51 lines
2.0 KiB
C++
51 lines
2.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "NNEHlslShadersBase.h"
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#include "RenderGraphUtils.h"
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#include "ShaderParameterUtils.h"
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namespace UE::NNE { class FTensorShape; }
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namespace UE::NNEHlslShaders::Internal
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{
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class FGatherConstants
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{
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public:
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static const int32 MAX_NUM_DIMENSIONS{ 8 };
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static const int32 NUM_GROUP_THREADS{ 256 };
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};
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// template <typename DataElementType, typename IndicesElementType>
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class NNEHLSLSHADERS_API TGatherCS : public FHlslShaderBase
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{
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DECLARE_GLOBAL_SHADER(TGatherCS);
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SHADER_USE_PARAMETER_STRUCT(TGatherCS, FHlslShaderBase)
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class FGatherNumOutputDimensions : SHADER_PERMUTATION_RANGE_INT("NUM_OUTPUT_DIMENSIONS", 1, FGatherConstants::MAX_NUM_DIMENSIONS);
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class FGather64BitIndices : SHADER_PERMUTATION_BOOL("HAS_64BIT_INDICES");
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using FPermutationDomain = TShaderPermutationDomain<FGatherNumOutputDimensions,FGather64BitIndices>;
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public:
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BEGIN_SHADER_PARAMETER_STRUCT(FParameters, )
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SHADER_PARAMETER(int32, Axis)
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SHADER_PARAMETER(int32, OutputSize)
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SHADER_PARAMETER(int32, NumDataDimensions)
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SHADER_PARAMETER(int32, NumIndicesDimensions)
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SHADER_PARAMETER_ARRAY(FIntVector4, DataStride_IndicesStride_OutputStride_DataSizes, [FGatherConstants::MAX_NUM_DIMENSIONS])
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SHADER_PARAMETER_ARRAY(FVector4f, OneDivDataStride_OneDivIndicesStride_OneDivOutputStride, [FGatherConstants::MAX_NUM_DIMENSIONS])
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SHADER_PARAMETER_RDG_BUFFER_SRV(Buffer<float>, Data)
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SHADER_PARAMETER_RDG_BUFFER_SRV(Buffer<int32>, Indices)
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SHADER_PARAMETER_RDG_BUFFER_UAV(RWBuffer<float>, Output)
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END_SHADER_PARAMETER_STRUCT()
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static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& InParameters, FShaderCompilerEnvironment& OutEnvironment);
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static void FillInParameters(int32 Axis, const NNE::FTensorShape& Data, const NNE::FTensorShape& Indices, FParameters& Parameters);
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static FIntVector GetGroupCount(const FParameters& Parameters);
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};
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} // UE::NNEHlslShaders::Internal
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