ExternalTexture.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "RHI.h"
#include "MaterialShared.h"
#include "HAL/CriticalSection.h"
 
class FExternalTextureRegistry
{
    static FExternalTextureRegistry* Singleton;
 
    FExternalTextureRegistry() { }
 
    struct FExternalTextureEntry
    {
        FExternalTextureEntry(FTextureRHIRef& InTextureRHI, FSamplerStateRHIRef& InSamplerStateRHI, const FLinearColor& InCoordinateScaleRotation, const FLinearColor& InCoordinateOffset)
            : TextureRHI(InTextureRHI)
            , SamplerStateRHI(InSamplerStateRHI)
            , CoordinateScaleRotation(InCoordinateScaleRotation)
            , CoordinateOffset(InCoordinateOffset)
        {}
 
        const FTextureRHIRef TextureRHI;
        const FSamplerStateRHIRef SamplerStateRHI;
        FLinearColor CoordinateScaleRotation;
        FLinearColor CoordinateOffset;
    };
 
    TMap<FGuid, FExternalTextureEntry> TextureEntries;
 
    TSet<const FMaterialRenderProxy*> ReferencingMaterialRenderProxies;
 
    FCriticalSection CriticalSection;
 
public:
 
    ENGINE_API void RegisterExternalTexture(const FGuid& InGuid, FTextureRHIRef& InTextureRHI, FSamplerStateRHIRef& InSamplerStateRHI, const FLinearColor& InCoordinateScaleRotation = FLinearColor(1, 0, 0, 1), const FLinearColor& InCoordinateOffset = FLinearColor(0, 0, 0, 0));
 
    ENGINE_API void UnregisterExternalTexture(const FGuid& InGuid);
 
    ENGINE_API void RemoveMaterialRenderProxyReference(const FMaterialRenderProxy* MaterialRenderProxy);
 
    ENGINE_API bool GetExternalTexture(const FMaterialRenderProxy* MaterialRenderProxy, const FGuid& InGuid, FTextureRHIRef& OutTextureRHI, FSamplerStateRHIRef& OutSamplerStateRHI);
 
    ENGINE_API bool GetExternalTextureCoordinateScaleRotation(const FGuid& InGuid, FLinearColor& OutCoordinateScaleRotation);
 
    ENGINE_API bool GetExternalTextureCoordinateOffset(const FGuid& InGuid, FLinearColor& OutCoordinateOffset);
 
public:
 
    static ENGINE_API FExternalTextureRegistry& Get();
};