From f42d61192a9400c6d0154a7c3c3cea3668324050 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20H=C3=BCttel?= <mario.huettel@gmx.net>
Date: Mon, 18 Apr 2022 14:17:21 +0200
Subject: [PATCH] Add preview rendering skeleton

---
 CMakeLists.txt                            | 16 +++++++++++++++-
 plugins/CMakeLists.txt                    |  1 +
 plugins/plugin-example/CMakeLists.txt     |  2 +-
 preview-rendering/CMakeLists.txt          |  7 +++++++
 preview-rendering/src/preview-rendering.c |  4 ++++
 test/CMakeLists.txt                       |  2 +-
 6 files changed, 29 insertions(+), 3 deletions(-)
 create mode 100644 preview-rendering/CMakeLists.txt
 create mode 100644 preview-rendering/src/preview-rendering.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8a7d30a..818be16 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,7 @@
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+endif (POLICY CMP0048)
+
 project(gds-render LANGUAGES C)
 
 if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
@@ -24,7 +28,7 @@ if(NOT WIN32)
   set(BoldWhite   "${Esc}[1;37m")
 endif()
 
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.0)
 find_package(PkgConfig REQUIRED)
 pkg_search_module(GLIB REQUIRED glib-2.0)
 pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
@@ -81,6 +85,12 @@ set(FORT_ENABLE_TESTING OFF CACHE INTERNAL "")
 
 add_subdirectory(3rdparty/libfort)
 
+if(OPENGL_PREVIEW)
+	message("${Green}OpenGL preview activated${ColorReset}")
+	add_definitions(-DGDS_RENDER_OPGENGL_PREVIEW)
+	add_subdirectory(preview-rendering)
+endif(OPENGL_PREVIEW)
+
 link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
 add_definitions(${GLIB2_CFLAGS_OTHER})
 
@@ -88,6 +98,10 @@ add_executable(${PROJECT_NAME} ${SOURCE} ${SOURCE_GENERATED})
 add_dependencies(${PROJECT_NAME} glib-resources)
 add_dependencies(${PROJECT_NAME} version)
 add_dependencies(${PROJECT_NAME} translations)
+if(OPENGL_PREVIEW)
+	add_dependencies(${PROJECT_NAME} opengl-preview)
+	target_link_libraries(${PROJECT_NAME} opengl-preview)
+endif(OPENGL_PREVIEW)
 
 install (TARGETS ${PROJECT_NAME} 
 	RUNTIME	
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index 5064828..5e4d721 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -1,2 +1,3 @@
 add_subdirectory(plugin-example)
 add_custom_target(plugins DEPENDS pluginexample)
+cmake_minimum_required(VERSION 3.0)
diff --git a/plugins/plugin-example/CMakeLists.txt b/plugins/plugin-example/CMakeLists.txt
index 40637e9..f79930c 100644
--- a/plugins/plugin-example/CMakeLists.txt
+++ b/plugins/plugin-example/CMakeLists.txt
@@ -1,5 +1,5 @@
 project(pluginexample)
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.0)
 find_package(PkgConfig REQUIRED)
 pkg_search_module(PYTHON REQUIRED python3)
 
diff --git a/preview-rendering/CMakeLists.txt b/preview-rendering/CMakeLists.txt
new file mode 100644
index 0000000..a67e8ab
--- /dev/null
+++ b/preview-rendering/CMakeLists.txt
@@ -0,0 +1,7 @@
+project(opengl-preview)
+cmake_minimum_required(VERSION 3.0)
+
+aux_source_directory("src" SRCS)
+
+add_library(${PROJECT_NAME} STATIC ${SRCS})
+target_include_directories(${PROJECT_NAME} PUBLIC "include")
diff --git a/preview-rendering/src/preview-rendering.c b/preview-rendering/src/preview-rendering.c
new file mode 100644
index 0000000..816849b
--- /dev/null
+++ b/preview-rendering/src/preview-rendering.c
@@ -0,0 +1,4 @@
+int foobar(void)
+{
+	return 42;
+}
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index b4c871c..03323bf 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,4 +1,5 @@
 project(gds-render-test)
+cmake_minimum_required(VERSION 3.0)
 
 add_custom_target(test "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}" "-r compact" "-s" DEPENDS ${PROJECT_NAME})
 
@@ -22,7 +23,6 @@ if(NOT WIN32)
   set(BoldWhite   "${Esc}[1;37m")
 endif()
 
-cmake_minimum_required(VERSION 2.8)
 find_package(PkgConfig REQUIRED)
 
 include_directories("${CMAKE_CURRENT_SOURCE_DIR}/catch-framework")