VirtualTextureBuilder.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Engine/Texture.h"
#include "VirtualTextureBuilder.generated.h"
 
enum class EShadingPath;
 
#if WITH_EDITOR
 
struct FVirtualTextureBuildDesc
{
    uint64 BuildHash = 0;
 
    int32 LayerCount = 0;
    TArray<ETextureSourceFormat, TInlineAllocator<4>> LayerFormats;
    TArray<FTextureFormatSettings, TInlineAllocator<4>> LayerFormatSettings;
 
    int32 TileSize = 0;
    int32 TileBorderSize = 0;
 
    TEnumAsByte<enum TextureGroup> LODGroup = TEXTUREGROUP_World;
    ETextureLossyCompressionAmount LossyCompressionAmount = TLCA_Default;
 
    UE_DEPRECATED(5.6, "bContinuousUpdate is not used.")
    bool bContinuousUpdate = false;
    bool bSinglePhysicalSpace = false;
 
    int32 NumMips = 0;
 
    uint32 InSizeX = 0;
    uint32 InSizeY = 0;
    uint8 const* InData = nullptr;
};
 
#endif
 
UCLASS(ClassGroup = Rendering, BlueprintType, MinimalAPI, meta = (DisplayName = "Streaming Runtime Virtual Texture"))
class UVirtualTextureBuilder : public UObject
{
public:
    GENERATED_UCLASS_BODY()
    ENGINE_API ~UVirtualTextureBuilder();
 
    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = Texture)
    TObjectPtr<class UVirtualTexture2D> Texture;
 
    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = Texture, meta = (EditCondition=bSeparateTextureForMobile))
    TObjectPtr<class UVirtualTexture2D> TextureMobile;
 
    UPROPERTY()
    uint64 BuildHash;
 
    ENGINE_API UVirtualTexture2D* GetVirtualTexture(EShadingPath ShadingPath) const;
 
    UPROPERTY(EditAnywhere, Category = Texture)
    bool bSeparateTextureForMobile = false;
 
#if WITH_EDITOR
    ENGINE_API void BuildTexture(EShadingPath ShadingPath, FVirtualTextureBuildDesc const& BuildDesc, bool bWaitForCompilation = false);
#endif
 
protected:
    //~ Begin UObject Interface
    virtual void Serialize(FArchive& Ar) override;
    virtual void PostLoad() override;
#if WITH_EDITOR
    virtual bool CanEditChange(const FProperty* InProperty) const override;
#endif // WITH_EDITOR
    //~ End UObject Interface
};