38 lines
1.5 KiB
C++
38 lines
1.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "GlobalShader.h"
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#include "ShaderParameterStruct.h"
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/** Compute shader for unpacking grass map textures rendered by FLandscapeGrassWeightExporter.
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* Note: This class is subject to change without deprecation.
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*/
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class FPCGGrassMapUnpackerCS : public FGlobalShader
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{
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public:
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static constexpr uint32 ThreadGroupDim = 8;
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static constexpr uint32 MaxNumLandscapeComponents = 64;
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public:
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DECLARE_EXPORTED_GLOBAL_SHADER(FPCGGrassMapUnpackerCS, PCGCOMPUTE_API);
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SHADER_USE_PARAMETER_STRUCT(FPCGGrassMapUnpackerCS, FGlobalShader);
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BEGIN_SHADER_PARAMETER_STRUCT(FParameters, PCGCOMPUTE_API)
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SHADER_PARAMETER_RDG_TEXTURE_SRV(Texture2D<float4>, InPackedGrassMaps)
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SHADER_PARAMETER_RDG_TEXTURE_UAV(RWTexture2D<float>, OutUnpackedHeight)
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SHADER_PARAMETER_RDG_TEXTURE_UAV(RWTexture2DArray<float>, OutUnpackedGrassMaps)
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SHADER_PARAMETER_ARRAY(FIntVector4, InLinearTileIndexToComponentIndex, [MaxNumLandscapeComponents])
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SHADER_PARAMETER(FUintVector2, InNumTiles)
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SHADER_PARAMETER(uint32, InLandscapeComponentResolution)
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SHADER_PARAMETER(uint32, InNumGrassMapPasses)
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SHADER_PARAMETER(FVector3f, InLandscapeGridScale)
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SHADER_PARAMETER(float, InLandscapeLocationZ)
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SHADER_PARAMETER(FUintVector2, InOutputResolution)
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SHADER_PARAMETER(uint32, InOutputHeight)
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END_SHADER_PARAMETER_STRUCT()
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public:
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static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
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};
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