DynamicTextureInstanceManager.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
DynamicTextureInstanceManager.h: Definitions of classes used for texture streaming.
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "Streaming/TextureInstanceManager.h"
#include "Streaming/TextureInstanceTask.h"
#include "ContentStreaming.h"
 
class FDynamicRenderAssetInstanceManager : public IRenderAssetInstanceManager
{
public:
 
    using FOnSyncDoneDelegate = TFunction<void (const FRemovedRenderAssetArray&)>;
 
    FDynamicRenderAssetInstanceManager(FOnSyncDoneDelegate&& InOnSyncDoneDelegate);
    ~FDynamicRenderAssetInstanceManager();
 
    void RegisterTasks(RenderAssetInstanceTask::FDoWorkTask& AsyncTask);
 
    void IncrementalUpdate(FRemovedRenderAssetArray& RemovedRenderAssets, float Percentage);
 
    // Get all (non removed) components refered by the manager. Debug only.
    void GetReferencedComponents(TArray<const UPrimitiveComponent*>& Components);
 
    void OnPreGarbageCollect(FRemovedRenderAssetArray& RemovedRenderAssets);
 
    /*-----------------------------------
    ------ IRenderAssetInstanceManager ------
    -----------------------------------*/
 
    bool IsReferenced(const UPrimitiveComponent* Component) const final;
 
    bool CanManage(const UPrimitiveComponent* Component) const final override;
 
    EAddComponentResult Add(const UPrimitiveComponent* Component, FStreamingTextureLevelContext& LevelContext, float MaxAllowedUIDensity = 0) final override;
 
     void Remove(const UPrimitiveComponent* Component, FRemovedRenderAssetArray* RemovedRenderAssets) final override;
 
    void PrepareAsyncView() final override;
 
    const FRenderAssetInstanceView* GetAsyncView(bool bCreateIfNull) final override;
 
    uint32 GetAllocatedSize() const final override;
 
    const FRenderAssetInstanceView* GetGameThreadView();
 
protected:
    
    void Refresh(float Percentage) final override;
 
    void OnCreateViewDone(FRenderAssetInstanceView* InView);
    void OnRefreshVisibilityDone(int32 BeginIndex, int32 EndIndex, const TArray<int32>& SkippedIndices, int32 FirstFreeBound, int32 LastUsedBound);
 
private:
 
    typedef RenderAssetInstanceTask::FCreateViewWithUninitializedBoundsTask FCreateViewTask;
    typedef RenderAssetInstanceTask::FRefreshFullTask FRefreshFullTask;
 
    struct FTasks
    {
        ~FTasks()
        {
            SyncResults();
        }
        
        void SyncResults();
        
        void SyncRefreshFullTask();
 
        TRefCountPtr<FCreateViewTask> CreateViewTask;
        TRefCountPtr<FRefreshFullTask> RefreshFullTask;
    };
 
    FRenderAssetDynamicInstanceStateTaskSync<FTasks> StateSync;
 
    TRefCountPtr<const FRenderAssetInstanceView> AsyncView;
 
    int32 DirtyIndex;
 
    int32 PendingDefragSrcBoundIndex;
    int32 PendingDefragDstBoundIndex;
 
    TArray<const UPrimitiveComponent*> PendingComponents;
};