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offscreen: Add new video driver backend Offscreen

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The Offscreen video driver is intended to be used for headless rendering
  as well as allows for multiple GPUs to be used for headless rendering

Currently only supports EGL (OpenGL / ES) or Framebuffers
Adds a hint to specifiy which EGL device to use: SDL_HINT_EGL_DEVICE
Adds testoffscreen.c which can be used to test the backend out
Disabled by default for now
This commit is contained in:
Brandon Schaefer
2019-09-24 16:36:48 -04:00
parent 3d55a51482
commit 68985371a0
18 changed files with 1018 additions and 7 deletions
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1
include/SDL_config.h.cmake
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@@ -328,6 +328,7 @@
#cmakedefine SDL_VIDEO_DRIVER_DIRECTFB @SDL_VIDEO_DRIVER_DIRECTFB@
#cmakedefine SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC @SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC@
#cmakedefine SDL_VIDEO_DRIVER_DUMMY @SDL_VIDEO_DRIVER_DUMMY@
#cmakedefine SDL_VIDEO_DRIVER_OFFSCREEN @SDL_VIDEO_DRIVER_OFFSCREEN@
#cmakedefine SDL_VIDEO_DRIVER_WINDOWS @SDL_VIDEO_DRIVER_WINDOWS@
#cmakedefine SDL_VIDEO_DRIVER_WAYLAND @SDL_VIDEO_DRIVER_WAYLAND@
#cmakedefine SDL_VIDEO_DRIVER_RPI @SDL_VIDEO_DRIVER_RPI@