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ebd6bed396
Accelerate lookup of tiles per producer in ForceUnlockAllTiles
#rb jeanfrancois.dube
#preflight 6179b6d14c74960001ea6bca
#lockdown michal.valient
#ROBOMERGE-AUTHOR: jeremy.moore
#ROBOMERGE-SOURCE: CL 17962450 via CL 18008146 via CL 18370529 via CL 18370609
#ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v895-18170469)
[CL 18370666 by jeremy moore in ue5-release-engine-test branch]
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Containers/HashTable.h"
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#include "VirtualTexturing.h"
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/**
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* This tracks lock counts for individual VT tiles
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* We need to track lock counts for all tiles, since different allocated VTs may try to lock/unlock the same pages,
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* and we need a way to know when a given tile is no longer locked by anything
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*/
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class FTexturePageLocks
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{
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public:
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FTexturePageLocks();
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/** Lock/Unlock return true if the lock state was changed */
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bool Lock(const FVirtualTextureLocalTile& Tile);
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bool Unlock(const FVirtualTextureLocalTile& Tile);
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/** Force-unlock all tiles using the given producer, returns list of all tiles that were unlocked */
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void ForceUnlockAll(const FVirtualTextureProducerHandle& ProducerHandle, TArray<FVirtualTextureLocalTile>& OutUnlockedTiles);
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bool IsLocked(const FVirtualTextureLocalTile& Tile) const;
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private:
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uint32 AcquireIndex();
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FHashTable TileHash;
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FHashTable ProducerToTileIndex;
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TArray<FVirtualTextureLocalTile> LockedTiles;
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TArray<uint16> LockCounts;
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TArray<uint32> FreeIndices;
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};
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