MegaLightsViewState.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Math/Vector4.h"
#include "RendererInterface.h"
#include "RenderGraphResources.h"
 
enum class EMegaLightsInput : uint8;
 
class FMegaLightsViewState
{
public:
    struct FResources
    {
        TRefCountPtr<IPooledRenderTarget> DiffuseLightingHistory;
        TRefCountPtr<IPooledRenderTarget> SpecularLightingHistory;
        TRefCountPtr<IPooledRenderTarget> LightingMomentsHistory;
        TRefCountPtr<IPooledRenderTarget> NumFramesAccumulatedHistory;
        TRefCountPtr<FRDGPooledBuffer> VisibleLightHashHistory;
        TRefCountPtr<FRDGPooledBuffer> VisibleLightMaskHashHistory;
        TRefCountPtr<FRDGPooledBuffer> VolumeVisibleLightHashHistory;
        TRefCountPtr<FRDGPooledBuffer> TranslucencyVolume0VisibleLightHashHistory;
        TRefCountPtr<FRDGPooledBuffer> TranslucencyVolume1VisibleLightHashHistory;
 
        // Optionally used, default is StochasticLightingViewState.SceneXxxHistory
        TRefCountPtr<IPooledRenderTarget> SceneDepthHistory;
        TRefCountPtr<IPooledRenderTarget> SceneNormalHistory;
 
        FVector4f HistoryScreenPositionScaleBias = FVector4f(1.0f, 1.0f, 0.0f, 0.0f);
        FVector4f HistoryUVMinMax = FVector4f(0.0f, 0.0f, 0.0f, 0.0f);
        FVector4f HistoryGatherUVMinMax = FVector4f(0.0f, 0.0f, 0.0f, 0.0f);
        FVector4f HistoryBufferSizeAndInvSize = FVector4f(0.0f, 0.0f, 0.0f, 0.0f);
        FIntPoint HistoryVisibleLightHashViewMinInTiles = 0;
        FIntPoint HistoryVisibleLightHashViewSizeInTiles = 0;
 
        FIntVector HistoryVolumeVisibleLightHashViewSizeInTiles = FIntVector::ZeroValue;
        FIntVector HistoryTranslucencyVolumeVisibleLightHashSizeInTiles = FIntVector::ZeroValue;
 
        void SafeRelease()
        {
            DiffuseLightingHistory.SafeRelease();
            SpecularLightingHistory.SafeRelease();
            LightingMomentsHistory.SafeRelease();
            NumFramesAccumulatedHistory.SafeRelease();
            VisibleLightHashHistory.SafeRelease();
            VisibleLightMaskHashHistory.SafeRelease();
            VolumeVisibleLightHashHistory.SafeRelease();
            TranslucencyVolume0VisibleLightHashHistory.SafeRelease();
            TranslucencyVolume1VisibleLightHashHistory.SafeRelease();
        }
 
        uint64 GetGPUSizeBytes(bool bLogSizes) const;
    };
 
    void SafeRelease()
    {
        GBuffer.SafeRelease();
        HairStrands.SafeRelease();
    }
 
    uint64 GetGPUSizeBytes(bool bLogSizes) const
    {
        uint64 Out = 0;
        Out += GBuffer.GetGPUSizeBytes(bLogSizes);
        Out += HairStrands.GetGPUSizeBytes(bLogSizes);
        return Out;
    }
 
    FResources GBuffer;
    FResources HairStrands;
};