MaterialCacheVirtualFinalizer.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "MaterialCache/MaterialCacheAttribute.h"
#include "Engine/Texture2D.h"
#include "VirtualTexturing.h"
#include "RHIFwd.h"
 
class FScene;
 
struct FMaterialCacheTileEntry
{
    TArray<FVTProduceTargetLayer, TInlineAllocator<MaterialCacheMaxRuntimeLayers>> TargetLayers;
 
    uint64 Address = 0;
 
    uint8 Level = 0;
};
 
class FMaterialCacheVirtualFinalizer : public IVirtualTextureFinalizer
{
public:
    FMaterialCacheVirtualFinalizer(FScene* InScene, FPrimitiveComponentId InPrimitiveComponentId, const FMaterialCacheTagLayout& TagLayout, const FVTProducerDescription& InProducerDesc);
    virtual ~FMaterialCacheVirtualFinalizer() = default;
 
    void AddTile(const FMaterialCacheTileEntry& InEntry);
 
public: 
    virtual void RenderFinalize(FRDGBuilder& GraphBuilder, ISceneRenderer* SceneRenderingContext) override;
    virtual void Finalize(FRDGBuilder& GraphBuilder) override;
 
protected:
    FScene* Scene = nullptr;
    
    FPrimitiveComponentId PrimitiveComponentId;
 
    FMaterialCacheTagLayout TagLayout;
    
    FVTProducerDescription ProducerDesc;
    EPixelFormat SourceFormat;
    EPixelFormat DestFormat;
    EPixelFormat IntermediateFormat;
 
private:
    TArray<FMaterialCacheTileEntry> TilesToRender;
};