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Force V-Sync enabled for DXVA2 windowed with DWM composition enabled

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This commit is contained in:
Cameron Gutman 2018-09-03 23:34:15 -07:00
parent 203b2fcaca
commit 9aa487418f
2 changed files with 7 additions and 1 deletions
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7
app/streaming/video/ffmpeg-renderers/dxva2.cpp
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@ -17,6 +17,7 @@ DEFINE_GUID(DXVADDI_Intel_ModeH264_E, 0x604F8E68,0x4951,0x4C54,0x88,0xFE,0xAB,0x
#define SAFE_COM_RELEASE(x) if (x) { (x)->Release(); }
DXVA2Renderer::DXVA2Renderer() :
m_ForceVsyncOn(false),
m_DecService(nullptr),
m_Decoder(nullptr),
m_SurfacesUsed(0),
@ -494,6 +495,10 @@ bool DXVA2Renderer::initializeDevice(SDL_Window* window, bool enableVsync)
d3dpp.SwapEffect = D3DSWAPEFFECT_FLIPEX;
d3dpp.BackBufferCount = 2;
// We need our V-sync source enabled to synchronize with DWM composition
// and avoid micro-stuttering.
m_ForceVsyncOn = true;
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Windowed mode with DWM running");
}
@ -626,7 +631,7 @@ int DXVA2Renderer::getDecoderCapabilities()
IFFmpegRenderer::VSyncConstraint DXVA2Renderer::getVsyncConstraint()
{
return VSYNC_ANY;
return m_ForceVsyncOn ? VSYNC_FORCE_ON : VSYNC_ANY;
}
void DXVA2Renderer::renderFrameAtVsync(AVFrame *frame)

1
app/streaming/video/ffmpeg-renderers/dxva2.h
View file

@ -45,6 +45,7 @@ private:
int m_VideoFormat;
int m_VideoWidth;
int m_VideoHeight;
bool m_ForceVsyncOn;
int m_DisplayWidth;
int m_DisplayHeight;