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Mario Hüttel 2020-03-21 22:38:10 +01:00
parent b22be7d6a5
commit 4a7e0ac82a
178 changed files with 73595 additions and 94 deletions
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16
CMakeLists.txt
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@ -3,13 +3,14 @@ project(opengl-playground)
#set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
cmake_minimum_required(VERSION 2.8)
find_package(glm REQUIRED)
find_package(PkgConfig REQUIRED)
pkg_check_modules(EPOXY REQUIRED epoxy)
pkg_check_modules(SDL2 REQUIRED sdl2)
#find_package(OpenCL REQUIRED)
include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include" ${EPOXY_INCLUDE_DIRS} ${SDL2_INCLUDE_DIRS})
include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include" "${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/examples" "${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui" ${EPOXY_INCLUDE_DIRS} ${SDL2_INCLUDE_DIRS})
configure_file("shaders/2d-passthrough-vertex.glsl" "shaders/2d-passthrough-vertex.glsl" COPYONLY)
@ -22,9 +23,18 @@ configure_file("shaders/textured-rectangle-fragment.glsl" "shaders/textured-rect
configure_file("shaders/2d-zoom-translate-vertex.glsl" "shaders/2d-zoom-translate-vertex.glsl" COPYONLY)
set(IMGUI_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/imgui.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/imgui_draw.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/imgui_demo.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/imgui_widgets.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/misc/cpp/imgui_stdlib.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/examples/imgui_impl_sdl.cpp"
"${CMAKE_CURRENT_SOURCE_DIR}/imgui-submodule/imgui/examples/imgui_impl_opengl3.cpp"
)
aux_source_directory("src" SOURCES)
add_compile_options(-Wall)
add_executable(${PROJECT_NAME} ${SOURCES})
target_link_libraries(${PROJECT_NAME} m pthread ${EPOXY_LIBRARIES} ${SDL2_LIBRARIES})
add_executable(${PROJECT_NAME} ${SOURCES} ${IMGUI_SOURCES})
target_link_libraries(${PROJECT_NAME} m pthread ${EPOXY_LIBRARIES} ${SDL2_LIBRARIES} glm)
install (TARGETS ${PROJECT_NAME} DESTINATION bin)

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imgui-submodule/imgui/LICENSE.txt Normal file
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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2014-2020 Omar Cornut
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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imgui-submodule/imgui/docs/CHANGELOG.txt Normal file
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imgui-submodule/imgui/docs/FAQ.md Normal file
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# FAQ (Frequenty Asked Questions)
You may link to this document using short form:
https://www.dearimgui.org/faq
or its real address:
https://github.com/ocornut/imgui/blob/master/docs/FAQ.md
or view this file with any Markdown viewer.
## Index
| **Q&A: Basics** |
:---------------------------------------------------------- |
| [Where is the documentation?](#q-where-is-the-documentation) |
| [What is this library called?](#q-what-is-this-library-called) |
| [Which version should I get?](#q-which-version-should-i-get) |
| **Q&A: Integration** |
| **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-to-my-application)** |
| [How can I enable keyboard or gamepad controls?](#q-how-can-i-enable-keyboard-or-gamepad-controls) |
| [How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)](#q-how-can-i-use-this-on-a-machine-without-mouse-keyboard-or-screen-input-share-remote-display) |
| [I integrated Dear ImGui in my engine and the text or lines are blurry..](#q-i-integrated-dear-imgui-in-my-engine-and-the-text-or-lines-are-blurry) |
| [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around) |
| **Q&A: Usage** |
| **[Why are multiple widgets reacting when I interact with a single one?<br>How can I have multiple widgets with the same label or with an empty label?](#q-why-are-multiple-widgets-reacting-when-i-interact-with-a-single-one-q-how-can-i-have-multiple-widgets-with-the-same-label-or-with-an-empty-label)** |
| [How can I display an image? What is ImTextureID, how does it work?](#q-how-can-i-display-an-image-what-is-imtextureid-how-does-it-work)|
| [How can I use my own math types instead of ImVec2/ImVec4?](#q-how-can-i-use-my-own-math-types-instead-of-imvec2imvec4) |
| [How can I interact with standard C++ types (such as std::string and std::vector)?](#q-how-can-i-interact-with-standard-c-types-such-as-stdstring-and-stdvector) |
| [How can I display custom shapes? (using low-level ImDrawList API)](#q-how-can-i-display-custom-shapes-using-low-level-imdrawlist-api) |
| **Q&A: Fonts, Text** |
| [How can I load a different font than the default?](#q-how-can-i-load-a-different-font-than-the-default) |
| [How can I easily use icons in my application?](#q-how-can-i-easily-use-icons-in-my-application) |
| [How can I load multiple fonts?](#q-how-can-i-load-multiple-fonts) |
| [How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?](#q-how-can-i-display-and-input-non-latin-characters-such-as-chinese-japanese-korean-cyrillic) |
| **Q&A: Concerns** |
| [Who uses Dear ImGui?](#q-who-uses-dear-imgui) |
| [Can you create elaborate/serious tools with Dear ImGui?](#q-can-you-create-elaborateserious-tools-with-dear-imgui) |
| [Can you reskin the look of Dear ImGui?](#q-can-you-reskin-the-look-of-dear-imgui) |
| [Why using C++ (as opposed to C)?](#q-why-using-c-as-opposed-to-c) |
| **Q&A: Community** |
| [How can I help?](#q-how-can-i-help) |
# Q&A: Basics
### Q: Where is the documentation?
**This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.**
- Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder to explain how to integrate Dear ImGui with your own engine/application. You can run those applications and explore them.
- See demo code in [imgui_demo.cpp](https://github.com/ocornut/imgui/blob/master/imgui_demo.cpp) and particularly the `ImGui::ShowDemoWindow()` function. The demo covers most features of Dear ImGui, so you can read the code and see its output.
- See documentation and comments at the top of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) + general API comments in [imgui.h](https://github.com/ocornut/imgui/blob/master/imgui.h).
- The [Wiki](https://github.com/ocornut/imgui/wiki) has many resources and links.
- The [Glossary](https://github.com/ocornut/imgui/wiki/Glossary) page may be useful.
- The [Issues](https://github.com/ocornut/imgui/issues) section can be searched for past questions and issues.
- Your programming IDE is your friend, find the type or function declaration to find comments associated to it.
- The `ImGui::ShowMetricsWindow()` function exposes lots of internal information and tools. Although it is primary designed as a debugging tool, having access to that information tends to help understands concepts.
##### [Return to Index](#index)
---
### Q. What is this library called?
**This library is called Dear ImGui**. Please refer to it as Dear ImGui (not ImGui, not IMGUI).
(The library misleadingly started its life in 2014 as "ImGui" due to the fact that I didn't give it a proper name when when I released 1.0, and had no particular expectation that it would take off. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations e.g. Unity uses it own implementation of the IMGUI paradigm. To reduce the ambiguity without affecting existing code bases, I have decided in December 2015 a fully qualified name "Dear ImGui" for this library.
##### [Return to Index](#index)
---
### Q: Which version should I get?
I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
You may use the [docking](https://github.com/ocornut/imgui/tree/docking) branch which includes:
- [Docking features](https://github.com/ocornut/imgui/issues/2109)
- [Multi-viewport features](https://github.com/ocornut/imgui/issues/1542)
Many projects are using this branch and it is kept in sync with master regularly.
##### [Return to Index](#index)
----
# Q&A: Integration
### Q: How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?
You can read the `io.WantCaptureMouse`, `io.WantCaptureKeyboard` and `io.WantTextInput` flags from the ImGuiIO structure.
e.g. `if (ImGui::GetIO().WantCaptureMouse) { ... }`
- When `io.WantCaptureMouse` is set, imgui wants to use your mouse state, and you may want to discard/hide the inputs from the rest of your application.
- When `io.WantCaptureKeyboard` is set, imgui wants to use your keyboard state, and you may want to discard/hide the inputs from the rest of your application.
- When `io.WantTextInput` is set to may want to notify your OS to popup an on-screen keyboard, if available (e.g. on a mobile phone, or console OS).
**Note:** You should always pass your mouse/keyboard inputs to Dear ImGui, even when the io.WantCaptureXXX flag are set false.
This is because imgui needs to detect that you clicked in the void to unfocus its own windows.
**Note:** The `io.WantCaptureMouse` is more accurate that any manual attempt to "check if the mouse is hovering a window" (don't do that!). It handle mouse dragging correctly (both dragging that started over your application or over an imgui window) and handle e.g. modal windows blocking inputs. Those flags are updated by `ImGui::NewFrame()`. Preferably read the flags after calling NewFrame() if you can afford it, but reading them before is also perfectly fine, as the bool toggle fairly rarely. If you have on a touch device, you might find use for an early call to `UpdateHoveredWindowAndCaptureFlags()`.
**Note:** Text input widget releases focus on "Return KeyDown", so the subsequent "Return KeyUp" event that your application receive will typically have `io.WantCaptureKeyboard == false`. Depending on your application logic it may or not be inconvenient. You might want to track which key-downs were targeted for Dear ImGui, e.g. with an array of bool, and filter out the corresponding key-ups.)
##### [Return to Index](#index)
---
### Q: How can I enable keyboard or gamepad controls?
- The gamepad/keyboard navigation is fairly functional and keeps being improved. The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable. Gamepad support is particularly useful to use Dear ImGui on a game console (e.g. PS4, Switch, XB1) without a mouse connected!
- Keyboard: set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard` to enable.
- Gamepad: set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad` to enable (with a supporting back-end).
- See [Control Sheets for Gamepads](http://www.dearimgui.org/controls_sheets) (reference PNG/PSD for for PS4, XB1, Switch gamepads).
- See `USING GAMEPAD/KEYBOARD NAVIGATION CONTROLS` section of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) for more details.
##### [Return to Index](#index)
---
### Q: How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)
- You can share your computer mouse seamlessly with your console/tablet/phone using solutions such as [Synergy](https://symless.com/synergy)
This is the preferred solution for developer productivity.
In particular, the [micro-synergy-client repository](https://github.com/symless/micro-synergy-client) has simple
and portable source code (uSynergy.c/.h) for a small embeddable client that you can use on any platform to connect
to your host computer, based on the Synergy 1.x protocol. Make sure you download the Synergy 1 server on your computer.
Console SDK also sometimes provide equivalent tooling or wrapper for Synergy-like protocols.
- Game console users: consider emulating a mouse cursor with DualShock4 touch pad or a spare analog stick as a mouse-emulation fallback.
- You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui) or [imgui-ws](https://github.com/ggerganov/imgui-ws) which sends the vertices to render over the local network, allowing you to use Dear ImGui even on a screen-less machine. See [Wiki](https://github.com/ocornut/imgui/wiki) index for most details.
- For touch inputs, you can increase the hit box of widgets (via the `style.TouchPadding` setting) to accommodate for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
##### [Return to Index](#index)
---
### Q: I integrated Dear ImGui in my engine and the text or lines are blurry..
In your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f).
Also make sure your orthographic projection matrix and io.DisplaySize matches your actual framebuffer dimension.
##### [Return to Index](#index)
---
### Q: I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
You are probably mishandling the clipping rectangles in your render function.
Rectangles provided by ImGui are defined as
`(x1=left,y1=top,x2=right,y2=bottom)`
and **NOT** as
`(x1,y1,width,height)`
##### [Return to Index](#index)
---
# Q&A: Usage
### Q: Why are multiple widgets reacting when I interact with a single one? <br>Q: How can I have multiple widgets with the same label or with an empty label?
A primer on labels and the ID Stack...
Dear ImGui internally need to uniquely identify UI elements.
Elements that are typically not clickable (such as calls to the Text functions) don't need an ID.
Interactive widgets (such as calls to Button buttons) need a unique ID.
Unique ID are used internally to track active widgets and occasionally associate state to widgets.
Unique ID are implicitly built from the hash of multiple elements that identify the "path" to the UI element.
- Unique ID are often derived from a string label and at minimum scoped within their host window:
```c
Begin("MyWindow");
Button("OK"); // Label = "OK", ID = hash of ("MyWindow" "OK")
Button("Cancel"); // Label = "Cancel", ID = hash of ("MyWindow", "Cancel")
End();
```
- Other elements such as tree nodes, etc. also pushes to the ID stack:
```c
Begin("MyWindow");
if (TreeNode("MyTreeNode"))
{
Button("OK"); // Label = "OK", ID = hash of ("MyWindow", "MyTreeNode", "OK")
TreePop();
}
End();
```
- Two items labeled "OK" in different windows or different tree locations won't collide:
```
Begin("MyFirstWindow");
Button("OK"); // Label = "OK", ID = hash of ("MyFirstWindow", "OK")
End();
Begin("MyOtherWindow");
Button("OK"); // Label = "OK", ID = hash of ("MyOtherWindow", "OK")
End();
```
We used "..." above to signify whatever was already pushed to the ID stack previously:
- If you have a same ID twice in the same location, you'll have a conflict:
```c
Button("OK");
Button("OK"); // ID collision! Interacting with either button will trigger the first one.
```
Fear not! this is easy to solve and there are many ways to solve it!
- Solving ID conflict in a simple/local context:
When passing a label you can optionally specify extra ID information within string itself.
Use "##" to pass a complement to the ID that won't be visible to the end-user.
This helps solving the simple collision cases when you know e.g. at compilation time which items
are going to be created:
```c
Begin("MyWindow");
Button("Play"); // Label = "Play", ID = hash of ("MyWindow", "Play")
Button("Play##foo1"); // Label = "Play", ID = hash of ("MyWindow", "Play##foo1") // Different from above
Button("Play##foo2"); // Label = "Play", ID = hash of ("MyWindow", "Play##foo2") // Different from above
End();
```
- If you want to completely hide the label, but still need an ID:
```c
Checkbox("##On", &b); // Label = "", ID = hash of (..., "##On") // No visible label, just a checkbox!
```
- Occasionally/rarely you might want change a label while preserving a constant ID. This allows
you to animate labels. For example you may want to include varying information in a window title bar,
but windows are uniquely identified by their ID. Use "###" to pass a label that isn't part of ID:
```c
Button("Hello###ID"); // Label = "Hello", ID = hash of (..., "###ID")
Button("World###ID"); // Label = "World", ID = hash of (..., "###ID") // Same as above, even if the label looks different
sprintf(buf, "My game (%f FPS)###MyGame", fps);
Begin(buf); // Variable title, ID = hash of "MyGame"
```
- Solving ID conflict in a more general manner:
Use PushID() / PopID() to create scopes and manipulate the ID stack, as to avoid ID conflicts
within the same window. This is the most convenient way of distinguishing ID when iterating and
creating many UI elements programmatically.
You can push a pointer, a string or an integer value into the ID stack.
Remember that ID are formed from the concatenation of _everything_ pushed into the ID stack.
At each level of the stack we store the seed used for items at this level of the ID stack.
```c
Begin("Window");
for (int i = 0; i < 100; i++)
{
PushID(i); // Push i to the id tack
Button("Click"); // Label = "Click", ID = hash of ("Window", i, "Click")
PopID();
}
for (int i = 0; i < 100; i++)
{
MyObject* obj = Objects[i];
PushID(obj);
Button("Click"); // Label = "Click", ID = hash of ("Window", obj pointer, "Click")
PopID();
}
for (int i = 0; i < 100; i++)
{
MyObject* obj = Objects[i];
PushID(obj->Name);
Button("Click"); // Label = "Click", ID = hash of ("Window", obj->Name, "Click")
PopID();
}
End();
```
- You can stack multiple prefixes into the ID stack:
```c
Button("Click"); // Label = "Click", ID = hash of (..., "Click")
PushID("node");
Button("Click"); // Label = "Click", ID = hash of (..., "node", "Click")
PushID(my_ptr);
Button("Click"); // Label = "Click", ID = hash of (..., "node", my_ptr, "Click")
PopID();
PopID();
```
- Tree nodes implicitly creates a scope for you by calling PushID().
```c
Button("Click"); // Label = "Click", ID = hash of (..., "Click")
if (TreeNode("node")) // <-- this function call will do a PushID() for you (unless instructed not to, with a special flag)
{
Button("Click"); // Label = "Click", ID = hash of (..., "node", "Click")
TreePop();
}
```
- When working with trees, ID are used to preserve the open/close state of each tree node.
Depending on your use cases you may want to use strings, indices or pointers as ID.
e.g. when following a single pointer that may change over time, using a static string as ID
will preserve your node open/closed state when the targeted object change.
e.g. when displaying a list of objects, using indices or pointers as ID will preserve the
node open/closed state differently. See what makes more sense in your situation!
##### [Return to Index](#index)
---
### Q: How can I display an image? What is ImTextureID, how does it work?
Short explanation:
- Refer to [Image Loading and Displaying Examples](https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples) on the [Wiki](https://github.com/ocornut/imgui/wiki).
- You may use functions such as `ImGui::Image()`, `ImGui::ImageButton()` or lower-level `ImDrawList::AddImage()` to emit draw calls that will use your own textures.
- Actual textures are identified in a way that is up to the user/engine. Those identifiers are stored and passed as ImTextureID (void*) value.
- Loading image files from the disk and turning them into a texture is not within the scope of Dear ImGui (for a good reason).
**Please read documentations or tutorials on your graphics API to understand how to display textures on the screen before moving onward.**
Long explanation:
- Dear ImGui's job is to create "meshes", defined in a renderer-agnostic format made of draw commands and vertices. At the end of the frame those meshes (ImDrawList) will be displayed by your rendering function. They are made up of textured polygons and the code to render them is generally fairly short (a few dozen lines). In the examples/ folder we provide functions for popular graphics API (OpenGL, DirectX, etc.).
- Each rendering function decides on a data type to represent "textures". The concept of what is a "texture" is entirely tied to your underlying engine/graphics API.
We carry the information to identify a "texture" in the ImTextureID type.
ImTextureID is nothing more that a void*, aka 4/8 bytes worth of data: just enough to store 1 pointer or 1 integer of your choice.
Dear ImGui doesn't know or understand what you are storing in ImTextureID, it merely pass ImTextureID values until they reach your rendering function.
- In the [examples/](https://github.com/ocornut/imgui/tree/master/examples) bindings, for each graphics API binding we decided on a type that is likely to be a good representation for specifying an image from the end-user perspective. This is what the _examples_ rendering functions are using:
```
OpenGL:
- ImTextureID = GLuint
- See ImGui_ImplOpenGL3_RenderDrawData() function in imgui_impl_opengl3.cpp
```
```
DirectX9:
- ImTextureID = LPDIRECT3DTEXTURE9
- See ImGui_ImplDX9_RenderDrawData() function in imgui_impl_dx9.cpp
```
```
DirectX11:
- ImTextureID = ID3D11ShaderResourceView*
- See ImGui_ImplDX11_RenderDrawData() function in imgui_impl_dx11.cpp
```
```
DirectX12:
- ImTextureID = D3D12_GPU_DESCRIPTOR_HANDLE
- See ImGui_ImplDX12_RenderDrawData() function in imgui_impl_dx12.cpp
```
For example, in the OpenGL example binding we store raw OpenGL texture identifier (GLuint) inside ImTextureID.
Whereas in the DirectX11 example binding we store a pointer to ID3D11ShaderResourceView inside ImTextureID, which is a higher-level structure tying together both the texture and information about its format and how to read it.
- If you have a custom engine built over e.g. OpenGL, instead of passing GLuint around you may decide to use a high-level data type to carry information about the texture as well as how to display it (shaders, etc.). The decision of what to use as ImTextureID can always be made better knowing how your codebase is designed. If your engine has high-level data types for "textures" and "material" then you may want to use them.
If you are starting with OpenGL or DirectX or Vulkan and haven't built much of a rendering engine over them, keeping the default ImTextureID representation suggested by the example bindings is probably the best choice.
(Advanced users may also decide to keep a low-level type in ImTextureID, and use ImDrawList callback and pass information to their renderer)
User code may do:
```cpp
// Cast our texture type to ImTextureID / void*
MyTexture* texture = g_CoffeeTableTexture;
ImGui::Image((void*)texture, ImVec2(texture->Width, texture->Height));
```
The renderer function called after ImGui::Render() will receive that same value that the user code passed:
```cpp
// Cast ImTextureID / void* stored in the draw command as our texture type
MyTexture* texture = (MyTexture*)pcmd->TextureId;
MyEngineBindTexture2D(texture);
```
Once you understand this design you will understand that loading image files and turning them into displayable textures is not within the scope of Dear ImGui.
This is by design and is actually a good thing, because it means your code has full control over your data types and how you display them.
If you want to display an image file (e.g. PNG file) into the screen, please refer to documentation and tutorials for the graphics API you are using.
Refer to [Image Loading and Displaying Examples](https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples) on the [Wiki](https://github.com/ocornut/imgui/wiki) to find simplified examples for loading textures with OpenGL, DirectX9 and DirectX11.
C/C++ tip: a void* is pointer-sized storage. You may safely store any pointer or integer into it by casting your value to ImTextureID / void*, and vice-versa.
Because both end-points (user code and rendering function) are under your control, you know exactly what is stored inside the ImTextureID / void*.
Examples:
```cpp
GLuint my_tex = XXX;
void* my_void_ptr;
my_void_ptr = (void*)(intptr_t)my_tex; // cast a GLuint into a void* (we don't take its address! we literally store the value inside the pointer)
my_tex = (GLuint)(intptr_t)my_void_ptr; // cast a void* into a GLuint
ID3D11ShaderResourceView* my_dx11_srv = XXX;
void* my_void_ptr;
my_void_ptr = (void*)my_dx11_srv; // cast a ID3D11ShaderResourceView* into an opaque void*
my_dx11_srv = (ID3D11ShaderResourceView*)my_void_ptr; // cast a void* into a ID3D11ShaderResourceView*
```
Finally, you may call `ImGui::ShowMetricsWindow()` to explore/visualize/understand how the ImDrawList are generated.
##### [Return to Index](#index)
---
### Q: How can I use my own math types instead of ImVec2/ImVec4?
You can edit [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) and setup the `IM_VEC2_CLASS_EXTRA`/`IM_VEC4_CLASS_EXTRA` macros to add implicit type conversions.
This way you'll be able to use your own types everywhere, e.g. passing `MyVector2` or `glm::vec2` to ImGui functions instead of `ImVec2`.
##### [Return to Index](#index)
---
### Q: How can I interact with standard C++ types (such as std::string and std::vector)?
- Being highly portable (bindings for several languages, frameworks, programming style, obscure or older platforms/compilers), and aiming for compatibility & performance suitable for every modern real-time game engines, dear imgui does not use any of std C++ types. We use raw types (e.g. char* instead of std::string) because they adapt to more use cases.
- To use ImGui::InputText() with a std::string or any resizable string class, see [misc/cpp/imgui_stdlib.h](https://github.com/ocornut/imgui/blob/master/misc/cpp/imgui_stdlib.h).
- To use combo boxes and list boxes with `std::vector` or any other data structure: the `BeginCombo()/EndCombo()` API
lets you iterate and submit items yourself, so does the `ListBoxHeader()/ListBoxFooter()` API.
Prefer using them over the old and awkward `Combo()/ListBox()` api.
- Generally for most high-level types you should be able to access the underlying data type.
You may write your own one-liner wrappers to facilitate user code (tip: add new functions in ImGui:: namespace from your code).
- Dear ImGui applications often need to make intensive use of strings. It is expected that many of the strings you will pass
to the API are raw literals (free in C/C++) or allocated in a manner that won't incur a large cost on your application.
Please bear in mind that using `std::string` on applications with large amount of UI may incur unsatisfactory performances.
Modern implementations of `std::string` often include small-string optimization (which is often a local buffer) but those
are not configurable and not the same across implementations.
- If you are finding your UI traversal cost to be too large, make sure your string usage is not leading to excessive amount
of heap allocations. Consider using literals, statically sized buffers and your own helper functions. A common pattern
is that you will need to build lots of strings on the fly, and their maximum length can be easily be scoped ahead.
One possible implementation of a helper to facilitate printf-style building of strings: https://github.com/ocornut/Str
This is a small helper where you can instance strings with configurable local buffers length. Many game engines will
provide similar or better string helpers.
##### [Return to Index](#index)
---
### Q: How can I display custom shapes? (using low-level ImDrawList API)
- You can use the low-level `ImDrawList` api to render shapes within a window.
```
ImGui::Begin("My shapes");
ImDrawList* draw_list = ImGui::GetWindowDrawList();
// Get the current ImGui cursor position
ImVec2 p = ImGui::GetCursorScreenPos();
// Draw a red circle
draw_list->AddCircleFilled(ImVec2(p.x + 50, p.y + 50), 30.0f, IM_COL32(255, 0, 0, 255), 16);
// Draw a 3 pixel thick yellow line
draw_list->AddLine(ImVec2(p.x, p.y), ImVec2(p.x + 100.0f, p.y + 100.0f), IM_COL32(255, 255, 0, 255), 3.0f);
// Advance the ImGui cursor to claim space in the window (otherwise the window will appears small and needs to be resized)
ImGui::Dummy(ImVec2(200, 200));
ImGui::End();
```
![ImDrawList usage](https://raw.githubusercontent.com/wiki/ocornut/imgui/tutorials/CustomRendering01.png)
- Refer to "Demo > Examples > Custom Rendering" in the demo window and read the code of `ShowExampleAppCustomRendering()` in `imgui_demo.cpp` from more examples.
- To generate colors: you can use the macro `IM_COL32(255,255,255,255)` to generate them at compile time, or use `ImGui::GetColorU32(IM_COL32(255,255,255,255))` or `ImGui::GetColorU32(ImVec4(1.0f,1.0f,1.0f,1.0f))` to generate a color that is multiplied by the current value of `style.Alpha`.
- Math operators: if you have setup `IM_VEC2_CLASS_EXTRA` in `imconfig.h` to bind your own math types, you can use your own math types and their natural operators instead of ImVec2. ImVec2 by default doesn't export any math operators in the public API. You may use `#define IMGUI_DEFINE_MATH_OPERATORS` `#include "imgui_internal.h"` to use the internally defined math operators, but instead prefer using your own math library and set it up in `imconfig.h`.
- You can use `ImGui::GetBackgroundDrawList()` or `ImGui::GetForegroundDrawList()` to access draw lists which will be displayed behind and over every other dear imgui windows (one bg/fg drawlist per viewport). This is very convenient if you need to quickly display something on the screen that is not associated to a dear imgui window.
- You can also create your own dummy window and draw inside it. Call Begin() with the NoBackground | NoDecoration | NoSavedSettings | NoInputs flags (The `ImGuiWindowFlags_NoDecoration` flag itself is a shortcut for NoTitleBar | NoResize | NoScrollbar | NoCollapse). Then you can retrieve the ImDrawList* via GetWindowDrawList() and draw to it in any way you like.
- You can create your own ImDrawList instance. You'll need to initialize them with `ImGui::GetDrawListSharedData()`, or create your own instancing ImDrawListSharedData, and then call your renderer function with your own ImDrawList or ImDrawData data.
##### [Return to Index](#index)
---
# Q&A: Fonts, Text
### Q: How can I load a different font than the default?
Use the font atlas to load the TTF/OTF file you want:
```c
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels);
io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
```
Default is ProggyClean.ttf, monospace, rendered at size 13, embedded in dear imgui's source code.
(Tip: monospace fonts are convenient because they allow to facilitate horizontal alignment directly at the string level.)
(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about font loading.)
New programmers: remember that in C/C++ and most programming languages if you want to use a
backslash \ within a string literal, you need to write it double backslash "\\":
```c
io.Fonts->AddFontFromFileTTF("MyFolder\MyFont.ttf", size); // WRONG (you are escaping the M here!)
io.Fonts->AddFontFromFileTTF("MyFolder\\MyFont.ttf", size; // CORRECT
io.Fonts->AddFontFromFileTTF("MyFolder/MyFont.ttf", size); // ALSO CORRECT
```
##### [Return to Index](#index)
---
### Q: How can I easily use icons in my application?
The most convenient and practical way is to merge an icon font such as FontAwesome inside you
main font. Then you can refer to icons within your strings.
You may want to see `ImFontConfig::GlyphMinAdvanceX` to make your icon look monospace to facilitate alignment.
(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about icons font loading.)
With some extra effort, you may use colorful icon by registering custom rectangle space inside the font atlas,
and copying your own graphics data into it. See docs/FONTS.txt about using the AddCustomRectFontGlyph API.
##### [Return to Index](#index)
---
### Q: How can I load multiple fonts?
Use the font atlas to pack them into a single texture:
(Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file and the code in ImFontAtlas for more details.)
```cpp
ImGuiIO& io = ImGui::GetIO();
ImFont* font0 = io.Fonts->AddFontDefault();
ImFont* font1 = io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels);
ImFont* font2 = io.Fonts->AddFontFromFileTTF("myfontfile2.ttf", size_in_pixels);
io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
// the first loaded font gets used by default
// use ImGui::PushFont()/ImGui::PopFont() to change the font at runtime
// Options
ImFontConfig config;
config.OversampleH = 2;
config.OversampleV = 1;
config.GlyphOffset.y -= 1.0f; // Move everything by 1 pixels up
config.GlyphExtraSpacing.x = 1.0f; // Increase spacing between characters
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_pixels, &config);
// Combine multiple fonts into one (e.g. for icon fonts)
static ImWchar ranges[] = { 0xf000, 0xf3ff, 0 };
ImFontConfig config;
config.MergeMode = true;
io.Fonts->AddFontDefault();
io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 16.0f, &config, ranges); // Merge icon font
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_pixels, NULL, &config, io.Fonts->GetGlyphRangesJapanese()); // Merge japanese glyphs
```
##### [Return to Index](#index)
---
### Q: How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?
When loading a font, pass custom Unicode ranges to specify the glyphs to load.
```cpp
// Add default Japanese ranges
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
// Or create your own custom ranges (e.g. for a game you can feed your entire game script and only build the characters the game need)
ImVector<ImWchar> ranges;
ImFontGlyphRangesBuilder builder;
builder.AddText("Hello world"); // Add a string (here "Hello world" contains 7 unique characters)
builder.AddChar(0x7262); // Add a specific character
builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
builder.BuildRanges(&ranges); // Build the final result (ordered ranges with all the unique characters submitted)
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", 16.0f, NULL, ranges.Data);
```
All your strings needs to use UTF-8 encoding. In C++11 you can encode a string literal in UTF-8
by using the u8"hello" syntax. Specifying literal in your source code using a local code page
(such as CP-923 for Japanese or CP-1251 for Cyrillic) will NOT work!
Otherwise you can convert yourself to UTF-8 or load text data from file already saved as UTF-8.
Text input: it is up to your application to pass the right character code by calling `io.AddInputCharacter()`.
The applications in examples/ are doing that.
Windows: you can use the WM_CHAR or WM_UNICHAR or WM_IME_CHAR message (depending if your app is built using Unicode or MultiByte mode).
You may also use MultiByteToWideChar() or ToUnicode() to retrieve Unicode codepoints from MultiByte characters or keyboard state.
Windows: if your language is relying on an Input Method Editor (IME), you copy the HWND of your window to io.ImeWindowHandle in order for
the default implementation of io.ImeSetInputScreenPosFn() to set your Microsoft IME position correctly.
##### [Return to Index](#index)
---
# Q&A: Concerns
### Q: Who uses Dear ImGui?
You may take a look at:
- [Quotes](https://github.com/ocornut/imgui/wiki/Quotes)
- [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui)
- [Gallery](https://github.com/ocornut/imgui/issues/2847)
##### [Return to Index](#index)
---
### Q: Can you create elaborate/serious tools with Dear ImGui?
Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might require you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
Dear ImGui is built to be efficient and scalable toward the needs for AAA-quality applications running all day. The IMGUI paradigm offers different opportunities for optimization that the more typical RMGUI paradigm.
##### [Return to Index](#index)
---
### Q: Can you reskin the look of Dear ImGui?
Somehow. You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Dear ImGui is NOT designed to create user interface for games, although with ingenious use of the low-level API you can do it.
A reasonably skinned application may look like (screenshot from [#2529](https://github.com/ocornut/imgui/issues/2529#issuecomment-524281119))
![minipars](https://user-images.githubusercontent.com/314805/63589441-d9794f00-c5b1-11e9-8d96-cfc1b93702f7.png)
##### [Return to Index](#index)
---
### Q: Why using C++ (as opposed to C)?
Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/cimgui/cimgui) by Sonoro1234 and Stephan Dilly. It is designed for creating binding to other languages. If possible, I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for various third-party bindings.
##### [Return to Index](#index)
---
# Q&A: Community
### Q: How can I help?
- Businesses: please reach out to `contact AT dearimgui.org` if you work in a place using Dear ImGui! We can discuss ways for your company to fund development via invoiced technical support, maintenance or sponsoring contacts. This is among the most useful thing you can do for Dear ImGui. With increased funding we can hire more people working on this project.
- Individuals: you can support continued maintenance and development via PayPal donations. See [README](https://github.com/ocornut/imgui/blob/master/docs/README.md).
- If you are experienced with Dear ImGui and C++, look at the [GitHub Issues](https://github.com/ocornut/imgui/issues), look at the [Wiki](https://github.com/ocornut/imgui/wiki), read [docs/TODO.txt](https://github.com/ocornut/imgui/blob/master/docs/TODO.txt) and see how you want to help and can help!
- Disclose your usage of Dear ImGui via a dev blog post, a tweet, a screenshot, a mention somewhere etc.
You may post screenshot or links in the [gallery threads](https://github.com/ocornut/imgui/issues/2847). Visuals are ideal as they inspire other programmers. Disclosing your use of dear imgui help the library grow credibility, and help other teams and programmers with taking decisions.
- If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues or sometimes incomplete PR.
##### [Return to Index](#index)

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dear imgui
FONTS DOCUMENTATION
Also read https://www.dearimgui.org/faq for more fonts related infos.
The code in imgui.cpp embeds a copy of 'ProggyClean.ttf' (by Tristan Grimmer),
a 13 pixels high, pixel-perfect font used by default.
We embed it font in source code so you can use Dear ImGui without any file system access.
You may also load external .TTF/.OTF files.
The files in this folder are suggested fonts, provided as a convenience.
Please read the FAQ: https://www.dearimgui.org/faq
Please use the Discord server: http://discord.dearimgui.org and not the Github issue tracker for basic font loading questions.
---------------------------------------
INDEX:
---------------------------------------
- Readme First / FAQ
- Fonts Loading Instructions
- Using Icons
- Using FreeType rasterizer
- Building Custom Glyph Ranges
- Using custom colorful icons
- Embedding Fonts in Source Code
- Credits/Licences for fonts included in repository
- Fonts Links
---------------------------------------
README FIRST / FAQ
---------------------------------------
- You can use the style editor ImGui::ShowStyleEditor() in the "Fonts" section to browse your fonts
and understand what's going on if you have an issue.
- Fonts are rasterized in a single texture at the time of calling either of io.Fonts->GetTexDataAsAlpha8()/GetTexDataAsRGBA32()/Build().
- Make sure your font ranges data are persistent and available at the time the font atlas is being built.
- Use C++11 u8"my text" syntax to encode literal strings as UTF-8. e.g.:
u8"hello"
u8"こんにちは" // this will be encoded as UTF-8
- If you want to include a backslash \ character in your string literal, you need to double them e.g. "folder\\filename".
Read FAQ for details.
---------------------------------------
FONTS LOADING INSTRUCTIONS
---------------------------------------
Load default font:
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontDefault();
Load .TTF/.OTF file with:
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
Load multiple fonts:
ImGuiIO& io = ImGui::GetIO();
ImFont* font1 = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
ImFont* font2 = io.Fonts->AddFontFromFileTTF("anotherfont.otf", size_pixels);
// Select font at runtime
ImGui::Text("Hello"); // use the default font (which is the first loaded font)
ImGui::PushFont(font2);
ImGui::Text("Hello with another font");
ImGui::PopFont();
For advanced options create a ImFontConfig structure and pass it to the AddFont function (it will be copied internally):
ImFontConfig config;
config.OversampleH = 2;
config.OversampleV = 1;
config.GlyphExtraSpacing.x = 1.0f;
ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, &config);
Combine two fonts into one:
// Load a first font
ImFont* font = io.Fonts->AddFontDefault();
// Add character ranges and merge into the previous font
// The ranges array is not copied by the AddFont* functions and is used lazily
// so ensure it is available at the time of building or calling GetTexDataAsRGBA32().
static const ImWchar icons_ranges[] = { 0xf000, 0xf3ff, 0 }; // Will not be copied by AddFont* so keep in scope.
ImFontConfig config;
config.MergeMode = true;
io.Fonts->AddFontFromFileTTF("DroidSans.ttf", 18.0f, &config, io.Fonts->GetGlyphRangesJapanese());
io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 18.0f, &config, icons_ranges);
io.Fonts->Build();
Font atlas is too large?
- If you have very large number of glyphs or multiple fonts, the texture may become too big for your graphics API.
- The typical result of failing to upload a texture is if every glyphs appears as white rectangles.
- In particular, using a large range such as GetGlyphRangesChineseSimplifiedCommon() is not recommended
unless you set OversampleH/OversampleV to 1 and use a small font size.
- Mind the fact that some graphics drivers have texture size limitation.
- If you are building a PC application, mind the fact that users may run on hardware with lower specs than yours.
Some solutions:
- 1) Reduce glyphs ranges by calculating them from source localization data.
You can use ImFontGlyphRangesBuilder for this purpose, this will be the biggest win!
- 2) You may reduce oversampling, e.g. config.OversampleH = config.OversampleV = 1, this will largely reduce your texture size.
- 3) Set io.Fonts.TexDesiredWidth to specify a texture width to minimize texture height (see comment in ImFontAtlas::Build function).
- 4) Set io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight; to disable rounding the texture height to the next power of two.
- Read about oversampling here: https://github.com/nothings/stb/blob/master/tests/oversample
Add a fourth parameter to bake specific font ranges only:
// Basic Latin, Extended Latin
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesDefault());
// Default + Selection of 2500 Ideographs used by Simplified Chinese
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesChineseSimplifiedCommon());
// Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs
io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
See "BUILDING CUSTOM GLYPH RANGES" section to create your own ranges.
Offset font vertically by altering the io.Font->DisplayOffset value:
ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
font->DisplayOffset.y = 1; // Render 1 pixel down
---------------------------------------
USING ICONS
---------------------------------------
Using an icon font (such as FontAwesome: http://fontawesome.io or OpenFontIcons. https://github.com/traverseda/OpenFontIcons)
is an easy and practical way to use icons in your Dear ImGui application.
A common pattern is to merge the icon font within your main font, so you can embed icons directly from your strings without
having to change fonts back and forth.
To refer to the icon UTF-8 codepoints from your C++ code, you may use those headers files created by Juliette Foucaut:
https://github.com/juliettef/IconFontCppHeaders
Those files contains a bunch of named #define which you can use to refer to specific icons of the font, e.g.:
#define ICON_FA_MUSIC "\xef\x80\x81"
#define ICON_FA_SEARCH "\xef\x80\x82"
Example Setup:
// Merge icons into default tool font
#include "IconsFontAwesome.h"
ImGuiIO& io = ImGui::GetIO();
io.Fonts->AddFontDefault();
ImFontConfig config;
config.MergeMode = true;
config.GlyphMinAdvanceX = 13.0f; // Use if you want to make the icon monospaced
static const ImWchar icon_ranges[] = { ICON_MIN_FA, ICON_MAX_FA, 0 };
io.Fonts->AddFontFromFileTTF("fonts/fontawesome-webfont.ttf", 13.0f, &config, icon_ranges);
Example Usage:
// Usage, e.g.
ImGui::Text("%s among %d items", ICON_FA_SEARCH, count);
ImGui::Button(ICON_FA_SEARCH " Search");
Important to understand: C string _literals_ can be concatenated at compilation time, e.g. "hello" " world"
ICON_FA_SEARCH is defined as a string literal so this is the same as "A" "B" becoming "AB"
See Links below for other icons fonts and related tools.
---------------------------------------
FREETYPE RASTERIZER, SMALL FONT SIZES
---------------------------------------
Dear ImGui uses imstb_truetype.h to rasterize fonts (with optional oversampling).
This technique and its implementation are not ideal for fonts rendered at _small sizes_, which may appear a
little blurry or hard to read.
There is an implementation of the ImFontAtlas builder using FreeType that you can use in the misc/freetype/ folder.
FreeType supports auto-hinting which tends to improve the readability of small fonts.
Note that this code currently creates textures that are unoptimally too large (could be fixed with some work).
Also note that correct sRGB space blending will have an important effect on your font rendering quality.
---------------------------------------
BUILDING CUSTOM GLYPH RANGES
---------------------------------------
You can use the ImFontGlyphRangesBuilder helper to create glyph ranges based on text input.
For example: for a game where your script is known, if you can feed your entire script to it and only build the characters the game needs.
ImVector<ImWchar> ranges;
ImFontGlyphRangesBuilder builder;
builder.AddText("Hello world"); // Add a string (here "Hello world" contains 7 unique characters)
builder.AddChar(0x7262); // Add a specific character
builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
builder.BuildRanges(&ranges); // Build the final result (ordered ranges with all the unique characters submitted)
io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, ranges.Data);
io.Fonts->Build(); // Build the atlas while 'ranges' is still in scope and not deleted.
---------------------------------------
USING CUSTOM COLORFUL ICONS
---------------------------------------
(This is a BETA api, use if you are familiar with dear imgui and with your rendering back-end)
You can use the ImFontAtlas::AddCustomRect() and ImFontAtlas::AddCustomRectFontGlyph() api to register rectangles
that will be packed into the font atlas texture. Register them before building the atlas, then call Build().
You can then use ImFontAtlas::GetCustomRectByIndex(int) to query the position/size of your rectangle within the
texture, and blit/copy any graphics data of your choice into those rectangles.
Pseudo-code:
// Add font, then register two custom 13x13 rectangles mapped to glyph 'a' and 'b' of this font
ImFont* font = io.Fonts->AddFontDefault();
int rect_ids[2];
rect_ids[0] = io.Fonts->AddCustomRectFontGlyph(font, 'a', 13, 13, 13+1);
rect_ids[1] = io.Fonts->AddCustomRectFontGlyph(font, 'b', 13, 13, 13+1);
// Build atlas
io.Fonts->Build();
// Retrieve texture in RGBA format
unsigned char* tex_pixels = NULL;
int tex_width, tex_height;
io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_width, &tex_height);
for (int rect_n = 0; rect_n < IM_ARRAYSIZE(rect_ids); rect_n++)
{
int rect_id = rects_ids[rect_n];
if (const ImFontAtlas::CustomRect* rect = io.Fonts->GetCustomRectByIndex(rect_id))
{
// Fill the custom rectangle with red pixels (in reality you would draw/copy your bitmap data here!)
for (int y = 0; y < rect->Height; y++)
{
ImU32* p = (ImU32*)tex_pixels + (rect->Y + y) * tex_width + (rect->X);
for (int x = rect->Width; x > 0; x--)
*p++ = IM_COL32(255, 0, 0, 255);
}
}
}
---------------------------------------
EMBEDDING FONTS IN SOURCE CODE
---------------------------------------
Compile and use 'binary_to_compressed_c.cpp' to create a compressed C style array that you can embed in source code.
See the documentation in binary_to_compressed_c.cpp for instruction on how to use the tool.
You may find a precompiled version binary_to_compressed_c.exe for Windows instead of demo binaries package (see README).
The tool can optionally output Base85 encoding to reduce the size of _source code_ but the read-only arrays in the
actual binary will be about 20% bigger.
Then load the font with:
ImFont* font = io.Fonts->AddFontFromMemoryCompressedTTF(compressed_data, compressed_data_size, size_pixels, ...);
or:
ImFont* font = io.Fonts->AddFontFromMemoryCompressedBase85TTF(compressed_data_base85, size_pixels, ...);
---------------------------------------
CREDITS/LICENSES FOR FONTS INCLUDED IN REPOSITORY
---------------------------------------
Some fonts are available in the misc/fonts/ folder:
Roboto-Medium.ttf
Apache License 2.0
by Christian Robertson
https://fonts.google.com/specimen/Roboto
Cousine-Regular.ttf
by Steve Matteson
Digitized data copyright (c) 2010 Google Corporation.
Licensed under the SIL Open Font License, Version 1.1
https://fonts.google.com/specimen/Cousine
DroidSans.ttf
Copyright (c) Steve Matteson
Apache License, version 2.0
https://www.fontsquirrel.com/fonts/droid-sans
ProggyClean.ttf
Copyright (c) 2004, 2005 Tristan Grimmer
MIT License
recommended loading setting: Size = 13.0, DisplayOffset.Y = +1
http://www.proggyfonts.net/
ProggyTiny.ttf
Copyright (c) 2004, 2005 Tristan Grimmer
MIT License
recommended loading setting: Size = 10.0, DisplayOffset.Y = +1
http://www.proggyfonts.net/
Karla-Regular.ttf
Copyright (c) 2012, Jonathan Pinhorn
SIL OPEN FONT LICENSE Version 1.1
---------------------------------------
FONTS LINKS
---------------------------------------
ICON FONTS
C/C++ header for icon fonts (#define with code points to use in source code string literals)
https://github.com/juliettef/IconFontCppHeaders
FontAwesome
https://fortawesome.github.io/Font-Awesome
OpenFontIcons
https://github.com/traverseda/OpenFontIcons
Google Icon Fonts
https://design.google.com/icons/
Kenney Icon Font (Game Controller Icons)
https://github.com/nicodinh/kenney-icon-font
IcoMoon - Custom Icon font builder
https://icomoon.io/app
REGULAR FONTS
Google Noto Fonts (worldwide languages)
https://www.google.com/get/noto/
Open Sans Fonts
https://fonts.google.com/specimen/Open+Sans
(Japanese) M+ fonts by Coji Morishita are free
http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/index-en.html
MONOSPACE FONTS (PIXEL PERFECT)
Proggy Fonts, by Tristan Grimmer
http://www.proggyfonts.net or http://upperbounds.net
Sweet16, Sweet16 Mono, by Martin Sedlak (Latin + Supplemental + Extended A)
https://github.com/kmar/Sweet16Font
Also include .inl file to use directly in dear imgui.
MONOSPACE FONTS (REGULAR)
Google Noto Mono Fonts
https://www.google.com/get/noto/
Typefaces for source code beautification
https://github.com/chrissimpkins/codeface
Programmation fonts
http://s9w.github.io/font_compare/
Inconsolata
http://www.levien.com/type/myfonts/inconsolata.html
Adobe Source Code Pro: Monospaced font family for user interface and coding environments
https://github.com/adobe-fonts/source-code-pro
Monospace/Fixed Width Programmer's Fonts
http://www.lowing.org/fonts/
Or use Arial Unicode or other Unicode fonts provided with Windows for full characters coverage (not sure of their licensing).

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dear imgui
=====
[![Build Status](https://github.com/ocornut/imgui/workflows/build/badge.svg)](https://github.com/ocornut/imgui/actions?workflow=build)
<sub>(This library is available under a free and permissive license, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out.)</sub>
Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
Individuals: support continued maintenance and development with [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S).
----
Dear ImGui is a **bloat-free graphical user interface library for C++**. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
Dear ImGui is designed to **enable fast iterations** and to **empower programmers** to create **content creation tools and visualization / debug tools** (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard.
| [Usage](#usage) - [How it works](#how-it-works) - [Demo](#demo) - [Integration](#integration) |
:----------------------------------------------------------: |
| [Upcoming changes](#upcoming-changes) - [Gallery](#gallery) - [Support, FAQ](#support-frequently-asked-questions-faq) - [How to help](#how-to-help) - [Sponsors](#sponsors) - [Credits](#credits) - [License](#license) |
| [Wiki](https://github.com/ocornut/imgui/wiki) - [Language & frameworks bindings](https://github.com/ocornut/imgui/wiki/Bindings) - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) - [User quotes](https://github.com/ocornut/imgui/wiki/Quotes) |
### Usage
**The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily compile in your application/engine. They are all the files in the root folder of the repository (imgui.cpp, imgui.h, imgui_demo.cpp, imgui_draw.cpp etc.).
**No specific build process is required**. You can add the .cpp files to your existing project.
You will need a backend to integrate Dear ImGui in your app. The backend passes mouse/keyboard/gamepad inputs and variety of settings to Dear ImGui, and is in charge of rendering the resulting vertices.
**Backends for a variety of graphics api and rendering platforms** are provided in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder, along with example applications. See the [Integration](#integration) section of this document for details. You may also create your own backend. Anywhere where you can render textured triangles, you can render Dear ImGui.
After Dear ImGui is setup in your application, you can use it from \_anywhere\_ in your program loop:
Code:
```cp
ImGui::Text("Hello, world %d", 123);
if (ImGui::Button("Save"))
MySaveFunction();
ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
```
Result:
<br>![sample code output (dark)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v175/capture_readme_styles_0001.png) ![sample code output (light)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v175/capture_readme_styles_0002.png)
<br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
Code:
```cpp
// Create a window called "My First Tool", with a menu bar.
ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
if (ImGui::BeginMenuBar())
{
if (ImGui::BeginMenu("File"))
{
if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
if (ImGui::MenuItem("Save", "Ctrl+S")) { /* Do stuff */ }
if (ImGui::MenuItem("Close", "Ctrl+W")) { my_tool_active = false; }
ImGui::EndMenu();
}
ImGui::EndMenuBar();
}
// Edit a color (stored as ~4 floats)
ImGui::ColorEdit4("Color", my_color);
// Plot some values
const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
// Display contents in a scrolling region
ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
ImGui::BeginChild("Scrolling");
for (int n = 0; n < 50; n++)
ImGui::Text("%04d: Some text", n);
ImGui::EndChild();
ImGui::End();
```
Result:
<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
Dear ImGui allows you **create elaborate tools** as well as very short-lived ones. On the extreme side of short-livedness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.
### How it works
Check out the Wiki's [About the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#About-the-IMGUI-paradigm) section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize superfluous state duplication, state synchronization and state retention from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces.
Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes required to render them is fairly small. Because Dear ImGui doesn't know or touch graphics state directly, you can call its functions anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase.
_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
### Demo
Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcasing variety of features and examples. The code is always available for reference in `imgui_demo.cpp`.
![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png)
You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
- [imgui-demo-binaries-20190715.zip](http://www.dearimgui.org/binaries/imgui-demo-binaries-20190715.zip) (Windows binaries, 1.72 WIP, built 2019/07/15, master branch, 5 executables)
The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with `style.ScaleAllSizes()`.
### Integration
On most platforms and when using C++, **you should be able to use a combination of the [imgui_impl_xxxx](https://github.com/ocornut/imgui/tree/master/examples) files without modification** (e.g. `imgui_impl_win32.cpp` + `imgui_impl_dx11.cpp`). If your engine supports multiple platforms, consider using more of the imgui_impl_xxxx files instead of rewriting them: this will be less work for you and you can get Dear ImGui running immediately. You can _later_ decide to rewrite a custom binding using your custom engine functions if you wish so.
Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer at ease with those concepts, it should take you less than two hours to integrate Dear ImGui in your custom engine. **Make sure to spend time reading the [FAQ](https://www.dearimgui.org/faq), comments, and some of the examples/ application!**
Officially maintained bindings (in repository):
- Renderers: DirectX9, DirectX10, DirectX11, DirectX12, OpenGL (legacy), OpenGL3/ES/ES2 (modern), Vulkan, Metal.
- Platforms: GLFW, SDL2, Win32, Glut, OSX.
- Frameworks: Emscripten, Allegro5, Marmalade.
Third-party bindings (see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/) page):
- Languages: C, C#/.Net, ChaiScript, D, Go, Haskell, Haxe/hxcpp, Java, JavaScript, Julia, Kotlin, Lua, Odin, Pascal, PureBasic, Python, Ruby, Rust, Swift...
- Frameworks: 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.
- Note that C bindings ([cimgui](https://github.com/cimgui/cimgui)) are auto-generated, you can use its json/lua output to generate bindings for other languages.
Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
### Upcoming Changes
Some of the goals for 2020 are:
- Finish work on docking, tabs. (see [#2109](https://github.com/ocornut/imgui/issues/2109), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
- Finish work on multiple viewports / multiple OS windows. (see [#1542](https://github.com/ocornut/imgui/issues/1542), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
- Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
- Finish work on new Tables API (to replace Columns). (see [#2957](https://github.com/ocornut/imgui/issues/2957))
- Add an automation and testing system, both to test the library and end-user apps. (see [#435](https://github.com/ocornut/imgui/issues/435))
- Make the examples look better, improve styles, improve font support, make the examples hi-DPI and multi-DPI aware.
### Gallery
For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/2847)!
Custom engine
[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
Custom engine
[![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
[Tracy Profiler](https://bitbucket.org/wolfpld/tracy)
![tracy profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v173/tracy_profiler.jpg)
### Support, Frequently Asked Questions (FAQ)
Most common questions will be answered by the [Frequently Asked Questions (FAQ)](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md) page.
See: [Wiki](https://github.com/ocornut/imgui/wiki) for many links, references, articles.
See: [Articles about the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#Articles-about-the-IMGUI-paradigm) to read/learn about the Immediate Mode GUI paradigm.
If you are new to Dear ImGui and have issues with: compiling, linking, adding fonts, wiring inputs, running or displaying Dear ImGui: you can use [Discord server](http://discord.dearimgui.org).
Otherwise, for any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues. Please read and fill the New Issue template carefully.
Paid private support is available for business customers (E-mail: _contact @ dearimgui dot org_).
**Which version should I get?**
I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
You may also peak at the [Multi-Viewport](https://github.com/ocornut/imgui/issues/1542) and [Docking](https://github.com/ocornut/imgui/issues/2109) features in the `docking` branch. Many projects are using this branch and it is kept in sync with master regularly.
**Who uses Dear ImGui?**
See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes), [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors), [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for an idea of who is using Dear ImGui. Please add your game/software if you can! Also see the [Gallery Threads](https://github.com/ocornut/imgui/issues/2847)!
How to help
-----------
**How can I help?**
- You may participate in the [Discord server](http://discord.dearimgui.org), [GitHub forum/issues](https://github.com/ocornut/imgui/issues).
- You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest in the end-users and also to ease the maintainer into understanding and accepting it.
- See [Help wanted](https://github.com/ocornut/imgui/wiki/Help-Wanted) on the [Wiki](https://github.com/ocornut/imgui/wiki/) for some more ideas.
- Have your company financially support this project.
**How can I help financing further development of Dear ImGui?**
Your contributions are keeping this project alive. The library is available under a free and permissive license, but continued maintenance and development are a full-time endeavor and I would like to grow the team. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced technical support and maintenance contracts. Thank you!
Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
<br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
Individuals: support continued maintenance and development with [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S).
Sponsors
--------
Ongoing Dear ImGui development is financially supported by users and private sponsors, recently:
*Platinum-chocolate sponsors*
- [Blizzard](https://careers.blizzard.com/en-us/openings/engineering/all/all/all/1), [Google](https://github.com/google/filament), [Nvidia](https://developer.nvidia.com/nvidia-omniverse), [Ubisoft](https://montreal.ubisoft.com/en/ubisoft-sponsors-user-interface-library-for-c-dear-imgui/)
*Double-chocolate and Salty caramel sponsors*
- [Activision](https://careers.activision.com/c/programmingsoftware-engineering-jobs), [DotEmu](http://www.dotemu.com), [Framefield](http://framefield.com), [Hexagon](https://hexagonxalt.com/the-technology/xalt-visualization), [Kylotonn](https://www.kylotonn.com), [Media Molecule](http://www.mediamolecule.com), [Mesh Consultants](https://www.meshconsultants.ca), [Mobigame](http://www.mobigame.net), [Nadeo](https://www.nadeo.com), [Supercell](http://www.supercell.com), [Remedy Entertainment](https://www.remedygames.com/), [Unit 2 Games](https://unit2games.com/)
From November 2014 to December 2019, ongoing development has also been financially supported by its users on Patreon and through individual donations. Please see [detailed list of Dear ImGui supporters](https://github.com/ocornut/imgui/wiki/Sponsors).
**THANK YOU to all past and present supporters for helping to keep this project alive and thriving!**
Dear ImGui is using software and services provided free of charge for open source projects:
- [PVS-Studio](https://www.viva64.com/en/b/0570/) for static analysis.
- [GitHub actions](https://github.com/features/actions) for continuous integration systems.
- [OpenCppCoverage](https://github.com/OpenCppCoverage/OpenCppCoverage) for code coverage analysis.
Credits
-------
Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com) (Vita).
I first discovered the IMGUI paradigm at [Q-Games](http://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it.
Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
Embeds [stb_textedit.h, stb_truetype.h, stb_rect_pack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
License
-------
Dear ImGui is licensed under the MIT License, see [LICENSE.txt](https://github.com/ocornut/imgui/blob/master/LICENSE.txt) for more information.

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dear imgui
ISSUES & TODO LIST
Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
- doc/test: add a proper documentation+regression testing system (#435)
- doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
- doc/tips: tips of the day: website? applet in imgui_club?
- doc/wiki: work on the wiki https://github.com/ocornut/imgui/wiki
- window: preserve/restore relative focus ordering (persistent or not) (#2304) -> also see docking reference to same #.
- window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
- window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
- window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
- window: begin with *p_open == false could return false.
- window: get size/pos helpers given names (see discussion in #249)
- window: a collapsed window can be stuck behind the main menu bar?
- window: when window is very small, prioritize resize button over close button.
- window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
- window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
- window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
- window: expose contents size. (#1045)
- window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
- window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- window: investigate better auto-positioning for new windows.
- window: top most window flag? (#2574)
- window: the size_on_first_use path of Begin() can probably be removed
- window/size: manually triggered auto-fit (double-click on grip) shouldn't resize window down to viewport size?
- window/opt: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. -> this may require enforcing that it is illegal to submit contents if Begin returns false.
- window/child: background options for child windows, border option (disable rounding).
- window/child: allow resizing of child windows (possibly given min/max for each axis?.)
- window/child: the first draw command of a child window could be moved into the current draw command of the parent window (unless child+tooltip?).
- window/child: border could be emitted in parent as well.
- window/child: allow SetNextWindowContentSize() to work on child windows.
- window/clipping: some form of clipping when DisplaySize (or corresponding viewport) is zero.
- window/tab: add a way to signify that a window or docked window requires attention (e.g. blinking title bar).
! scrolling: exposing horizontal scrolling with Shift+Wheel even when scrollbar is disabled expose lots of issues (#2424, #1463)
- scrolling: while holding down a scrollbar, try to keep the same contents visible (at least while not moving mouse)
- scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
- scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
- scrolling/style: shadows on scrollable areas to denote that there is more contents (see e.g. DaVinci Resolve ui)
- drawdata: make it easy to clone (or swap?) a full ImDrawData so user can easily save that data if they use threaded rendering. (e.g. #2646)
! drawlist: add calctextsize func to facilitate consistent code from user pov (currently need to use ImGui or ImFont alternatives!)
- drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
- drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
- drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
- drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- drawlist: non-AA strokes have gaps between points (#593, #288), glitch especially on RenderCheckmark() and ColorPicker4().
- drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
- drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
- drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
- drawlist: AddRect vs AddLine position confusing (#2441)
- drawlist: channel splitter should be external helper and not stored in ImDrawList.
- drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
- drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
- drawlist/opt: thick AA line could be doable in same number of triangles as 1.0 AA line by storing gradient+full color in atlas.
- main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
- main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
- main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
- widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
- widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- widgets: add always-allow-overlap mode. This should perhaps be the default? one problem is that highlight after mouse-wheel scrolling gets deferred, makes scrolling more flickery.
- widgets: start exposing PushItemFlag() and ImGuiItemFlags
- widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
- widgets: activate by identifier (trigger button, focus given id)
- widgets: a way to represent "mixed" values, so e.g. all values replaced with *, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed) (#2644)
- widgets: selectable: generic BeginSelectable()/EndSelectable() mechanism.
- widgets: selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
- widgets: checkbox: checkbox with custom glyph inside frame.
- widgets: coloredit: keep reporting as active when picker is on?
- widgets: group/scalarn functions: expose more per-component information. e.g. store NextItemData.ComponentIdx set by scalarn function, groups can expose them back somehow.
- input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile.
- input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- input text: expose CursorPos in char filter event (#816)
- input text: try usage idiom of using InputText with data only exposed through get/set accessors, without extraneous copy/alloc. (#3009)
- input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
- input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
- input text: hover tooltip could show unclamped text
- input text: option to Tab after an Enter validation.
- input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
- input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
- input text: add flag (e.g. ImGuiInputTextFlags_EscapeClearsBuffer) to clear instead of revert. what to do with focus? (also see #2890)
- input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
- input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- input text: decorrelate layout from inputs - e.g. what's the easiest way to implement a nice IP/Mac address input editor?
- input text: global callback system so user can plug in an expression evaluator easily. (#1691)
- input text: force scroll to end or scroll to a given line/contents (so user can implement a log or a search feature)
- input text: a way to preview completion (e.g. disabled text completing from the cursor)
- input text: a side bar that could e.g. preview where errors are. probably left to the user to draw but we'd need to give them the info there.
- input text: a way for the user to provide syntax coloring.
- input text: Shift+TAB with ImGuiInputTextFlags_AllowTabInput could eat preceding blanks, up to tab_count.
- input text: facilitate patterns like if (InputText(..., obj.get_string_ref()) { obj.set_string(...); } relying on internally held buffer.
- input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- input text multi-line: support for cut/paste without selection (cut/paste the current line)
- input text multi-line: line numbers? status bar? (follow up on #200)
- input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
- input text multi-line: better horizontal scrolling support (#383, #1224)
- input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
- input number: optional range min/max for Input*() functions
- input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
- input number: use mouse wheel to step up/down
- input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
- layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
- layout: horizontal layout helper (#97)
- layout: horizontal flow until no space left (#404)
- layout: more generic alignment state (left/right/centered) for single items?
- layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- layout: null layout mode were items are not rendered but user can query GetItemRectMin()/Max/Size.
- layout: (R&D) local multi-pass layout mode.
- layout: (R&D) bind authored layout data (created by an off-line tool), items fetch their pos/size at submission, self-optimize data structures to stable linear access.
- group: BeginGroup() needs a border option. (~#1496)
- group: IsHovered() after EndGroup() covers whole aabb rather than the intersection of individual items. Is that desirable?
- group: merge deactivation/activation within same group (fwd WasEdited flag). (#2550)
- columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
- columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- columns: headers. re-orderable. (#513, #125)
- columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- columns: option to alternate background colors on odd/even scanlines.
- columns: allow columns to recurse.
- columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them.
- columns: sizing is lossy when columns width is very small (default width may turn negative etc.)
- columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
- columns: flag to add horizontal separator above/below?
- columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
!- color: the color conversion helpers/types are a mess and needs sorting out.
- color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
- plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
- plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
- plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
- plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
- plot: option/feature: draw the zero line
- plot: option/feature: draw grid, vertical markers
- plot: option/feature: draw unit
- plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
- clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
- clipper: ability to disable the clipping through a simple flag/bool.
- clipper: ability to run without knowing full count in advance.
- clipper: horizontal clipping support. (#2580)
- separator: expose flags (#759)
- separator: width, thickness, centering (#1643)
- splitter: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- dock: merge docking branch (#2109)
- dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
- tabs: make EndTabBar fail if users doesn't respect BeginTabBar return value, for consistency/future-proofing.
- tabs: persistent order/focus in BeginTabBar() api (#261, #351)
- tabs: TabItem could honor SetNextItemWidth()?
- tabs: explicit api (even if internal) to cleanly manipulate tab order.
- tabs: Mouse wheel over tab bar could scroll? (#2702)
- image/image button: misalignment on padded/bordered button?
- image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- image button: not taking an explicit id can be problematic. (#2464, #1390)
- button: provide a button that looks framed. (?)
- slider/drag: ctrl+click when format doesn't include a % character.. disable? display underlying value in default format? (see TempInputTextScalar)
- slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
- slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
- slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
- slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
- slider: relative dragging? + precision dragging
- slider: step option (#1183)
- slider style: fill % of the bar instead of positioning a drag.
- knob: rotating knob widget (#942)
- drag float: power/logarithmic slider and drags are weird. (#1316)
- drag float: up/down axis
- drag float: power != 0.0f with current value being outside the range keeps the value stuck.
- drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
- combo: use clipper: make it easier to disable clipper with a single flag.
- combo: flag for BeginCombo to not return true when unchanged (#1182)
- combo: a way/helper to customize the combo preview (#1658)
- combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- listbox: refactor and clean the begin/end api
- listbox: multiple selection.
- listbox: unselect option (#1208)
- listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
- listbox: user may want to initial scroll to focus on the one selected value?
- listbox: expose hovered item for a basic ListBox
- listbox: keyboard navigation.
- listbox: disable capturing mouse wheel if the listbox has no scrolling. (#1681)
- listbox: scrolling should track modified selection.
- listbox: future api should allow to enable horizontal scrolling (#2510)
!- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- popups/modal: make modal title bar blink when trying to click outside the modal
- popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
- popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
- popups: clicking outside (to close popup) and holding shouldn't drag window below.
- popups: add variant using global identifier similar to Begin/End (#402)
- popups: border options. richer api like BeginChild() perhaps? (#197)
- tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
- tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485)
- tooltip: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers.
- menus: menu bars inside modal windows are acting weird.
- status-bar: add a per-window status bar helper similar to what menu-bar does.
- shortcuts: local-style shortcut api, e.g. parse "&Save"
- shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
- shortcuts: programmatically access shortcuts "Focus("&Save"))
- menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer.
- menus: could merge draw call in most cases (how about storing an optional aabb in ImDrawCmd to move the burden of merging in a single spot).
- tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
- tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
- tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
- tree node: tweak color scheme to distinguish headers from selected tree node (#581)
- tree node: leaf/non-leaf highlight mismatch.
- tree node/opt: could avoid formatting when clipped (flag assuming we don't care about width/height, assume single line height?)
- settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
- settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- settings/persistence: helpers to make TreeNodeBehavior persist (even during dev!) - may need to store some semantic and/or data type in ImGuiStoragePair
- style: better default styles. (#707)
- style: add a highlighted text color (for headers, etc.)
- style: border types: out-screen, in-screen, etc. (#447)
- style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
- style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
- style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
- style: global scale setting.
- style: FramePadding could be different for up vs down (#584)
- style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
- style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
- style editor: color child window height expressed in multiple of line height.
- log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
- log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
- log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
- log: obsolete LogButtons() all together.
- log: LogButtons() options for specifying depth and/or hiding depth slider
- log: enabling log ends up pushing and growing vertices buffersbecause we don't distinguish layout vs render clipping
- filters: set a current filter that tree node can automatically query to hide themselves
- filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
- filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
- drag and drop: fix/support/options for overlapping drag sources.
- drag and drop: releasing a drop shows the "..." tooltip for one frame - since e13e598 (#1725)
- drag and drop: drag source on a group object (would need e.g. an invisible button covering group in EndGroup) https://twitter.com/paniq/status/1121446364909535233
- drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov. (see 2018/01/11 post in #143)
- drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
- drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
- drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- drag and drop: demo with reordering nodes (in a list, or a tree node). (#143)
- drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- drag and drop: allow for multiple payload types. (#143)
- drag and drop: make payload optional? payload promise? (see 2018/01/11 post in #143)
- drag and drop: (#143) "both an in-process pointer and a promise to generate a serialized version, for whether the drag ends inside or outside the same process"
- drag and drop: feedback when hovering a region blocked by modal (mouse cursor "NO"?)
- node/graph editors (#306) (also see https://github.com/ocornut/imgui/wiki#node-editors)
- pie menus patterns (#434)
- markup: simple markup language for color change? (#902)
- text: selectable text (for copy) as a generic feature (ItemFlags?)
- text: proper alignment options in imgui_internal.h
- text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
- text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
- text: refactor TextUnformatted (or underlying function) to more explicitly request if we need width measurement or not
- text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
- text/wrapped: should be a more first-class citizen, e.g. wrapped text within a Selectable with known width.
- text/wrapped: custom separator for text wrapping. (#3002)
- text/wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
- font: arbitrary line spacing. (#2945)
- font: MergeMode: flags to select overwriting or not (this is now very easy with refactored ImFontAtlasBuildWithStbTruetype)
- font: free the Alpha buffer if user only requested RGBA.
!- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
- font: for the purpose of RenderTextEllipsis(), it might be useful that CalcTextSizeA() can ignore the trailing padding?
- font: a CalcTextHeight() helper could run faster than CalcTextSize().y
- font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data
- font: remove ID from CustomRect registration, it seems unnecessary!
- font: make it easier to submit own bitmap font (same texture, another texture?). (#2127, #2575)
- font: PushFontSize API (#1018)
- font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
- font: storing MinAdvanceX per font would allow us to skip calculating line width (under a threshold of character count) in loops looking for block width
- font/demo: add tools to show glyphs used by a text blob, display U16 value, list missing glyphs.
- font/demo: demonstrate use of ImFontGlyphRangesBuilder.
- font/atlas: add a missing Glyphs.reserve()
- font/atlas: incremental updates
- font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
- font/draw: need to be able to specify wrap start position.
- font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- font/draw: underline, squiggle line rendering helpers.
- font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct), would save on cache line.
- font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
- font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- font: fix AddRemapChar() to work before atlas has been built.
- font: support for unicode codepoints higher than 0xFFFF? (pr #2815)
- font: (api breaking) remove "TTF" from symbol names. also because it now supports OTF.
- font/opt: Considering storing standalone AdvanceX table as 16-bit fixed point integer?
- font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16 bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
- nav: some features such as PageUp/Down/Home/End should probably work without ImGuiConfigFlags_NavEnableKeyboard? (where do we draw the line?)
! nav: never clear NavId on some setup (e.g. gamepad centric)
- nav: code to focus child-window on restoring NavId appears to have issue: e.g. when focus change is implicit because of window closure.
- nav: configuration flag to disable global shortcuts (currently only CTRL-Tab) ?
- nav: Home/End behavior when navigable item is not fully visible at the edge of scrolling? should be backtrack to keep item into view?
- nav: NavScrollToBringItemIntoView() with item bigger than view should focus top-right? Repro: using Nav in "About Window"
- nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- nav: patterns to make it possible for arrows key to update selection
- nav: restore/find nearest NavId when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
- nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- nav: NavFlattened: ESC on a flattened child should select something.
- nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
- nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
- nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- nav/treenode: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- nav/menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- nav/menus: allow pressing Menu to leave a sub-menu.
- nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB) or last focused window menu bar?
- nav/menus: when using the main menu bar, even though we restore focus after, the underlying window loses its title bar highlight during menu manipulation. could we prevent it?
- nav/menus: main menu bar currently cannot restore a NULL focus. Could save NavWindow at the time of being focused, similarly to what popup do?
- nav/menus: Alt,Up could open the first menu (e.g. "File") currently it tends to nav into the window/collapse menu. Do do that we would need custom transition?
- nav/windowing: configure fade-in/fade-out delay on Ctrl+Tab?
- nav/windowing: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- nav: simulate right-click or context activation? (SHIFT+F10)
- nav: tabs should go through most/all widgets (in submission order?).
- nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
- nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
- nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
- focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
- focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
- focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
- inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
- inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
- inputs: support track pad style scrolling & slider edit.
- inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
- inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
- inputs/scrolling: support for smooth scrolling (#2462, #2569)
- misc: idle: expose "woken up" boolean (set by inputs) and/or animation time (for cursor blink) for back-end to be able stop refreshing easily.
- misc: idle: if cursor blink if the _only_ visible animation, core imgui could rewrite vertex alpha to avoid CPU pass on ImGui:: calls.
- misc: idle: if cursor blink if the _only_ visible animation, could even expose a dirty rectangle that optionally can be leverage by some app to render in a smaller viewport, getting rid of much pixel shading cost.
- misc: no way to run a root-most GetID() with ImGui:: api since there's always a Debug window in the stack. (mentioned in #2960)
- misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
- misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
- misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- misc: use more size_t in public api?
- misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683)
- misc: possible compile-time support for wchar_t instead of char*?
- remote: make a system like RemoteImGui first-class citizen/project (#75)
- demo: find a way to demonstrate textures in the examples application, as it such a common issue for new users.
- demo: demonstrate using PushStyleVar() in more details.
- demo: add vertical separator demo
- demo: add virtual scrolling example?
- demo: demonstrate Plot offset
- demo: window size constraint: square demo is broken when resizing from edges (#1975), would need to rework the callback system to solve this
- examples: window minimize, maximize (#583)
- examples: provide a zero frame-rate/idle example.
- examples: dx11/dx12: try to use new swapchain blit models (#2970)
- backends: apple: example_apple should be using modern GL3.
- backends: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- backends: opengl: rename imgui_impl_opengl2 to impl_opengl_legacy and imgui_impl_opengl3 to imgui_impl_opengl? (#1900)
- backends: opengl: could use a single vertex buffer and glBufferSubData for uploads?
- backends: opengl: explicitly disable GL_STENCIL_TEST in bindings.
- backends: opengl: consider gl_lite loader https://github.com/ApoorvaJ/Papaya/blob/3808e39b0f45d4ca4972621c847586e4060c042a/src/libs/gl_lite.h
- backends: vulkan: viewport: support for synchronized swapping of multiple swap chains.
- backends: bgfx: https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- backends: mscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
- optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
- optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
- optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
- optimization: fully covered window (covered by another with non-translucent bg + WindowRounding worth of padding) may want to clip rendering.
- optimization: use another hash function than crc32, e.g. FNV1a
- optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- optimization: turn some the various stack vectors into statically-sized arrays

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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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('0' + (((n) / 10000)%10)), \
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('0' + ((n)>>24 & 0xF)), \
('0' + ((n)>>20 & 0xF)), \
('0' + ((n)>>16 & 0xF)), \
('0' + ((n)>>12 & 0xF)), \
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('0' + ((n)>>4 & 0xF)), \
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'I', 'N', 'F', 'O', ':',
'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
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int require = 0;
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require += info_platform[argc];
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#ifdef COMPILER_VERSION_MAJOR
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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.

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# 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}")

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# 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
```

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//-----------------------------------------------------------------------------
// 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

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// 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;
}

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# 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.)

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#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

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imgui-submodule/imgui/examples/example_apple_metal/Shared/AppDelegate.m Normal file
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#import "AppDelegate.h"
@implementation AppDelegate
#if TARGET_OS_OSX
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
return YES;
}
#endif
@end

8
imgui-submodule/imgui/examples/example_apple_metal/Shared/Renderer.h Normal file
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#import <MetalKit/MetalKit.h>
@interface Renderer : NSObject <MTKViewDelegate>
-(nonnull instancetype)initWithView:(nonnull MTKView *)view;
@end

129
imgui-submodule/imgui/examples/example_apple_metal/Shared/Renderer.mm Normal file
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#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

19
imgui-submodule/imgui/examples/example_apple_metal/Shared/ViewController.h Normal file
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@ -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

129
imgui-submodule/imgui/examples/example_apple_metal/Shared/ViewController.mm Normal file
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#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

22
imgui-submodule/imgui/examples/example_apple_metal/Shared/main.m Normal file
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@ -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

539
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32
imgui-submodule/imgui/examples/example_apple_metal/macOS/Info-macOS.plist Normal file
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<?xml version="1.0" encoding="UTF-8"?>
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<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>

326
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279
imgui-submodule/imgui/examples/example_apple_opengl2/main.mm Normal file
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// 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);
}

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# 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`

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// 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);
}

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<!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>

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// 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;
}

3
imgui-submodule/imgui/examples/example_glfw_opengl2/build_win32.bat Normal file
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@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

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// 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;
}

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@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

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// 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;
}

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# 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})

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imgui-submodule/imgui/examples/example_glfw_vulkan/build_win32.bat Normal file
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@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

7
imgui-submodule/imgui/examples/example_glfw_vulkan/build_win64.bat Normal file
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@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

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imgui-submodule/imgui/examples/example_glfw_vulkan/gen_spv.sh Executable file
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#!/bin/bash
glslangValidator -V -x -o glsl_shader.frag.u32 glsl_shader.frag
glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert

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imgui-submodule/imgui/examples/example_glfw_vulkan/glsl_shader.frag Normal file
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#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);
}

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imgui-submodule/imgui/examples/example_glfw_vulkan/glsl_shader.vert Normal file
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#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);
}

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// 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;
}

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// 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;
}

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# 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

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// 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;
}

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#!/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
}

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@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

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// 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;
}

8
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@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

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// 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; }
}

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// 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;
}

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# 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
```

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@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

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// 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;
}

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# 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
```

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@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

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// 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;
}

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// 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;
}

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@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

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// 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);
}

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@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

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// 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);
}

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@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

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// 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);
}

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imgui-submodule/imgui/examples/example_win32_directx9/build_win32.bat Normal file
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@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

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imgui-submodule/imgui/examples/example_win32_directx9/main.cpp Normal file
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// 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);
}

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// 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();
}

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// 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();

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// 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();
}

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// 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();

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// 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();
}

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// 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();

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// 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();
}

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imgui-submodule/imgui/examples/imgui_impl_dx12.h Normal file
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// 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();

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