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Optimize CSSetShader on D3D11 when remains unchanged

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This commit is contained in:
Wojtek Figat
2025-08-08 11:03:03 +02:00
parent 9fabc1028a
commit 0369d9b2cb
2 changed files with 14 additions and 2 deletions
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15
Source/Engine/GraphicsDevice/DirectX/DX11/GPUContextDX11.cpp
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@@ -95,6 +95,7 @@ void GPUContextDX11::FrameBegin()
_srMaskDirtyCompute = 0;
_rtCount = 0;
_vertexLayout = nullptr;
_currentCompute = nullptr;
_currentState = nullptr;
_rtDepth = nullptr;
Platform::MemoryClear(_rtHandles, sizeof(_rtHandles));
@@ -497,7 +498,12 @@ void GPUContextDX11::Dispatch(GPUShaderProgramCS* shader, uint32 threadGroupCoun
flushOM();
// Dispatch
_context->CSSetShader((ID3D11ComputeShader*)shader->GetBufferHandle(), nullptr, 0);
auto compute = (ID3D11ComputeShader*)shader->GetBufferHandle();
if (_currentCompute != compute)
{
_currentCompute = compute;
_context->CSSetShader(compute, nullptr, 0);
}
_context->Dispatch(threadGroupCountX, threadGroupCountY, threadGroupCountZ);
RENDER_STAT_DISPATCH_CALL();
@@ -518,7 +524,12 @@ void GPUContextDX11::DispatchIndirect(GPUShaderProgramCS* shader, GPUBuffer* buf
flushOM();
// Dispatch
_context->CSSetShader((ID3D11ComputeShader*)shader->GetBufferHandle(), nullptr, 0);
auto compute = (ID3D11ComputeShader*)shader->GetBufferHandle();
if (_currentCompute != compute)
{
_currentCompute = compute;
_context->CSSetShader(compute, nullptr, 0);
}
_context->DispatchIndirect(bufferForArgsDX11->GetBuffer(), offsetForArgs);
RENDER_STAT_DISPATCH_CALL();

1
Source/Engine/GraphicsDevice/DirectX/DX11/GPUContextDX11.h
View File

@@ -59,6 +59,7 @@ private:
bool _iaInputLayoutDirtyFlag;
// Pipeline State
ID3D11ComputeShader* _currentCompute;
GPUPipelineStateDX11* _currentState;
ID3D11BlendState* CurrentBlendState;
ID3D11RasterizerState* CurrentRasterizerState;