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Prefer D3D11VA in non-FSE modes for improved performance

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This commit is contained in:
Cameron Gutman
2022-08-21 17:50:56 -05:00
parent feaae7b684
commit bf4332b9e7
5 changed files with 55 additions and 11 deletions
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32
app/streaming/video/ffmpeg-renderers/dxva2.cpp
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@@ -28,7 +28,8 @@ typedef struct _VERTEX
float tu, tv;
} VERTEX, *PVERTEX;
DXVA2Renderer::DXVA2Renderer() :
DXVA2Renderer::DXVA2Renderer(int decoderSelectionPass) :
m_DecoderSelectionPass(decoderSelectionPass),
m_DecService(nullptr),
m_Decoder(nullptr),
m_SurfacesUsed(0),
@@ -434,6 +435,13 @@ bool DXVA2Renderer::initializeDeviceQuirks()
// For other GPUs, we'll avoid populating it as was our previous behavior.
m_DeviceQuirks |= DXVA2_QUIRK_SET_DEST_FORMAT;
}
// Tag this display device if it has a WDDM 2.0+ driver for the decoder selection logic
if (HIWORD(id.DriverVersion.HighPart) >= 20) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Detected WDDM 2.0 or later display driver");
m_DeviceQuirks |= DXVA2_QUIRK_WDDM_20_PLUS;
}
}
return true;
@@ -707,7 +715,7 @@ bool DXVA2Renderer::initialize(PDECODER_PARAMETERS params)
return false;
}
#else
else if (qgetenv("DXVA2_ENABLED") != "1") {
else if (qgetenv("DXVA2_ENABLED") != "1" && m_DecoderSelectionPass == 0) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"DXVA2 is disabled by default on ARM64. Set DXVA2_ENABLED=1 to override.");
return false;
@@ -759,6 +767,26 @@ bool DXVA2Renderer::initialize(PDECODER_PARAMETERS params)
return false;
}
// If we have a WDDM 2.0 or later display driver and we're not running in
// full-screen exclusive mode, prefer the D3D11VA renderer.
//
// D3D11VA is better in this case because it can enable tearing in non-FSE
// modes when the user has V-Sync disabled. In non-FSE V-Sync cases, D3D11VA
// provides lower display latency on systems that support Independent Flip
// in windowed mode. When using D3D9, DWM will not promote us to IFlip unless
// we're full-screen (exclusive or not).
//
// NB: The reason we only do this for WDDM 2.0 and later is because older
// AMD drivers (such as those for the HD 5570) render garbage when using
// the D3D11VA renderer.
if (m_DecoderSelectionPass == 0 &&
(m_DeviceQuirks & DXVA2_QUIRK_WDDM_20_PLUS) &&
!((SDL_GetWindowFlags(params->window) & SDL_WINDOW_FULLSCREEN_DESKTOP) == SDL_WINDOW_FULLSCREEN)) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Defaulting to D3D11VA for non-FSE mode");
return false;
}
if (!initializeDecoder()) {
return false;
}