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Update blocking swap buffer opt-out comment

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This commit is contained in:
Cameron Gutman
2025-12-30 15:43:31 -06:00
parent 232ff0b3c6
commit b6d10a34c8
1 changed files with 6 additions and 4 deletions
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app/streaming/video/ffmpeg-renderers/eglvid.cpp
+6 -4
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@@ -602,10 +602,12 @@ bool EGLRenderer::initialize(PDECODER_PARAMETERS params)
SDL_GL_SetSwapInterval(1); SDL_GL_SetSwapInterval(1);
#if SDL_VERSION_ATLEAST(2, 0, 15) && defined(SDL_VIDEO_DRIVER_KMSDRM) #if SDL_VERSION_ATLEAST(2, 0, 15) && defined(SDL_VIDEO_DRIVER_KMSDRM)
// The SDL KMSDRM backend already enforces double buffering (due to // We don't use the fence to reduce latency on KMSDRM
// SDL_HINT_VIDEO_DOUBLE_BUFFER=1), so calling glFinish() after // because it can have severe performance impacts when
// SDL_GL_SwapWindow() will block an extra frame and lock rendering // running on slow GPUs where the frame time exceeds
// at 1/2 the display refresh rate. // the video stream's frame interval. The latency
// reduction is also less critical without a compositor
// adding latency too.
if (info.subsystem != SDL_SYSWM_KMSDRM) if (info.subsystem != SDL_SYSWM_KMSDRM)
#endif #endif
{ {