Add SDL2+Vulkan example

backend_test/example_sdl_vulkan/CMakeLists.txt

@@ -0,0 +1,99 @@
+Project(cimgui_sdl_vk)
+cmake_minimum_required(VERSION 2.8)
+if(WIN32) # to make mingw work as all the others
+set(CMAKE_SHARED_LIBRARY_PREFIX "")
+endif(WIN32)
+# general settings
+
+
+if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/../../imgui/backends)
+	set(BACKENDS_FOLDER "../../imgui/backends/")
+else()
+	set(BACKENDS_FOLDER "../../imgui/examples/")
+endif()
+
+if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/../../imgui/imgui_tables.cpp)
+	set(TABLES_SOURCE "../../imgui/imgui_tables.cpp")
+else()
+	set(TABLES_SOURCE "")
+endif()
+
+include_directories(../../imgui)
+add_definitions("-DIMGUI_DISABLE_OBSOLETE_FUNCTIONS=1")
+
+include_directories(../../)
+set(IMGUI_SOURCES ../../cimgui.cpp
+../../imgui/imgui.cpp
+../../imgui/imgui_draw.cpp
+../../imgui/imgui_demo.cpp
+../../imgui/imgui_widgets.cpp
+${TABLES_SOURCE}
+)
+
+set(IMGUI_SOURCES_sdl)
+set(IMGUI_LIBRARIES )
+
+if (WIN32)
+    add_definitions("-DIMGUI_IMPL_API=extern \"C\" __declspec\(dllexport\)")
+else(WIN32)
+    add_definitions("-DIMGUI_IMPL_API=extern \"C\" ")
+endif(WIN32)
+
+#optional adding freetype
+option(IMGUI_FREETYPE "add Freetype2" OFF)
+
+if(IMGUI_FREETYPE)
+	FIND_PACKAGE(freetype REQUIRED PATHS ${FREETYPE_PATH})
+	list(APPEND IMGUI_LIBRARIES freetype)
+	list(APPEND IMGUI_SOURCES ../../imgui/misc/freetype/imgui_freetype.cpp)
+	add_definitions("-DCIMGUI_FREETYPE=1")
+endif(IMGUI_FREETYPE)
+
+# vulkan
+find_package(Vulkan REQUIRED FATAL_ERROR)
+list(APPEND IMGUI_LIBRARIES Vulkan::Vulkan)
+list(APPEND IMGUI_SOURCES ${BACKENDS_FOLDER}imgui_impl_vulkan.cpp)
+
+#sdl2
+list(APPEND IMGUI_SOURCES ${BACKENDS_FOLDER}imgui_impl_sdl.cpp)
+if(DEFINED SDL_PATH)
+	message(STATUS "SDL_PATH defined as " ${SDL_PATH})
+	FIND_PACKAGE(SDL2 PATHS ${SDL_PATH})
+else(DEFINED SDL_PATH)
+	# If SDL_PATH is not set, fallback and attempt to find SDL cmake script at a default location
+	find_package(SDL2)
+endif(DEFINED SDL_PATH)
+
+if(SDL2_FOUND)
+	get_target_property(SDL_INCLUDE SDL2::SDL2 INTERFACE_INCLUDE_DIRECTORIES)
+	message(STATUS "sdlinclude is " ${SDL_INCLUDE})
+	if ("${SDL_INCLUDE}" STREQUAL "" OR "${SDL_INCLUDE}" STREQUAL "SDL_INCLUDE-NOTFOUND") #if not found latest SDL2 cmake config use older
+		message(STATUS "sdlinclude2 is " ${SDL2_INCLUDE_DIRS})
+		include_directories(${SDL2_INCLUDE_DIRS})
+		set(IMGUI_SDL_LIBRARY ${SDL2_LIBRARIES})
+		message(STATUS IMGUI_SDL_LIBRARY ${SDL2_LIBRARIES})
+	else()#use new one SDL2 config
+		include_directories(${SDL_INCLUDE})
+		set(IMGUI_SDL_LIBRARY SDL2::SDL2)
+		set(SDL_MAIN SDL2::SDL2main)
+		message(STATUS ${SDL_MAIN} ${IMGUI_SDL_LIBRARY})
+	endif()
+else(SDL2_FOUND)
+	if(DEFINED SDL_PATH)
+		message(FATAL_ERROR "Cannot find SDL at SDL_PATH")
+	else(DEFINED SDL_PATH)
+		message(FATAL_ERROR "Cannot find SDL. Maybe try specifying SDL_PATH?")
+	endif(DEFINED SDL_PATH)
+endif(SDL2_FOUND)
+
+add_library(cimgui_sdl SHARED ${IMGUI_SOURCES})
+target_link_libraries(cimgui_sdl ${IMGUI_LIBRARIES} ${IMGUI_SDL_LIBRARY})
+
+#using library
+include_directories(../../generator/output/)
+add_executable(test_sdl main.c)
+if (MINGW)
+target_link_options(test_sdl PRIVATE "-mconsole")
+endif()
+target_link_libraries(test_sdl ${IMGUI_SDL_LIBRARY} cimgui_sdl)
+