TexturePageLocks.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Containers/HashTable.h"
#include "VirtualTexturing.h"
 
class FTexturePageLocks
{
public:
    FTexturePageLocks();
 
    bool Lock(const FVirtualTextureLocalTile& Tile);
    bool Unlock(const FVirtualTextureLocalTile& Tile);
 
    void ForceUnlockAll(const FVirtualTextureProducerHandle& ProducerHandle, TArray<FVirtualTextureLocalTile>& OutUnlockedTiles);
 
    bool IsLocked(const FVirtualTextureLocalTile& Tile) const;
 
private:
    uint32 AcquireIndex();
 
    FHashTable TileHash;
    FHashTable ProducerToTileIndex;
    TArray<FVirtualTextureLocalTile> LockedTiles;
    TArray<uint16> LockCounts;
    TArray<uint32> FreeIndices;
};