StaticTextureInstanceManager.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
StaticTextureInstanceManager.h: Definitions of classes used for texture streaming.
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "Streaming/TextureInstanceManager.h"
#include "Streaming/TextureInstanceTask.h"
 
class FStaticRenderAssetInstanceManager : public IRenderAssetInstanceManager
{
public:
 
    FStaticRenderAssetInstanceManager(RenderAssetInstanceTask::FDoWorkTask& AsyncTask);
    ~FStaticRenderAssetInstanceManager() { StateSync.Sync(); }
 
    void NormalizeLightmapTexelFactor();
 
    FORCEINLINE int32 CompileElements() { return StateSync.SyncAndGetState()->CompileElements(); }
    FORCEINLINE int32 CheckRegistrationAndUnpackBounds(TArray<const UPrimitiveComponent*>& RemovedComponents) { return StateSync.SyncAndGetState()->CheckRegistrationAndUnpackBounds(RemovedComponents); }
    FORCEINLINE FRenderAssetInstanceState::FRenderAssetIterator GetRenderAssetIterator( ) {  return StateSync.SyncAndGetState()->GetRenderAssetIterator(); }
 
    FORCEINLINE bool HasRenderAssetReferences() const { return StateSync.GetState()->NumBounds() > 0; }
 
    /*-----------------------------------
    ------ IRenderAssetInstanceManager ------
    -----------------------------------*/
 
    FORCEINLINE bool IsReferenced(const UPrimitiveComponent* Component) const final override { return StateSync.GetState()->HasComponentReferences(Component); }
 
    FORCEINLINE void GetReferencedComponents(TArray<const UPrimitiveComponent*>& Components) const { StateSync.GetState()->GetReferencedComponents(Components); }
 
    bool CanManage(const UPrimitiveComponent* Component) const final override;
 
    void Refresh(float Percentage) final override;
 
    EAddComponentResult Add(const UPrimitiveComponent* Component, FStreamingTextureLevelContext& LevelContext, float MaxAllowedUIDensity) final override;
 
    EAddComponentResult Add(const TArray<FRenderAssetInstanceState::FPreAddComponentPayload>& Payloads, TFunctionRef<void(const FRenderAssetInstanceState::FPreAddComponentPayload&, EAddComponentResult)> OnAddFailedFunc);
 
     void Remove(const UPrimitiveComponent* Component, FRemovedRenderAssetArray* RemovedRenderAssets) final override;
 
    FORCEINLINE void PrepareAsyncView() final override {}
 
    const FRenderAssetInstanceView* GetAsyncView(bool bCreateIfNull) final override;
 
    bool CanAddComponent() const;
 
    uint32 GetAllocatedSize() const final override;
 
    void OffsetBounds(const FVector& Offset);
 
protected:
 
    void OnRefreshVisibilityDone(int32 InBeginIndex, int32 InEndIndex);
 
private:
 
    typedef RenderAssetInstanceTask::FRefreshVisibilityTask FRefreshVisibilityTask;
    typedef RenderAssetInstanceTask::FNormalizeLightmapTexelFactorTask FNormalizeLightmapTexelFactorTask;
 
    struct FTasks
    {
        ~FTasks() { SyncResults(); }
        void SyncResults();
        TRefCountPtr<FRefreshVisibilityTask> RefreshVisibilityTask;
        TRefCountPtr<FNormalizeLightmapTexelFactorTask> NormalizeLightmapTexelFactorTask;
    };
 
    FRenderAssetInstanceStateTaskSync<FTasks> StateSync;
 
    TRefCountPtr<const FRenderAssetInstanceView> AsyncView;
 
    int32 DirtyIndex;
};