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Demote DXVA2 renderer to second pass of hwaccels

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This commit is contained in:
Cameron Gutman 2024-03-26 23:04:54 -05:00
parent 9be782ae8e
commit cefa567f95
3 changed files with 6 additions and 45 deletions
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35
app/streaming/video/ffmpeg-renderers/dxva2.cpp
View file

@ -447,13 +447,6 @@ bool DXVA2Renderer::initializeQuirksForAdapter(IDirect3D9Ex* d3d9ex, int adapter
// 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;
@ -568,34 +561,6 @@ bool DXVA2Renderer::initializeDevice(SDL_Window* window, bool enableVsync)
return false;
}
// If we have a WDDM 2.0 or later display driver, 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).
//
// We want D3D11VA in FSE multi-GPU cases due to a plethora of issues with
// D3D9Ex PresentEx()/D3DPRESENT_DONOTWAIT on hybrid graphics systems (See
// issues #235, #240, #386, and #951 on GitHub). Clearly this codepath is not
// well tested by Microsoft or GPU vendors, so stick to the more common
// D3D11-based renderer which is much more likely to behave.
//
// DXVA2 video processing is also quite buggy on AMD, Intel, and Qualcomm
// hardware with various issues documented in initializeQuirksForAdapter().
// We can avoid all this by using our own shaders in the D3D11VA renderer.
//
// 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_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Defaulting to D3D11VA for WDDM 2.0 GPU driver");
d3d9ex->Release();
return false;
}
D3DCAPS9 deviceCaps;
d3d9ex->GetDeviceCaps(adapterIndex, D3DDEVTYPE_HAL, &deviceCaps);

2
app/streaming/video/ffmpeg-renderers/dxva2.h
View file

@ -80,7 +80,7 @@ private:
#define DXVA2_QUIRK_NO_VP 0x01
#define DXVA2_QUIRK_SET_DEST_FORMAT 0x02
#define DXVA2_QUIRK_WDDM_20_PLUS 0x04
#define DXVA2_QUIRK_WDDM_20_PLUS 0x04 // Unused
#define DXVA2_QUIRK_MULTI_GPU 0x08
int m_DeviceQuirks;
};

14
app/streaming/video/ffmpeg.cpp
View file

@ -814,12 +814,8 @@ IFFmpegRenderer* FFmpegVideoDecoder::createHwAccelRenderer(const AVCodecHWConfig
if (pass == 0) {
switch (hwDecodeCfg->device_type) {
#ifdef Q_OS_WIN32
// DXVA2 appears in the hwaccel list before D3D11VA, so we will prefer it.
//
// There is logic in DXVA2 that may elect to fail on the first selection pass
// to allow D3D11VA to be used in cases where it is known to be better.
case AV_HWDEVICE_TYPE_DXVA2:
return new DXVA2Renderer(pass);
// DXVA2 appears in the hwaccel list before D3D11VA, so we only check for D3D11VA
// on the first pass to ensure we prefer D3D11VA over DXVA2.
case AV_HWDEVICE_TYPE_D3D11VA:
return new D3D11VARenderer(pass);
#endif
@ -857,9 +853,9 @@ IFFmpegRenderer* FFmpegVideoDecoder::createHwAccelRenderer(const AVCodecHWConfig
return new CUDARenderer();
#endif
#ifdef Q_OS_WIN32
// This gives DXVA2 and D3D11VA another shot at handling cases where they
// chose to purposefully fail in the first selection pass to allow a more
// optimal decoder to be tried.
// This gives us another shot if D3D11VA failed in the first pass.
// Since DXVA2 is in the hwaccel list first, we'll first try to fall back
// to that before giving D3D11VA another try as a last resort.
case AV_HWDEVICE_TYPE_DXVA2:
return new DXVA2Renderer(pass);
case AV_HWDEVICE_TYPE_D3D11VA: