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imgui/examples/example_sdl_sdlrenderer
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Clownacy c6cab1f352 Backends: SDL: Added SDL_Renderer* parameter to ImGui_ImplSDL2_InitForSDLRenderer(). Use SDL_GetRendererOutputSize() instead of SDL_GL_GetDrawableSize() when bound to a SDL_Renderer. (#4927) 
This is (kind of) an OpenGL-only function, which should be avoided when SDL2 isn't using OpenGL.
The only alternative that is recommended is SDL_GetRendererOutputSize, which limits this fix to the SDL_Renderer backend. Still, I think it's better than nothing.
I say that SDL_GL_GetDrawableSize is "kind of" OpenGL-only because it does technically work even when SDL2 isn't using OpenGL.
It's just that it becomes a shim to SDL_GetWindowSize, which is not suitable for high-DPI usage because it reflects the size of the window in screen coordinates, not actual pixels, so it really should be avoided when not using OpenGL.
2022-02-04 16:51:29 +01:00
..
build_win32.bat Backends: SDL_Renderer: Added renderer backend for SDL 2.0.17+ (#3926) 2021-09-21 19:29:48 +02:00
example_sdl_sdlrenderer.vcxproj Backends: SDL_Renderer: Amend 1d2d246, various tweaks, fixes, sync to latest. (#3926) 2021-09-21 19:29:48 +02:00
example_sdl_sdlrenderer.vcxproj.filters Backends: SDL_Renderer: Added renderer backend for SDL 2.0.17+ (#3926) 2021-09-21 19:29:48 +02:00
main.cpp Backends: SDL: Added SDL_Renderer* parameter to ImGui_ImplSDL2_InitForSDLRenderer(). Use SDL_GetRendererOutputSize() instead of SDL_GL_GetDrawableSize() when bound to a SDL_Renderer. (#4927) 2022-02-04 16:51:29 +01:00
Makefile Backends: SDL_Renderer: Added renderer backend for SDL 2.0.17+ (#3926) 2021-09-21 19:29:48 +02:00
README.md Backends: SDL_Renderer: Amend 1d2d246, various tweaks, fixes, sync to latest. (#3926) 2021-09-21 19:29:48 +02:00

README.md

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 ..\..\backends\imgui_impl_sdl.cpp ..\..\backends\imgui_impl_sdlrenderer.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_sdlrenderer.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.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 ..\..\backends\imgui_impl_sdl.cpp ..\..\backends\imgui_impl_sdlrenderer.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_sdlrenderer.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib /subsystem:console
  • On Linux and similar Unixes
c++ `sdl2-config --cflags` -I .. -I ../.. main.cpp ../../backends/imgui_impl_sdl.cpp ../../backends/imgui_impl_sdlrenderer.cpp ../../imgui*.cpp `sdl2-config --libs` -lGL
  • On Mac OS X
brew install sdl2
c++ `sdl2-config --cflags` -I .. -I ../.. main.cpp ../../backends/imgui_impl_sdl.cpp ../../backends/imgui_impl_sdlrenderer.cpp ../../imgui*.cpp `sdl2-config --libs` -framework OpenGl