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Use D3D11_COPY_DISCARD when updating our video texture

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This ensures the driver knows it doesn't have to synchronize with the previous texture data.
This commit is contained in:
Cameron Gutman
2025-11-24 18:49:19 -06:00
parent 4164a222ae
commit f0821d9543
2 changed files with 16 additions and 3 deletions
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17
app/streaming/video/ffmpeg-renderers/d3d11va.cpp
View File

@@ -129,6 +129,7 @@ bool D3D11VARenderer::createDeviceByAdapterIndex(int adapterIndex, bool* adapter
DXGI_ADAPTER_DESC1 adapterDesc;
D3D_FEATURE_LEVEL featureLevel;
HRESULT hr;
ComPtr<ID3D11DeviceContext> deviceContext;
SDL_assert(!m_Device);
SDL_assert(!m_DeviceContext);
@@ -178,7 +179,7 @@ bool D3D11VARenderer::createDeviceByAdapterIndex(int adapterIndex, bool* adapter
D3D11_SDK_VERSION,
&m_Device,
&featureLevel,
&m_DeviceContext);
&deviceContext);
if (FAILED(hr)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"D3D11CreateDevice() failed: %x",
@@ -198,6 +199,16 @@ bool D3D11VARenderer::createDeviceByAdapterIndex(int adapterIndex, bool* adapter
m_DevicesWithFL11Support++;
}
hr = deviceContext.As(&m_DeviceContext);
if (FAILED(hr)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"ID3D11DeviceContext::QueryInterface(ID3D11DeviceContext1) failed: %x",
hr);
m_DeviceContext.Reset();
m_Device.Reset();
goto Exit;
}
bool ok;
m_BindDecoderOutputTextures = !!qEnvironmentVariableIntValue("D3D11VA_FORCE_BIND", &ok);
if (!ok) {
@@ -805,7 +816,9 @@ void D3D11VARenderer::renderVideo(AVFrame* frame)
}
else {
// Copy this frame into our video texture
m_DeviceContext->CopySubresourceRegion(m_VideoTexture.Get(), 0, 0, 0, 0, (ID3D11Resource*)frame->data[0], (int)(intptr_t)frame->data[1], nullptr);
m_DeviceContext->CopySubresourceRegion1(m_VideoTexture.Get(), 0, 0, 0, 0,
(ID3D11Resource*)frame->data[0], (int)(intptr_t)frame->data[1],
nullptr, D3D11_COPY_DISCARD);
// SRV 0 is always mapped to the video texture
srvIndex = 0;

2
app/streaming/video/ffmpeg-renderers/d3d11va.h
View File

@@ -60,7 +60,7 @@ private:
Microsoft::WRL::ComPtr<IDXGIFactory5> m_Factory;
Microsoft::WRL::ComPtr<ID3D11Device> m_Device;
Microsoft::WRL::ComPtr<IDXGISwapChain4> m_SwapChain;
Microsoft::WRL::ComPtr<ID3D11DeviceContext> m_DeviceContext;
Microsoft::WRL::ComPtr<ID3D11DeviceContext1> m_DeviceContext;
Microsoft::WRL::ComPtr<ID3D11RenderTargetView> m_RenderTargetView;
SupportedFenceType m_FenceType;
SDL_mutex* m_ContextLock;