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Don't use glFinish() with KMSDRM backend

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This commit is contained in:
Cameron Gutman 2021-03-07 11:23:31 -06:00
parent 41337475a2
commit d722bf10b9
1 changed files with 11 additions and 1 deletions
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12
app/streaming/video/ffmpeg-renderers/eglvid.cpp
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@ -557,7 +557,17 @@ bool EGLRenderer::initialize(PDECODER_PARAMETERS params)
if (params->enableVsync) {
SDL_GL_SetSwapInterval(1);
m_BlockingSwapBuffers = true;
#if SDL_VERSION_ATLEAST(2, 0, 15) && defined(SDL_VIDEO_DRIVER_KMSDRM)
// The SDL KMSDRM backend already enforces double buffering (due to
// SDL_HINT_VIDEO_DOUBLE_BUFFER=1), so calling glFinish() after
// SDL_GL_SwapWindow() will block an extra frame and lock rendering
// at 1/2 the display refresh rate.
if (info.subsystem != SDL_SYSWM_KMSDRM)
#endif
{
m_BlockingSwapBuffers = true;
}
} else {
SDL_GL_SetSwapInterval(0);
}