)/(L-R),  (T+B)/(B-T),    0.5f,       1.0f },
+        };
+        memcpy(&vertex_constant_buffer.mvp, mvp, sizeof(mvp));
+    }
+
+    // Setup viewport
+    D3D12_VIEWPORT vp;
+    memset(&vp, 0, sizeof(D3D12_VIEWPORT));
+    vp.Width = draw_data->DisplaySize.x;
+    vp.Height = draw_data->DisplaySize.y;
+    vp.MinDepth = 0.0f;
+    vp.MaxDepth = 1.0f;
+    vp.TopLeftX = vp.TopLeftY = 0.0f;
+    ctx->RSSetViewports(1, &vp);
+
+    // Bind shader and vertex buffers
+    unsigned int stride = sizeof(ImDrawVert);
+    unsigned int offset = 0;
+    D3D12_VERTEX_BUFFER_VIEW vbv;
+    memset(&vbv, 0, sizeof(D3D12_VERTEX_BUFFER_VIEW));
+    vbv.BufferLocation = fr->VertexBuffer->GetGPUVirtualAddress() + offset;
+    vbv.SizeInBytes = fr->VertexBufferSize * stride;
+    vbv.StrideInBytes = stride;
+    ctx->IASetVertexBuffers(0, 1, &vbv);
+    D3D12_INDEX_BUFFER_VIEW ibv;
+    memset(&ibv, 0, sizeof(D3D12_INDEX_BUFFER_VIEW));
+    ibv.BufferLocation = fr->IndexBuffer->GetGPUVirtualAddress();
+    ibv.SizeInBytes = fr->IndexBufferSize * sizeof(ImDrawIdx);
+    ibv.Format = sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT;
+    ctx->IASetIndexBuffer(&ibv);
+    ctx->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    ctx->SetPipelineState(g_pPipelineState);
+    ctx->SetGraphicsRootSignature(g_pRootSignature);
+    ctx->SetGraphicsRoot32BitConstants(0, 16, &vertex_constant_buffer, 0);
+
+    // Setup blend factor
+    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    ctx->OMSetBlendFactor(blend_factor);
+}
+
+// Render function
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // FIXME: I'm assuming that this only gets called once per frame!
+    // If not, we can't just re-allocate the IB or VB, we'll have to do a proper allocator.
+    g_frameIndex = g_frameIndex + 1;
+    FrameResources* fr = &g_pFrameResources[g_frameIndex % g_numFramesInFlight];
+
+    // Create and grow vertex/index buffers if needed
+    if (fr->VertexBuffer == NULL || fr->VertexBufferSize < draw_data->TotalVtxCount)
+    {
+        SafeRelease(fr->VertexBuffer);
+        fr->VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        D3D12_HEAP_PROPERTIES props;
+        memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
+        props.Type = D3D12_HEAP_TYPE_UPLOAD;
+        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+        D3D12_RESOURCE_DESC desc;
+        memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
+        desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+        desc.Width = fr->VertexBufferSize * sizeof(ImDrawVert);
+        desc.Height = 1;
+        desc.DepthOrArraySize = 1;
+        desc.MipLevels = 1;
+        desc.Format = DXGI_FORMAT_UNKNOWN;
+        desc.SampleDesc.Count = 1;
+        desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
+        if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&fr->VertexBuffer)) < 0)
+            return;
+    }
+    if (fr->IndexBuffer == NULL || fr->IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        SafeRelease(fr->IndexBuffer);
+        fr->IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        D3D12_HEAP_PROPERTIES props;
+        memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
+        props.Type = D3D12_HEAP_TYPE_UPLOAD;
+        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+        D3D12_RESOURCE_DESC desc;
+        memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
+        desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+        desc.Width = fr->IndexBufferSize * sizeof(ImDrawIdx);
+        desc.Height = 1;
+        desc.DepthOrArraySize = 1;
+        desc.MipLevels = 1;
+        desc.Format = DXGI_FORMAT_UNKNOWN;
+        desc.SampleDesc.Count = 1;
+        desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
+        if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&fr->IndexBuffer)) < 0)
+            return;
+    }
+
+    // Upload vertex/index data into a single contiguous GPU buffer
+    void* vtx_resource, *idx_resource;
+    D3D12_RANGE range;
+    memset(&range, 0, sizeof(D3D12_RANGE));
+    if (fr->VertexBuffer->Map(0, &range, &vtx_resource) != S_OK)
+        return;
+    if (fr->IndexBuffer->Map(0, &range, &idx_resource) != S_OK)
+        return;
+    ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource;
+    ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
+        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+        vtx_dst += cmd_list->VtxBuffer.Size;
+        idx_dst += cmd_list->IdxBuffer.Size;
+    }
+    fr->VertexBuffer->Unmap(0, &range);
+    fr->IndexBuffer->Unmap(0, &range);
+
+    // Setup desired DX state
+    ImGui_ImplDX12_SetupRenderState(draw_data, ctx, fr);
+
+    // Render command lists
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback != NULL)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX12_SetupRenderState(draw_data, ctx, fr);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                // Apply Scissor, Bind texture, Draw
+                const D3D12_RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
+                ctx->SetGraphicsRootDescriptorTable(1, *(D3D12_GPU_DESCRIPTOR_HANDLE*)&pcmd->TextureId);
+                ctx->RSSetScissorRects(1, &r);
+                ctx->DrawIndexedInstanced(pcmd->ElemCount, 1, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset, 0);
+            }
+        }
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
+    }
+}
+
+static void ImGui_ImplDX12_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Upload texture to graphics system
+    {
+        D3D12_HEAP_PROPERTIES props;
+        memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
+        props.Type = D3D12_HEAP_TYPE_DEFAULT;
+        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+
+        D3D12_RESOURCE_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
+        desc.Alignment = 0;
+        desc.Width = width;
+        desc.Height = height;
+        desc.DepthOrArraySize = 1;
+        desc.MipLevels = 1;
+        desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        desc.SampleDesc.Count = 1;
+        desc.SampleDesc.Quality = 0;
+        desc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
+        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
+
+        ID3D12Resource* pTexture = NULL;
+        g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc,
+            D3D12_RESOURCE_STATE_COPY_DEST, NULL, IID_PPV_ARGS(&pTexture));
+
+        UINT uploadPitch = (width * 4 + D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u) & ~(D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u);
+        UINT uploadSize = height * uploadPitch;
+        desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+        desc.Alignment = 0;
+        desc.Width = uploadSize;
+        desc.Height = 1;
+        desc.DepthOrArraySize = 1;
+        desc.MipLevels = 1;
+        desc.Format = DXGI_FORMAT_UNKNOWN;
+        desc.SampleDesc.Count = 1;
+        desc.SampleDesc.Quality = 0;
+        desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
+
+        props.Type = D3D12_HEAP_TYPE_UPLOAD;
+        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+
+        ID3D12Resource* uploadBuffer = NULL;
+        HRESULT hr = g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc,
+            D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&uploadBuffer));
+        IM_ASSERT(SUCCEEDED(hr));
+
+        void* mapped = NULL;
+        D3D12_RANGE range = { 0, uploadSize };
+        hr = uploadBuffer->Map(0, &range, &mapped);
+        IM_ASSERT(SUCCEEDED(hr));
+        for (int y = 0; y < height; y++)
+            memcpy((void*) ((uintptr_t) mapped + y * uploadPitch), pixels + y * width * 4, width * 4);
+        uploadBuffer->Unmap(0, &range);
+
+        D3D12_TEXTURE_COPY_LOCATION srcLocation = {};
+        srcLocation.pResource = uploadBuffer;
+        srcLocation.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
+        srcLocation.PlacedFootprint.Footprint.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        srcLocation.PlacedFootprint.Footprint.Width = width;
+        srcLocation.PlacedFootprint.Footprint.Height = height;
+        srcLocation.PlacedFootprint.Footprint.Depth = 1;
+        srcLocation.PlacedFootprint.Footprint.RowPitch = uploadPitch;
+
+        D3D12_TEXTURE_COPY_LOCATION dstLocation = {};
+        dstLocation.pResource = pTexture;
+        dstLocation.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
+        dstLocation.SubresourceIndex = 0;
+
+        D3D12_RESOURCE_BARRIER barrier = {};
+        barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
+        barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
+        barrier.Transition.pResource   = pTexture;
+        barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
+        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_COPY_DEST;
+        barrier.Transition.StateAfter  = D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE;
+
+        ID3D12Fence* fence = NULL;
+        hr = g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&fence));
+        IM_ASSERT(SUCCEEDED(hr));
+
+        HANDLE event = CreateEvent(0, 0, 0, 0);
+        IM_ASSERT(event != NULL);
+
+        D3D12_COMMAND_QUEUE_DESC queueDesc = {};
+        queueDesc.Type     = D3D12_COMMAND_LIST_TYPE_DIRECT;
+        queueDesc.Flags    = D3D12_COMMAND_QUEUE_FLAG_NONE;
+        queueDesc.NodeMask = 1;
+
+        ID3D12CommandQueue* cmdQueue = NULL;
+        hr = g_pd3dDevice->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&cmdQueue));
+        IM_ASSERT(SUCCEEDED(hr));
+
+        ID3D12CommandAllocator* cmdAlloc = NULL;
+        hr = g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&cmdAlloc));
+        IM_ASSERT(SUCCEEDED(hr));
+
+        ID3D12GraphicsCommandList* cmdList = NULL;
+        hr = g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, cmdAlloc, NULL, IID_PPV_ARGS(&cmdList));
+        IM_ASSERT(SUCCEEDED(hr));
+
+        cmdList->CopyTextureRegion(&dstLocation, 0, 0, 0, &srcLocation, NULL);
+        cmdList->ResourceBarrier(1, &barrier);
+
+        hr = cmdList->Close();
+        IM_ASSERT(SUCCEEDED(hr));
+
+        cmdQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*) &cmdList);
+        hr = cmdQueue->Signal(fence, 1);
+        IM_ASSERT(SUCCEEDED(hr));
+
+        fence->SetEventOnCompletion(1, event);
+        WaitForSingleObject(event, INFINITE);
+
+        cmdList->Release();
+        cmdAlloc->Release();
+        cmdQueue->Release();
+        CloseHandle(event);
+        fence->Release();
+        uploadBuffer->Release();
+
+        // Create texture view
+        D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc;
+        ZeroMemory(&srvDesc, sizeof(srvDesc));
+        srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
+        srvDesc.Texture2D.MipLevels = desc.MipLevels;
+        srvDesc.Texture2D.MostDetailedMip = 0;
+        srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
+        g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, g_hFontSrvCpuDescHandle);
+        SafeRelease(g_pFontTextureResource);
+        g_pFontTextureResource = pTexture;
+    }
+
+    // Store our identifier
+    static_assert(sizeof(ImTextureID) >= sizeof(g_hFontSrvGpuDescHandle.ptr), "Can't pack descriptor handle into TexID, 32-bit not supported yet.");
+    io.Fonts->TexID = (ImTextureID)g_hFontSrvGpuDescHandle.ptr;
+}
+
+bool    ImGui_ImplDX12_CreateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return false;
+    if (g_pPipelineState)
+        ImGui_ImplDX12_InvalidateDeviceObjects();
+
+    // Create the root signature
+    {
+        D3D12_DESCRIPTOR_RANGE descRange = {};
+        descRange.RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
+        descRange.NumDescriptors = 1;
+        descRange.BaseShaderRegister = 0;
+        descRange.RegisterSpace = 0;
+        descRange.OffsetInDescriptorsFromTableStart = 0;
+
+        D3D12_ROOT_PARAMETER param[2] = {};
+
+        param[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;
+        param[0].Constants.ShaderRegister = 0;
+        param[0].Constants.RegisterSpace = 0;
+        param[0].Constants.Num32BitValues = 16;
+        param[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
+
+        param[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
+        param[1].DescriptorTable.NumDescriptorRanges = 1;
+        param[1].DescriptorTable.pDescriptorRanges = &descRange;
+        param[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
+
+        D3D12_STATIC_SAMPLER_DESC staticSampler = {};
+        staticSampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
+        staticSampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
+        staticSampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
+        staticSampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
+        staticSampler.MipLODBias = 0.f;
+        staticSampler.MaxAnisotropy = 0;
+        staticSampler.ComparisonFunc = D3D12_COMPARISON_FUNC_ALWAYS;
+        staticSampler.BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK;
+        staticSampler.MinLOD = 0.f;
+        staticSampler.MaxLOD = 0.f;
+        staticSampler.ShaderRegister = 0;
+        staticSampler.RegisterSpace = 0;
+        staticSampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
+
+        D3D12_ROOT_SIGNATURE_DESC desc = {};
+        desc.NumParameters = _countof(param);
+        desc.pParameters = param;
+        desc.NumStaticSamplers = 1;
+        desc.pStaticSamplers = &staticSampler;
+        desc.Flags =
+            D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
+            D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
+            D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
+            D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS;
+
+        ID3DBlob* blob = NULL;
+        if (D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &blob, NULL) != S_OK)
+            return false;
+
+        g_pd3dDevice->CreateRootSignature(0, blob->GetBufferPointer(), blob->GetBufferSize(), IID_PPV_ARGS(&g_pRootSignature));
+        blob->Release();
+    }
+
+    // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
+    // If you would like to use this DX12 sample code but remove this dependency you can:
+    //  1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
+    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
+    // See https://github.com/ocornut/imgui/pull/638 for sources and details.
+
+    D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc;
+    memset(&psoDesc, 0, sizeof(D3D12_GRAPHICS_PIPELINE_STATE_DESC));
+    psoDesc.NodeMask = 1;
+    psoDesc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
+    psoDesc.pRootSignature = g_pRootSignature;
+    psoDesc.SampleMask = UINT_MAX;
+    psoDesc.NumRenderTargets = 1;
+    psoDesc.RTVFormats[0] = g_RTVFormat;
+    psoDesc.SampleDesc.Count = 1;
+    psoDesc.Flags = D3D12_PIPELINE_STATE_FLAG_NONE;
+
+    // Create the vertex shader
+    {
+        static const char* vertexShader =
+            "cbuffer vertexBuffer : register(b0) \
+            {\
+              float4x4 ProjectionMatrix; \
+            };\
+            struct VS_INPUT\
+            {\
+              float2 pos : POSITION;\
+              float4 col : COLOR0;\
+              float2 uv  : TEXCOORD0;\
+            };\
+            \
+            struct PS_INPUT\
+            {\
+              float4 pos : SV_POSITION;\
+              float4 col : COLOR0;\
+              float2 uv  : TEXCOORD0;\
+            };\
+            \
+            PS_INPUT main(VS_INPUT input)\
+            {\
+              PS_INPUT output;\
+              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+              output.col = input.col;\
+              output.uv  = input.uv;\
+              return output;\
+            }";
+
+        D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_5_0", 0, 0, &g_pVertexShaderBlob, NULL);
+        if (g_pVertexShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        psoDesc.VS = { g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize() };
+
+        // Create the input layout
+        static D3D12_INPUT_ELEMENT_DESC local_layout[] = {
+            { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (UINT)IM_OFFSETOF(ImDrawVert, pos), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+            { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (UINT)IM_OFFSETOF(ImDrawVert, uv),  D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+            { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (UINT)IM_OFFSETOF(ImDrawVert, col), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+        };
+        psoDesc.InputLayout = { local_layout, 3 };
+    }
+
+    // Create the pixel shader
+    {
+        static const char* pixelShader =
+            "struct PS_INPUT\
+            {\
+              float4 pos : SV_POSITION;\
+              float4 col : COLOR0;\
+              float2 uv  : TEXCOORD0;\
+            };\
+            SamplerState sampler0 : register(s0);\
+            Texture2D texture0 : register(t0);\
+            \
+            float4 main(PS_INPUT input) : SV_Target\
+            {\
+              float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
+              return out_col; \
+            }";
+
+        D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_5_0", 0, 0, &g_pPixelShaderBlob, NULL);
+        if (g_pPixelShaderBlob == NULL)  // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        psoDesc.PS = { g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize() };
+    }
+
+    // Create the blending setup
+    {
+        D3D12_BLEND_DESC& desc = psoDesc.BlendState;
+        desc.AlphaToCoverageEnable = false;
+        desc.RenderTarget[0].BlendEnable = true;
+        desc.RenderTarget[0].SrcBlend = D3D12_BLEND_SRC_ALPHA;
+        desc.RenderTarget[0].DestBlend = D3D12_BLEND_INV_SRC_ALPHA;
+        desc.RenderTarget[0].BlendOp = D3D12_BLEND_OP_ADD;
+        desc.RenderTarget[0].SrcBlendAlpha = D3D12_BLEND_INV_SRC_ALPHA;
+        desc.RenderTarget[0].DestBlendAlpha = D3D12_BLEND_ZERO;
+        desc.RenderTarget[0].BlendOpAlpha = D3D12_BLEND_OP_ADD;
+        desc.RenderTarget[0].RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
+    }
+
+    // Create the rasterizer state
+    {
+        D3D12_RASTERIZER_DESC& desc = psoDesc.RasterizerState;
+        desc.FillMode = D3D12_FILL_MODE_SOLID;
+        desc.CullMode = D3D12_CULL_MODE_NONE;
+        desc.FrontCounterClockwise = FALSE;
+        desc.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
+        desc.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
+        desc.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
+        desc.DepthClipEnable = true;
+        desc.MultisampleEnable = FALSE;
+        desc.AntialiasedLineEnable = FALSE;
+        desc.ForcedSampleCount = 0;
+        desc.ConservativeRaster = D3D12_CONSERVATIVE_RASTERIZATION_MODE_OFF;
+    }
+
+    // Create depth-stencil State
+    {
+        D3D12_DEPTH_STENCIL_DESC& desc = psoDesc.DepthStencilState;
+        desc.DepthEnable = false;
+        desc.DepthWriteMask = D3D12_DEPTH_WRITE_MASK_ALL;
+        desc.DepthFunc = D3D12_COMPARISON_FUNC_ALWAYS;
+        desc.StencilEnable = false;
+        desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D12_STENCIL_OP_KEEP;
+        desc.FrontFace.StencilFunc = D3D12_COMPARISON_FUNC_ALWAYS;
+        desc.BackFace = desc.FrontFace;
+    }
+
+    if (g_pd3dDevice->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&g_pPipelineState)) != S_OK)
+        return false;
+
+    ImGui_ImplDX12_CreateFontsTexture();
+
+    return true;
+}
+
+void    ImGui_ImplDX12_InvalidateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return;
+
+    SafeRelease(g_pVertexShaderBlob);
+    SafeRelease(g_pPixelShaderBlob);
+    SafeRelease(g_pRootSignature);
+    SafeRelease(g_pPipelineState);
+    SafeRelease(g_pFontTextureResource);
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.Fonts->TexID = NULL; // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+
+    for (UINT i = 0; i < g_numFramesInFlight; i++)
+    {
+        FrameResources* fr = &g_pFrameResources[i];
+        SafeRelease(fr->IndexBuffer);
+        SafeRelease(fr->VertexBuffer);
+    }
+}
+
+bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
+                         D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle)
+{
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx12";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
+    g_pd3dDevice = device;
+    g_RTVFormat = rtv_format;
+    g_hFontSrvCpuDescHandle = font_srv_cpu_desc_handle;
+    g_hFontSrvGpuDescHandle = font_srv_gpu_desc_handle;
+    g_pFrameResources = new FrameResources[num_frames_in_flight];
+    g_numFramesInFlight = num_frames_in_flight;
+    g_frameIndex = UINT_MAX;
+    IM_UNUSED(cbv_srv_heap); // Unused in master branch (will be used by multi-viewports)
+
+    // Create buffers with a default size (they will later be grown as needed)
+    for (int i = 0; i < num_frames_in_flight; i++)
+    {
+        FrameResources* fr = &g_pFrameResources[i];
+        fr->IndexBuffer = NULL;
+        fr->VertexBuffer = NULL;
+        fr->IndexBufferSize = 10000;
+        fr->VertexBufferSize = 5000;
+    }
+
+    return true;
+}
+
+void ImGui_ImplDX12_Shutdown()
+{
+    ImGui_ImplDX12_InvalidateDeviceObjects();
+    delete[] g_pFrameResources;
+    g_pFrameResources = NULL;
+    g_pd3dDevice = NULL;
+    g_hFontSrvCpuDescHandle.ptr = 0;
+    g_hFontSrvGpuDescHandle.ptr = 0;
+    g_numFramesInFlight = 0;
+    g_frameIndex = UINT_MAX;
+}
+
+void ImGui_ImplDX12_NewFrame()
+{
+    if (!g_pPipelineState)
+        ImGui_ImplDX12_CreateDeviceObjects();
+}

imgui-submodule/imgui/examples/imgui_impl_dx12.h

@@ -0,0 +1,35 @@
+// dear imgui: Renderer for DirectX12
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+// Issues:
+//  [ ] 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*)). See github.com/ocornut/imgui/pull/301
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+
+enum DXGI_FORMAT;
+struct ID3D12Device;
+struct ID3D12DescriptorHeap;
+struct ID3D12GraphicsCommandList;
+struct D3D12_CPU_DESCRIPTOR_HANDLE;
+struct D3D12_GPU_DESCRIPTOR_HANDLE;
+
+// cmd_list is the command list that the implementation will use to render imgui draw lists.
+// Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
+// render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.
+// font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture.
+IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
+                                            D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle);
+IMGUI_IMPL_API void     ImGui_ImplDX12_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplDX12_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* graphics_command_list);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_IMPL_API void     ImGui_ImplDX12_InvalidateDeviceObjects();
+IMGUI_IMPL_API bool     ImGui_ImplDX12_CreateDeviceObjects();

imgui-submodule/imgui/examples/imgui_impl_dx9.cpp

@@ -0,0 +1,284 @@
+// dear imgui: Renderer for DirectX9
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: DirectX9: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX9: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: Misc: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects().
+//  2019-01-16: Misc: Disabled fog before drawing UI's. Fixes issue #2288.
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-06-08: Misc: Extracted imgui_impl_dx9.cpp/.h away from the old combined DX9+Win32 example.
+//  2018-06-08: DirectX9: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
+//  2018-05-07: Render: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX9_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+
+#include "imgui.h"
+#include "imgui_impl_dx9.h"
+
+// DirectX
+#include <d3d9.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+
+// DirectX data
+static LPDIRECT3DDEVICE9        g_pd3dDevice = NULL;
+static LPDIRECT3DVERTEXBUFFER9  g_pVB = NULL;
+static LPDIRECT3DINDEXBUFFER9   g_pIB = NULL;
+static LPDIRECT3DTEXTURE9       g_FontTexture = NULL;
+static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
+
+struct CUSTOMVERTEX
+{
+    float    pos[3];
+    D3DCOLOR col;
+    float    uv[2];
+};
+#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
+
+static void ImGui_ImplDX9_SetupRenderState(ImDrawData* draw_data)
+{
+    // Setup viewport
+    D3DVIEWPORT9 vp;
+    vp.X = vp.Y = 0;
+    vp.Width = (DWORD)draw_data->DisplaySize.x;
+    vp.Height = (DWORD)draw_data->DisplaySize.y;
+    vp.MinZ = 0.0f;
+    vp.MaxZ = 1.0f;
+    g_pd3dDevice->SetViewport(&vp);
+
+    // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing, shade mode (for gradient)
+    g_pd3dDevice->SetPixelShader(NULL);
+    g_pd3dDevice->SetVertexShader(NULL);
+    g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
+    g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, FALSE);
+    g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, FALSE);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, FALSE);
+    g_pd3dDevice->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);
+    g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, TRUE);
+    g_pd3dDevice->SetRenderState(D3DRS_SHADEMODE, D3DSHADE_GOURAUD);
+    g_pd3dDevice->SetRenderState(D3DRS_FOGENABLE, FALSE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
+
+    // Setup orthographic projection matrix
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
+    // Being agnostic of whether <d3dx9.h> or <DirectXMath.h> can be used, we aren't relying on D3DXMatrixIdentity()/D3DXMatrixOrthoOffCenterLH() or DirectX::XMMatrixIdentity()/DirectX::XMMatrixOrthographicOffCenterLH()
+    {
+        float L = draw_data->DisplayPos.x + 0.5f;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x + 0.5f;
+        float T = draw_data->DisplayPos.y + 0.5f;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y + 0.5f;
+        D3DMATRIX mat_identity = { { { 1.0f, 0.0f, 0.0f, 0.0f,  0.0f, 1.0f, 0.0f, 0.0f,  0.0f, 0.0f, 1.0f, 0.0f,  0.0f, 0.0f, 0.0f, 1.0f } } };
+        D3DMATRIX mat_projection =
+        { { {
+            2.0f/(R-L),   0.0f,         0.0f,  0.0f,
+            0.0f,         2.0f/(T-B),   0.0f,  0.0f,
+            0.0f,         0.0f,         0.5f,  0.0f,
+            (L+R)/(L-R),  (T+B)/(B-T),  0.5f,  1.0f
+        } } };
+        g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat_projection);
+    }
+}
+
+// Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // Create and grow buffers if needed
+    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
+    {
+        if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        if (g_pd3dDevice->CreateVertexBuffer(g_VertexBufferSize * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
+            return;
+    }
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        if (g_pd3dDevice->CreateIndexBuffer(g_IndexBufferSize * sizeof(ImDrawIdx), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, sizeof(ImDrawIdx) == 2 ? D3DFMT_INDEX16 : D3DFMT_INDEX32, D3DPOOL_DEFAULT, &g_pIB, NULL) < 0)
+            return;
+    }
+
+    // Backup the DX9 state
+    IDirect3DStateBlock9* d3d9_state_block = NULL;
+    if (g_pd3dDevice->CreateStateBlock(D3DSBT_ALL, &d3d9_state_block) < 0)
+        return;
+
+    // Backup the DX9 transform (DX9 documentation suggests that it is included in the StateBlock but it doesn't appear to)
+    D3DMATRIX last_world, last_view, last_projection;
+    g_pd3dDevice->GetTransform(D3DTS_WORLD, &last_world);
+    g_pd3dDevice->GetTransform(D3DTS_VIEW, &last_view);
+    g_pd3dDevice->GetTransform(D3DTS_PROJECTION, &last_projection);
+
+    // Copy and convert all vertices into a single contiguous buffer, convert colors to DX9 default format.
+    // FIXME-OPT: This is a waste of resource, the ideal is to use imconfig.h and
+    //  1) to avoid repacking colors:   #define IMGUI_USE_BGRA_PACKED_COLOR
+    //  2) to avoid repacking vertices: #define IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT struct ImDrawVert { ImVec2 pos; float z; ImU32 col; ImVec2 uv; }
+    CUSTOMVERTEX* vtx_dst;
+    ImDrawIdx* idx_dst;
+    if (g_pVB->Lock(0, (UINT)(draw_data->TotalVtxCount * sizeof(CUSTOMVERTEX)), (void**)&vtx_dst, D3DLOCK_DISCARD) < 0)
+        return;
+    if (g_pIB->Lock(0, (UINT)(draw_data->TotalIdxCount * sizeof(ImDrawIdx)), (void**)&idx_dst, D3DLOCK_DISCARD) < 0)
+        return;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const ImDrawVert* vtx_src = cmd_list->VtxBuffer.Data;
+        for (int i = 0; i < cmd_list->VtxBuffer.Size; i++)
+        {
+            vtx_dst->pos[0] = vtx_src->pos.x;
+            vtx_dst->pos[1] = vtx_src->pos.y;
+            vtx_dst->pos[2] = 0.0f;
+            vtx_dst->col = (vtx_src->col & 0xFF00FF00) | ((vtx_src->col & 0xFF0000) >> 16) | ((vtx_src->col & 0xFF) << 16);     // RGBA --> ARGB for DirectX9
+            vtx_dst->uv[0] = vtx_src->uv.x;
+            vtx_dst->uv[1] = vtx_src->uv.y;
+            vtx_dst++;
+            vtx_src++;
+        }
+        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+        idx_dst += cmd_list->IdxBuffer.Size;
+    }
+    g_pVB->Unlock();
+    g_pIB->Unlock();
+    g_pd3dDevice->SetStreamSource(0, g_pVB, 0, sizeof(CUSTOMVERTEX));
+    g_pd3dDevice->SetIndices(g_pIB);
+    g_pd3dDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
+
+    // Setup desired DX state
+    ImGui_ImplDX9_SetupRenderState(draw_data);
+
+    // Render command lists
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback != NULL)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX9_SetupRenderState(draw_data);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                const RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
+                const LPDIRECT3DTEXTURE9 texture = (LPDIRECT3DTEXTURE9)pcmd->TextureId;
+                g_pd3dDevice->SetTexture(0, texture);
+                g_pd3dDevice->SetScissorRect(&r);
+                g_pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, pcmd->VtxOffset + global_vtx_offset, 0, (UINT)cmd_list->VtxBuffer.Size, pcmd->IdxOffset + global_idx_offset, pcmd->ElemCount/3);
+            }
+        }
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
+    }
+
+    // Restore the DX9 transform
+    g_pd3dDevice->SetTransform(D3DTS_WORLD, &last_world);
+    g_pd3dDevice->SetTransform(D3DTS_VIEW, &last_view);
+    g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &last_projection);
+
+    // Restore the DX9 state
+    d3d9_state_block->Apply();
+    d3d9_state_block->Release();
+}
+
+bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
+{
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx9";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
+    g_pd3dDevice = device;
+    g_pd3dDevice->AddRef();
+    return true;
+}
+
+void ImGui_ImplDX9_Shutdown()
+{
+    ImGui_ImplDX9_InvalidateDeviceObjects();
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+static bool ImGui_ImplDX9_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height, bytes_per_pixel;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height, &bytes_per_pixel);
+
+    // Upload texture to graphics system
+    g_FontTexture = NULL;
+    if (g_pd3dDevice->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &g_FontTexture, NULL) < 0)
+        return false;
+    D3DLOCKED_RECT tex_locked_rect;
+    if (g_FontTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK)
+        return false;
+    for (int y = 0; y < height; y++)
+        memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, pixels + (width * bytes_per_pixel) * y, (width * bytes_per_pixel));
+    g_FontTexture->UnlockRect(0);
+
+    // Store our identifier
+    io.Fonts->TexID = (ImTextureID)g_FontTexture;
+
+    return true;
+}
+
+bool ImGui_ImplDX9_CreateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return false;
+    if (!ImGui_ImplDX9_CreateFontsTexture())
+        return false;
+    return true;
+}
+
+void ImGui_ImplDX9_InvalidateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return;
+    if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+    if (g_FontTexture) { g_FontTexture->Release(); g_FontTexture = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+}
+
+void ImGui_ImplDX9_NewFrame()
+{
+    if (!g_FontTexture)
+        ImGui_ImplDX9_CreateDeviceObjects();
+}

imgui-submodule/imgui/examples/imgui_impl_dx9.h

@@ -0,0 +1,23 @@
+// dear imgui: Renderer for DirectX9
+// This needs to be used along with a Platform Binding (e.g. Win32)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID!
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+
+struct IDirect3DDevice9;
+
+IMGUI_IMPL_API bool     ImGui_ImplDX9_Init(IDirect3DDevice9* device);
+IMGUI_IMPL_API void     ImGui_ImplDX9_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplDX9_NewFrame();
+IMGUI_IMPL_API void     ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_IMPL_API bool     ImGui_ImplDX9_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplDX9_InvalidateDeviceObjects();

imgui-submodule/imgui/examples/imgui_impl_glfw.cpp

@@ -0,0 +1,369 @@
+// dear imgui: Platform Binding for GLFW
+// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
+// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
+// (Requires: GLFW 3.1+)
+
+// Implemented features:
+//  [X] Platform: Clipboard support.
+//  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange' (note: the resizing cursors requires GLFW 3.4+).
+//  [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2020-01-17: Inputs: Disable error callback while assigning mouse cursors because some X11 setup don't have them and it generates errors.
+//  2019-12-05: Inputs: Added support for new mouse cursors added in GLFW 3.4+ (resizing cursors, not allowed cursor).
+//  2019-10-18: Misc: Previously installed user callbacks are now restored on shutdown.
+//  2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
+//  2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
+//  2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
+//  2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them.
+//  2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
+//  2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
+//  2018-06-08: Misc: Extracted imgui_impl_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples.
+//  2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
+//  2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value, passed to glfwSetCursor()).
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+//  2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
+//  2018-01-25: Inputs: Added gamepad support if ImGuiConfigFlags_NavEnableGamepad is set.
+//  2018-01-25: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set).
+//  2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
+//  2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
+//  2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1).
+//  2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers.
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+
+// GLFW
+#include <GLFW/glfw3.h>
+#ifdef _WIN32
+#undef APIENTRY
+#define GLFW_EXPOSE_NATIVE_WIN32
+#include <GLFW/glfw3native.h>   // for glfwGetWin32Window
+#endif
+#define GLFW_HAS_WINDOW_TOPMOST       (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ GLFW_FLOATING
+#define GLFW_HAS_WINDOW_HOVERED       (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_HOVERED
+#define GLFW_HAS_WINDOW_ALPHA         (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity
+#define GLFW_HAS_PER_MONITOR_DPI      (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale
+#define GLFW_HAS_VULKAN               (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface
+#ifdef GLFW_RESIZE_NESW_CURSOR  // let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released?
+#define GLFW_HAS_NEW_CURSORS          (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR
+#else
+#define GLFW_HAS_NEW_CURSORS          (0)
+#endif
+
+// Data
+enum GlfwClientApi
+{
+    GlfwClientApi_Unknown,
+    GlfwClientApi_OpenGL,
+    GlfwClientApi_Vulkan
+};
+static GLFWwindow*          g_Window = NULL;    // Main window
+static GlfwClientApi        g_ClientApi = GlfwClientApi_Unknown;
+static double               g_Time = 0.0;
+static bool                 g_MouseJustPressed[5] = { false, false, false, false, false };
+static GLFWcursor*          g_MouseCursors[ImGuiMouseCursor_COUNT] = {};
+static bool                 g_InstalledCallbacks = false;
+
+// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
+static GLFWmousebuttonfun   g_PrevUserCallbackMousebutton = NULL;
+static GLFWscrollfun        g_PrevUserCallbackScroll = NULL;
+static GLFWkeyfun           g_PrevUserCallbackKey = NULL;
+static GLFWcharfun          g_PrevUserCallbackChar = NULL;
+
+static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data)
+{
+    return glfwGetClipboardString((GLFWwindow*)user_data);
+}
+
+static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text)
+{
+    glfwSetClipboardString((GLFWwindow*)user_data, text);
+}
+
+void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
+{
+    if (g_PrevUserCallbackMousebutton != NULL)
+        g_PrevUserCallbackMousebutton(window, button, action, mods);
+
+    if (action == GLFW_PRESS && button >= 0 && button < IM_ARRAYSIZE(g_MouseJustPressed))
+        g_MouseJustPressed[button] = true;
+}
+
+void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
+{
+    if (g_PrevUserCallbackScroll != NULL)
+        g_PrevUserCallbackScroll(window, xoffset, yoffset);
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.MouseWheelH += (float)xoffset;
+    io.MouseWheel += (float)yoffset;
+}
+
+void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
+{
+    if (g_PrevUserCallbackKey != NULL)
+        g_PrevUserCallbackKey(window, key, scancode, action, mods);
+
+    ImGuiIO& io = ImGui::GetIO();
+    if (action == GLFW_PRESS)
+        io.KeysDown[key] = true;
+    if (action == GLFW_RELEASE)
+        io.KeysDown[key] = false;
+
+    // Modifiers are not reliable across systems
+    io.KeyCtrl = io.KeysDown[GLFW_KEY_LEFT_CONTROL] || io.KeysDown[GLFW_KEY_RIGHT_CONTROL];
+    io.KeyShift = io.KeysDown[GLFW_KEY_LEFT_SHIFT] || io.KeysDown[GLFW_KEY_RIGHT_SHIFT];
+    io.KeyAlt = io.KeysDown[GLFW_KEY_LEFT_ALT] || io.KeysDown[GLFW_KEY_RIGHT_ALT];
+#ifdef _WIN32
+    io.KeySuper = false;
+#else
+    io.KeySuper = io.KeysDown[GLFW_KEY_LEFT_SUPER] || io.KeysDown[GLFW_KEY_RIGHT_SUPER];
+#endif
+}
+
+void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
+{
+    if (g_PrevUserCallbackChar != NULL)
+        g_PrevUserCallbackChar(window, c);
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.AddInputCharacter(c);
+}
+
+static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
+{
+    g_Window = window;
+    g_Time = 0.0;
+
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
+    io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
+    io.BackendPlatformName = "imgui_impl_glfw";
+
+    // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
+    io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;
+    io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
+    io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
+    io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
+    io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
+    io.KeyMap[ImGuiKey_Insert] = GLFW_KEY_INSERT;
+    io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Space] = GLFW_KEY_SPACE;
+    io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_KeyPadEnter] = GLFW_KEY_KP_ENTER;
+    io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
+    io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
+    io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
+    io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
+    io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
+    io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
+
+    io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
+    io.ClipboardUserData = g_Window;
+#if defined(_WIN32)
+    io.ImeWindowHandle = (void*)glfwGetWin32Window(g_Window);
+#endif
+
+    // Create mouse cursors
+    // (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist,
+    // GLFW will emit an error which will often be printed by the app, so we temporarily disable error reporting.
+    // Missing cursors will return NULL and our _UpdateMouseCursor() function will use the Arrow cursor instead.)
+    GLFWerrorfun prev_error_callback = glfwSetErrorCallback(NULL);
+    g_MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
+#if GLFW_HAS_NEW_CURSORS
+    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_RESIZE_ALL_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_RESIZE_NESW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_RESIZE_NWSE_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_NOT_ALLOWED_CURSOR);
+#else
+    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+    g_MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
+#endif
+    glfwSetErrorCallback(prev_error_callback);
+
+    // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
+    g_PrevUserCallbackMousebutton = NULL;
+    g_PrevUserCallbackScroll = NULL;
+    g_PrevUserCallbackKey = NULL;
+    g_PrevUserCallbackChar = NULL;
+    if (install_callbacks)
+    {
+        g_InstalledCallbacks = true;
+        g_PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
+        g_PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
+        g_PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
+        g_PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
+    }
+
+    g_ClientApi = client_api;
+    return true;
+}
+
+bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks)
+{
+    return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_OpenGL);
+}
+
+bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks)
+{
+    return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Vulkan);
+}
+
+void ImGui_ImplGlfw_Shutdown()
+{
+    if (g_InstalledCallbacks)
+    {
+        glfwSetMouseButtonCallback(g_Window, g_PrevUserCallbackMousebutton);
+        glfwSetScrollCallback(g_Window, g_PrevUserCallbackScroll);
+        glfwSetKeyCallback(g_Window, g_PrevUserCallbackKey);
+        glfwSetCharCallback(g_Window, g_PrevUserCallbackChar);
+        g_InstalledCallbacks = false;
+    }
+
+    for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++)
+    {
+        glfwDestroyCursor(g_MouseCursors[cursor_n]);
+        g_MouseCursors[cursor_n] = NULL;
+    }
+    g_ClientApi = GlfwClientApi_Unknown;
+}
+
+static void ImGui_ImplGlfw_UpdateMousePosAndButtons()
+{
+    // Update buttons
+    ImGuiIO& io = ImGui::GetIO();
+    for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++)
+    {
+        // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
+        io.MouseDown[i] = g_MouseJustPressed[i] || glfwGetMouseButton(g_Window, i) != 0;
+        g_MouseJustPressed[i] = false;
+    }
+
+    // Update mouse position
+    const ImVec2 mouse_pos_backup = io.MousePos;
+    io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
+#ifdef __EMSCRIPTEN__
+    const bool focused = true; // Emscripten
+#else
+    const bool focused = glfwGetWindowAttrib(g_Window, GLFW_FOCUSED) != 0;
+#endif
+    if (focused)
+    {
+        if (io.WantSetMousePos)
+        {
+            glfwSetCursorPos(g_Window, (double)mouse_pos_backup.x, (double)mouse_pos_backup.y);
+        }
+        else
+        {
+            double mouse_x, mouse_y;
+            glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
+            io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);
+        }
+    }
+}
+
+static void ImGui_ImplGlfw_UpdateMouseCursor()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) || glfwGetInputMode(g_Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED)
+        return;
+
+    ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
+    if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor)
+    {
+        // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
+        glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
+    }
+    else
+    {
+        // Show OS mouse cursor
+        // FIXME-PLATFORM: Unfocused windows seems to fail changing the mouse cursor with GLFW 3.2, but 3.3 works here.
+        glfwSetCursor(g_Window, g_MouseCursors[imgui_cursor] ? g_MouseCursors[imgui_cursor] : g_MouseCursors[ImGuiMouseCursor_Arrow]);
+        glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
+    }
+}
+
+static void ImGui_ImplGlfw_UpdateGamepads()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    memset(io.NavInputs, 0, sizeof(io.NavInputs));
+    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
+        return;
+
+    // Update gamepad inputs
+    #define MAP_BUTTON(NAV_NO, BUTTON_NO)       { if (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS) io.NavInputs[NAV_NO] = 1.0f; }
+    #define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); if (v > 1.0f) v = 1.0f; if (io.NavInputs[NAV_NO] < v) io.NavInputs[NAV_NO] = v; }
+    int axes_count = 0, buttons_count = 0;
+    const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count);
+    const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count);
+    MAP_BUTTON(ImGuiNavInput_Activate,   0);     // Cross / A
+    MAP_BUTTON(ImGuiNavInput_Cancel,     1);     // Circle / B
+    MAP_BUTTON(ImGuiNavInput_Menu,       2);     // Square / X
+    MAP_BUTTON(ImGuiNavInput_Input,      3);     // Triangle / Y
+    MAP_BUTTON(ImGuiNavInput_DpadLeft,   13);    // D-Pad Left
+    MAP_BUTTON(ImGuiNavInput_DpadRight,  11);    // D-Pad Right
+    MAP_BUTTON(ImGuiNavInput_DpadUp,     10);    // D-Pad Up
+    MAP_BUTTON(ImGuiNavInput_DpadDown,   12);    // D-Pad Down
+    MAP_BUTTON(ImGuiNavInput_FocusPrev,  4);     // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_FocusNext,  5);     // R1 / RB
+    MAP_BUTTON(ImGuiNavInput_TweakSlow,  4);     // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_TweakFast,  5);     // R1 / RB
+    MAP_ANALOG(ImGuiNavInput_LStickLeft, 0,  -0.3f,  -0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickRight,0,  +0.3f,  +0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickUp,   1,  +0.3f,  +0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickDown, 1,  -0.3f,  -0.9f);
+    #undef MAP_BUTTON
+    #undef MAP_ANALOG
+    if (axes_count > 0 && buttons_count > 0)
+        io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
+    else
+        io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
+}
+
+void ImGui_ImplGlfw_NewFrame()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w, h;
+    int display_w, display_h;
+    glfwGetWindowSize(g_Window, &w, &h);
+    glfwGetFramebufferSize(g_Window, &display_w, &display_h);
+    io.DisplaySize = ImVec2((float)w, (float)h);
+    if (w > 0 && h > 0)
+        io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
+
+    // Setup time step
+    double current_time = glfwGetTime();
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    ImGui_ImplGlfw_UpdateMousePosAndButtons();
+    ImGui_ImplGlfw_UpdateMouseCursor();
+
+    // Update game controllers (if enabled and available)
+    ImGui_ImplGlfw_UpdateGamepads();
+}

imgui-submodule/imgui/examples/imgui_impl_glfw.h

@@ -0,0 +1,34 @@
+// dear imgui: Platform Binding for GLFW
+// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
+// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
+
+// Implemented features:
+//  [X] Platform: Clipboard support.
+//  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
+//  [x] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. FIXME: 3 cursors types are missing from GLFW.
+//  [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// About GLSL version:
+// The 'glsl_version' initialization parameter defaults to "#version 150" if NULL.
+// Only override if your GL version doesn't handle this GLSL version. Keep NULL if unsure!
+
+#pragma once
+
+struct GLFWwindow;
+
+IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks);
+IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplGlfw_NewFrame();
+
+// GLFW callbacks
+// - When calling Init with 'install_callbacks=true': GLFW callbacks will be installed for you. They will call user's previously installed callbacks, if any.
+// - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call those function yourself from your own GLFW callbacks.
+IMGUI_IMPL_API void     ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+IMGUI_IMPL_API void     ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);

imgui-submodule/imgui/examples/imgui_impl_glut.cpp

@@ -0,0 +1,216 @@
+// dear imgui: Platform Binding for GLUT/FreeGLUT
+// This needs to be used along with a Renderer (e.g. OpenGL2)
+
+// !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
+// !!! If someone or something is teaching you GLUT in 2020, you are being abused. Please show some resistance. !!!
+// !!! Nowadays, prefer using GLFW or SDL instead!
+
+// Issues:
+//  [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
+//  [ ] Platform: Missing mouse cursor shape/visibility support.
+//  [ ] Platform: Missing clipboard support (not supported by Glut).
+//  [ ] Platform: Missing gamepad support.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-04-03: Misc: Renamed imgui_impl_freeglut.cpp/.h to imgui_impl_glut.cpp/.h.
+//  2019-03-25: Misc: Made io.DeltaTime always above zero.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
+//  2018-03-22: Added GLUT Platform binding.
+
+#include "imgui.h"
+#include "imgui_impl_glut.h"
+#ifdef __APPLE__
+    #include <GLUT/glut.h>
+#else
+    #include <GL/freeglut.h>
+#endif
+
+#ifdef _MSC_VER
+#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
+#endif
+
+static int g_Time = 0;          // Current time, in milliseconds
+
+bool ImGui_ImplGLUT_Init()
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+#ifdef FREEGLUT
+    io.BackendPlatformName ="imgui_impl_glut (freeglut)";
+#else
+    io.BackendPlatformName ="imgui_impl_glut";
+#endif
+
+    g_Time = 0;
+
+    // Glut has 1 function for characters and one for "special keys". We map the characters in the 0..255 range and the keys above.
+    io.KeyMap[ImGuiKey_Tab]         = '\t'; // == 9 == CTRL+I
+    io.KeyMap[ImGuiKey_LeftArrow]   = 256 + GLUT_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow]  = 256 + GLUT_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow]     = 256 + GLUT_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow]   = 256 + GLUT_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp]      = 256 + GLUT_KEY_PAGE_UP;
+    io.KeyMap[ImGuiKey_PageDown]    = 256 + GLUT_KEY_PAGE_DOWN;
+    io.KeyMap[ImGuiKey_Home]        = 256 + GLUT_KEY_HOME;
+    io.KeyMap[ImGuiKey_End]         = 256 + GLUT_KEY_END;
+    io.KeyMap[ImGuiKey_Insert]      = 256 + GLUT_KEY_INSERT;
+    io.KeyMap[ImGuiKey_Delete]      = 127;
+    io.KeyMap[ImGuiKey_Backspace]   = 8;  // == CTRL+H
+    io.KeyMap[ImGuiKey_Space]       = ' ';
+    io.KeyMap[ImGuiKey_Enter]       = 13; // == CTRL+M
+    io.KeyMap[ImGuiKey_Escape]      = 27;
+    io.KeyMap[ImGuiKey_KeyPadEnter] = 13; // == CTRL+M
+    io.KeyMap[ImGuiKey_A]           = 'A';
+    io.KeyMap[ImGuiKey_C]           = 'C';
+    io.KeyMap[ImGuiKey_V]           = 'V';
+    io.KeyMap[ImGuiKey_X]           = 'X';
+    io.KeyMap[ImGuiKey_Y]           = 'Y';
+    io.KeyMap[ImGuiKey_Z]           = 'Z';
+
+    return true;
+}
+
+void ImGui_ImplGLUT_InstallFuncs()
+{
+    glutReshapeFunc(ImGui_ImplGLUT_ReshapeFunc);
+    glutMotionFunc(ImGui_ImplGLUT_MotionFunc);
+    glutPassiveMotionFunc(ImGui_ImplGLUT_MotionFunc);
+    glutMouseFunc(ImGui_ImplGLUT_MouseFunc);
+#ifdef __FREEGLUT_EXT_H__
+    glutMouseWheelFunc(ImGui_ImplGLUT_MouseWheelFunc);
+#endif
+    glutKeyboardFunc(ImGui_ImplGLUT_KeyboardFunc);
+    glutKeyboardUpFunc(ImGui_ImplGLUT_KeyboardUpFunc);
+    glutSpecialFunc(ImGui_ImplGLUT_SpecialFunc);
+    glutSpecialUpFunc(ImGui_ImplGLUT_SpecialUpFunc);
+}
+
+void ImGui_ImplGLUT_Shutdown()
+{
+}
+
+void ImGui_ImplGLUT_NewFrame()
+{
+    // Setup time step
+    ImGuiIO& io = ImGui::GetIO();
+    int current_time = glutGet(GLUT_ELAPSED_TIME);
+    int delta_time_ms = (current_time - g_Time);
+    if (delta_time_ms <= 0)
+        delta_time_ms = 1;
+    io.DeltaTime = delta_time_ms / 1000.0f;
+    g_Time = current_time;
+
+    // Start the frame
+    ImGui::NewFrame();
+}
+
+static void ImGui_ImplGLUT_UpdateKeyboardMods()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    int mods = glutGetModifiers();
+    io.KeyCtrl = (mods & GLUT_ACTIVE_CTRL) != 0;
+    io.KeyShift = (mods & GLUT_ACTIVE_SHIFT) != 0;
+    io.KeyAlt = (mods & GLUT_ACTIVE_ALT) != 0;
+}
+
+void ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y)
+{
+    // Send character to imgui
+    //printf("char_down_func %d '%c'\n", c, c);
+    ImGuiIO& io = ImGui::GetIO();
+    if (c >= 32)
+        io.AddInputCharacter((unsigned int)c);
+
+    // Store letters in KeysDown[] array as both uppercase and lowercase + Handle GLUT translating CTRL+A..CTRL+Z as 1..26.
+    // This is a hacky mess but GLUT is unable to distinguish e.g. a TAB key from CTRL+I so this is probably the best we can do here.
+    if (c >= 1 && c <= 26)
+        io.KeysDown[c] = io.KeysDown[c - 1 + 'a'] = io.KeysDown[c - 1 + 'A'] = true;
+    else if (c >= 'a' && c <= 'z')
+        io.KeysDown[c] = io.KeysDown[c - 'a' + 'A'] = true;
+    else if (c >= 'A' && c <= 'Z')
+        io.KeysDown[c] = io.KeysDown[c - 'A' + 'a'] = true;
+    else
+        io.KeysDown[c] = true;
+    ImGui_ImplGLUT_UpdateKeyboardMods();
+    (void)x; (void)y; // Unused
+}
+
+void ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y)
+{
+    //printf("char_up_func %d '%c'\n", c, c);
+    ImGuiIO& io = ImGui::GetIO();
+    if (c >= 1 && c <= 26)
+        io.KeysDown[c] = io.KeysDown[c - 1 + 'a'] = io.KeysDown[c - 1 + 'A'] = false;
+    else if (c >= 'a' && c <= 'z')
+        io.KeysDown[c] = io.KeysDown[c - 'a' + 'A'] = false;
+    else if (c >= 'A' && c <= 'Z')
+        io.KeysDown[c] = io.KeysDown[c - 'A' + 'a'] = false;
+    else
+        io.KeysDown[c] = false;
+    ImGui_ImplGLUT_UpdateKeyboardMods();
+    (void)x; (void)y; // Unused
+}
+
+void ImGui_ImplGLUT_SpecialFunc(int key, int x, int y)
+{
+    //printf("key_down_func %d\n", key);
+    ImGuiIO& io = ImGui::GetIO();
+    if (key + 256 < IM_ARRAYSIZE(io.KeysDown))
+        io.KeysDown[key + 256] = true;
+    ImGui_ImplGLUT_UpdateKeyboardMods();
+    (void)x; (void)y; // Unused
+}
+
+void ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y)
+{
+    //printf("key_up_func %d\n", key);
+    ImGuiIO& io = ImGui::GetIO();
+    if (key + 256 < IM_ARRAYSIZE(io.KeysDown))
+        io.KeysDown[key + 256] = false;
+    ImGui_ImplGLUT_UpdateKeyboardMods();
+    (void)x; (void)y; // Unused
+}
+
+void ImGui_ImplGLUT_MouseFunc(int glut_button, int state, int x, int y)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.MousePos = ImVec2((float)x, (float)y);
+    int button = -1;
+    if (glut_button == GLUT_LEFT_BUTTON) button = 0;
+    if (glut_button == GLUT_RIGHT_BUTTON) button = 1;
+    if (glut_button == GLUT_MIDDLE_BUTTON) button = 2;
+    if (button != -1 && state == GLUT_DOWN)
+        io.MouseDown[button] = true;
+    if (button != -1 && state == GLUT_UP)
+        io.MouseDown[button] = false;
+}
+
+#ifdef __FREEGLUT_EXT_H__
+void ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.MousePos = ImVec2((float)x, (float)y);
+    if (dir > 0)
+        io.MouseWheel += 1.0;
+    else if (dir < 0)
+        io.MouseWheel -= 1.0;
+    (void)button; // Unused
+}
+#endif
+
+void ImGui_ImplGLUT_ReshapeFunc(int w, int h)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.DisplaySize = ImVec2((float)w, (float)h);
+}
+
+void ImGui_ImplGLUT_MotionFunc(int x, int y)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.MousePos = ImVec2((float)x, (float)y);
+}

imgui-submodule/imgui/examples/imgui_impl_glut.h

@@ -0,0 +1,35 @@
+// dear imgui: Platform Binding for GLUT/FreeGLUT
+// This needs to be used along with a Renderer (e.g. OpenGL2)
+
+// !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
+// !!! If someone or something is teaching you GLUT in 2020, you are being abused. Please show some resistance. !!!
+// !!! Nowadays, prefer using GLFW or SDL instead!
+
+// Issues:
+//  [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
+//  [ ] Platform: Missing mouse cursor shape/visibility support.
+//  [ ] Platform: Missing clipboard support (not supported by Glut).
+//  [ ] Platform: Missing gamepad support.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+
+IMGUI_IMPL_API bool     ImGui_ImplGLUT_Init();
+IMGUI_IMPL_API void     ImGui_ImplGLUT_InstallFuncs();
+IMGUI_IMPL_API void     ImGui_ImplGLUT_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplGLUT_NewFrame();
+
+// You can call ImGui_ImplGLUT_InstallFuncs() to get all those functions installed automatically,
+// or call them yourself from your own GLUT handlers. We are using the same weird names as GLUT for consistency..
+//---------------------------------------- GLUT name --------------------------------------------- Decent Name ---------
+IMGUI_IMPL_API void     ImGui_ImplGLUT_ReshapeFunc(int w, int h);                           // ~ ResizeFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_MotionFunc(int x, int y);                            // ~ MouseMoveFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_MouseFunc(int button, int state, int x, int y);      // ~ MouseButtonFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y);   // ~ MouseWheelFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y);         // ~ CharPressedFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y);       // ~ CharReleasedFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_SpecialFunc(int key, int x, int y);                  // ~ KeyPressedFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y);                // ~ KeyReleasedFunc

imgui-submodule/imgui/examples/imgui_impl_marmalade.cpp

@@ -0,0 +1,316 @@
+// dear imgui: Renderer + Platform Binding for Marmalade + IwGx
+// Marmalade code: Copyright (C) 2015 by Giovanni Zito (this file is part of Dear ImGui)
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'CIwTexture*' as ImTextureID. Read the FAQ about ImTextureID!
+// Missing features:
+//  [ ] Renderer: Clipping rectangles are not honored.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter.
+//  2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
+//  2018-11-30: Misc: Setting up io.BackendPlatformName/io.BackendRendererName so they can be displayed in the About Window.
+//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_Marmalade_RenderDrawData() in the .h file so you can call it yourself.
+//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
+//  2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
+
+#include "imgui.h"
+#include "imgui_impl_marmalade.h"
+
+#include <s3eClipboard.h>
+#include <s3ePointer.h>
+#include <s3eKeyboard.h>
+#include <IwTexture.h>
+#include <IwGx.h>
+
+// Data
+static double       g_Time = 0.0f;
+static bool         g_MousePressed[3] = { false, false, false };
+static CIwTexture*  g_FontTexture = NULL;
+static char*        g_ClipboardText = NULL;
+static bool         g_osdKeyboardEnabled = false;
+
+// use this setting to scale the interface - e.g. on device you could use 2 or 3 scale factor
+static ImVec2       g_RenderScale = ImVec2(1.0f,1.0f);
+
+// Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_Marmalade_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // Render command lists
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const ImDrawIdx* idx_buffer = cmd_list->IdxBuffer.Data;
+        const int nVert = cmd_list->VtxBuffer.Size;
+        CIwFVec2* pVertStream = IW_GX_ALLOC(CIwFVec2, nVert);
+        CIwFVec2* pUVStream = IW_GX_ALLOC(CIwFVec2, nVert);
+        CIwColour* pColStream = IW_GX_ALLOC(CIwColour, nVert);
+
+        for (int i = 0; i < nVert; i++)
+        {
+            // FIXME-OPT: optimize multiplication on GPU using vertex shader/projection matrix.
+            pVertStream[i].x = cmd_list->VtxBuffer[i].pos.x * g_RenderScale.x;
+            pVertStream[i].y = cmd_list->VtxBuffer[i].pos.y * g_RenderScale.y;
+            pUVStream[i].x = cmd_list->VtxBuffer[i].uv.x;
+            pUVStream[i].y = cmd_list->VtxBuffer[i].uv.y;
+            pColStream[i] = cmd_list->VtxBuffer[i].col;
+        }
+
+        IwGxSetVertStreamScreenSpace(pVertStream, nVert);
+        IwGxSetUVStream(pUVStream);
+        IwGxSetColStream(pColStream, nVert);
+        IwGxSetNormStream(0);
+
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback)
+            {
+                pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                // FIXME: Not honoring ClipRect fields.
+                CIwMaterial* pCurrentMaterial = IW_GX_ALLOC_MATERIAL();
+                pCurrentMaterial->SetShadeMode(CIwMaterial::SHADE_FLAT);
+                pCurrentMaterial->SetCullMode(CIwMaterial::CULL_NONE);
+                pCurrentMaterial->SetFiltering(false);
+                pCurrentMaterial->SetAlphaMode(CIwMaterial::ALPHA_BLEND);
+                pCurrentMaterial->SetDepthWriteMode(CIwMaterial::DEPTH_WRITE_NORMAL);
+                pCurrentMaterial->SetAlphaTestMode(CIwMaterial::ALPHATEST_DISABLED);
+                pCurrentMaterial->SetTexture((CIwTexture*)pcmd->TextureId);
+                IwGxSetMaterial(pCurrentMaterial);
+                IwGxDrawPrims(IW_GX_TRI_LIST, (uint16*)idx_buffer, pcmd->ElemCount);
+            }
+            idx_buffer += pcmd->ElemCount;
+        }
+        IwGxFlush();
+    }
+
+    // TODO: restore modified state (i.e. mvp matrix)
+}
+
+static const char* ImGui_Marmalade_GetClipboardText(void* /*user_data*/)
+{
+    if (!s3eClipboardAvailable())
+        return NULL;
+
+    if (int size = s3eClipboardGetText(NULL, 0))
+    {
+        if (g_ClipboardText)
+            delete[] g_ClipboardText;
+        g_ClipboardText = new char[size];
+        g_ClipboardText[0] = '\0';
+        s3eClipboardGetText(g_ClipboardText, size);
+    }
+
+    return g_ClipboardText;
+}
+
+static void ImGui_Marmalade_SetClipboardText(void* /*user_data*/, const char* text)
+{
+    if (s3eClipboardAvailable())
+        s3eClipboardSetText(text);
+}
+
+int32 ImGui_Marmalade_PointerButtonEventCallback(void* system_data, void* user_data)
+{
+    // pEvent->m_Button is of type s3ePointerButton and indicates which mouse
+    // button was pressed.  For touchscreen this should always have the value
+    // S3E_POINTER_BUTTON_SELECT
+    s3ePointerEvent* pEvent = (s3ePointerEvent*)system_data;
+
+    if (pEvent->m_Pressed == 1)
+    {
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_LEFTMOUSE)
+            g_MousePressed[0] = true;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_RIGHTMOUSE)
+            g_MousePressed[1] = true;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_MIDDLEMOUSE)
+            g_MousePressed[2] = true;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_MOUSEWHEELUP)
+            io.MouseWheel += pEvent->m_y;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_MOUSEWHEELDOWN)
+            io.MouseWheel += pEvent->m_y;
+    }
+
+    return 0;
+}
+
+int32 ImGui_Marmalade_KeyCallback(void* system_data, void* user_data)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    s3eKeyboardEvent* e = (s3eKeyboardEvent*)system_data;
+    if (e->m_Pressed == 1)
+        io.KeysDown[e->m_Key] = true;
+    if (e->m_Pressed == 0)
+        io.KeysDown[e->m_Key] = false;
+
+    io.KeyCtrl = s3eKeyboardGetState(s3eKeyLeftControl) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightControl) == S3E_KEY_STATE_DOWN;
+    io.KeyShift = s3eKeyboardGetState(s3eKeyLeftShift) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightShift) == S3E_KEY_STATE_DOWN;
+    io.KeyAlt = s3eKeyboardGetState(s3eKeyLeftAlt) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightAlt) == S3E_KEY_STATE_DOWN;
+    io.KeySuper = s3eKeyboardGetState(s3eKeyLeftWindows) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightWindows) == S3E_KEY_STATE_DOWN;
+
+    return 0;
+}
+
+int32 ImGui_Marmalade_CharCallback(void* system_data, void* user_data)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    s3eKeyboardCharEvent* e = (s3eKeyboardCharEvent*)system_data;
+    io.AddInputCharacter((unsigned int)e->m_Char);
+
+    return 0;
+}
+
+bool ImGui_Marmalade_CreateDeviceObjects()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Upload texture to graphics system
+    g_FontTexture = new CIwTexture();
+    g_FontTexture->SetModifiable(true);
+    CIwImage& image = g_FontTexture->GetImage();
+    image.SetFormat(CIwImage::ARGB_8888);
+    image.SetWidth(width);
+    image.SetHeight(height);
+    image.SetBuffers();                                    // allocates and own buffers
+    image.ReadTexels(pixels);
+    g_FontTexture->SetMipMapping(false);
+    g_FontTexture->SetFiltering(false);
+    g_FontTexture->Upload();
+
+    // Store our identifier
+    io.Fonts->TexID = (ImTextureID)g_FontTexture;
+
+    return true;
+}
+
+void    ImGui_Marmalade_InvalidateDeviceObjects()
+{
+    if (g_ClipboardText)
+    {
+        delete[] g_ClipboardText;
+        g_ClipboardText = NULL;
+    }
+
+    if (g_FontTexture)
+    {
+        delete g_FontTexture;
+        ImGui::GetIO().Fonts->TexID = 0;
+        g_FontTexture = NULL;
+    }
+}
+
+bool    ImGui_Marmalade_Init(bool install_callbacks)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName = io.BackendRendererName = "imgui_impl_marmalade";
+
+    io.KeyMap[ImGuiKey_Tab] = s3eKeyTab;                     // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
+    io.KeyMap[ImGuiKey_LeftArrow] = s3eKeyLeft;
+    io.KeyMap[ImGuiKey_RightArrow] = s3eKeyRight;
+    io.KeyMap[ImGuiKey_UpArrow] = s3eKeyUp;
+    io.KeyMap[ImGuiKey_DownArrow] = s3eKeyDown;
+    io.KeyMap[ImGuiKey_PageUp] = s3eKeyPageUp;
+    io.KeyMap[ImGuiKey_PageDown] = s3eKeyPageDown;
+    io.KeyMap[ImGuiKey_Home] = s3eKeyHome;
+    io.KeyMap[ImGuiKey_End] = s3eKeyEnd;
+    io.KeyMap[ImGuiKey_Insert] = s3eKeyInsert;
+    io.KeyMap[ImGuiKey_Delete] = s3eKeyDelete;
+    io.KeyMap[ImGuiKey_Backspace] = s3eKeyBackspace;
+    io.KeyMap[ImGuiKey_Space] = s3eKeySpace;
+    io.KeyMap[ImGuiKey_Enter] = s3eKeyEnter;
+    io.KeyMap[ImGuiKey_Escape] = s3eKeyEsc;
+    io.KeyMap[ImGuiKey_KeyPadEnter] = s3eKeyNumPadEnter;
+    io.KeyMap[ImGuiKey_A] = s3eKeyA;
+    io.KeyMap[ImGuiKey_C] = s3eKeyC;
+    io.KeyMap[ImGuiKey_V] = s3eKeyV;
+    io.KeyMap[ImGuiKey_X] = s3eKeyX;
+    io.KeyMap[ImGuiKey_Y] = s3eKeyY;
+    io.KeyMap[ImGuiKey_Z] = s3eKeyZ;
+
+    io.SetClipboardTextFn = ImGui_Marmalade_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_Marmalade_GetClipboardText;
+
+    if (install_callbacks)
+    {
+        s3ePointerRegister(S3E_POINTER_BUTTON_EVENT, ImGui_Marmalade_PointerButtonEventCallback, 0);
+        s3eKeyboardRegister(S3E_KEYBOARD_KEY_EVENT, ImGui_Marmalade_KeyCallback, 0);
+        s3eKeyboardRegister(S3E_KEYBOARD_CHAR_EVENT, ImGui_Marmalade_CharCallback, 0);
+    }
+
+    return true;
+}
+
+void ImGui_Marmalade_Shutdown()
+{
+    ImGui_Marmalade_InvalidateDeviceObjects();
+}
+
+void ImGui_Marmalade_NewFrame()
+{
+    if (!g_FontTexture)
+        ImGui_Marmalade_CreateDeviceObjects();
+
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w = IwGxGetScreenWidth(), h = IwGxGetScreenHeight();
+    io.DisplaySize = ImVec2((float)w, (float)h);
+     // For retina display or other situations where window coordinates are different from framebuffer coordinates. User storage only, presently not used by ImGui.
+    io.DisplayFramebufferScale = g_scale;
+
+    // Setup time step
+    double current_time = s3eTimerGetUST() / 1000.0f;
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    double mouse_x, mouse_y;
+    mouse_x = s3ePointerGetX();
+    mouse_y = s3ePointerGetY();
+    io.MousePos = ImVec2((float)mouse_x/g_scale.x, (float)mouse_y/g_scale.y);   // Mouse position (set to -FLT_MAX,-FLT_MAX if no mouse / on another screen, etc.)
+
+    for (int i = 0; i < 3; i++)
+    {
+        io.MouseDown[i] = g_MousePressed[i] || s3ePointerGetState((s3ePointerButton)i) != S3E_POINTER_STATE_UP;    // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
+        g_MousePressed[i] = false;
+    }
+
+    // TODO: Hide OS mouse cursor if ImGui is drawing it
+    // s3ePointerSetInt(S3E_POINTER_HIDE_CURSOR,(io.MouseDrawCursor ? 0 : 1));
+
+     // Show/hide OSD keyboard
+    if (io.WantTextInput)
+    {
+        // Some text input widget is active?
+        if (!g_osdKeyboardEnabled)
+        {
+            g_osdKeyboardEnabled = true;
+            s3eKeyboardSetInt(S3E_KEYBOARD_GET_CHAR, 1);    // show OSD keyboard
+        }
+    }
+    else
+    {
+        // No text input widget is active
+        if (g_osdKeyboardEnabled)
+        {
+            g_osdKeyboardEnabled = false;
+            s3eKeyboardSetInt(S3E_KEYBOARD_GET_CHAR, 0);    // hide OSD keyboard
+        }
+    }
+}