GlintShadingLUTs.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    GlintShadingLUTs.h: look up table to be ablew to render luts.
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "RendererInterface.h"
 
class FViewInfo;
 
struct FGlintShadingLUTsStateData
{
    TRefCountPtr<IPooledRenderTarget> GlintShadingLUTs = nullptr;
    FRHITexture* RHIGlintShadingLUTs = nullptr;
 
    float Dictionary_Alpha = 0.0f;
    int32 Dictionary_NDistributionsPerChannel = 0;
    int32 Dictionary_N = 0;
    int32 Dictionary_NLevels = 0;
    int32 Dictionary_Pyramid0Size = 0;
 
    uint64 GetGPUSizeBytes(bool bLogSizes) const;
 
    static void Init(FRDGBuilder& GraphBuilder, FViewInfo& View);
 
private:
    void SetDictionaryParameter(int32 NumberOfLevels, int32 NumberOfDistributionsPerChannel, float Dictionary_Alpha);
};