VolumeTexture.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Engine/Texture2D.h"
#include "VolumeTexture.generated.h"
 
extern bool GSupportsVolumeTextureStreaming;
 
class FTextureResource;
 
UCLASS(hidecategories=(Object, Compositing, ImportSettings), MinimalAPI)
class UVolumeTexture : public UTexture
{
    GENERATED_UCLASS_BODY()
 
    
    FTexturePlatformData* PrivatePlatformData;
 
public:
 
    ENGINE_API void SetPlatformData(FTexturePlatformData* PlatformData);
    ENGINE_API FTexturePlatformData* GetPlatformData();
    ENGINE_API const FTexturePlatformData* GetPlatformData() const;
 
#if WITH_EDITOR
    TMap<FString, FTexturePlatformData*> CookedPlatformData;
#endif
 
#if WITH_EDITORONLY_DATA
    UPROPERTY(EditAnywhere, Category=Source2D, meta=(DisplayName="Source Texture"))
    TObjectPtr<UTexture2D> Source2DTexture; 
 
    UPROPERTY()
    FGuid SourceLightingGuid_DEPRECATED;
 
    UPROPERTY(EditAnywhere, Category=Source2D, meta=(DisplayName="Tile Size X"))
    int32 Source2DTileSizeX;
    UPROPERTY(EditAnywhere, Category=Source2D, meta=(DisplayName="Tile Size Y"))
    int32 Source2DTileSizeY;
#endif
 
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Texture, meta = (DisplayName = "Tiling Method"), AssetRegistrySearchable, AdvancedDisplay)
    TEnumAsByte<enum TextureAddress> AddressMode = TA_Wrap;
 
    ENGINE_API bool UpdateSourceFromSourceTexture();
    
    ENGINE_API bool UpdateSourceFromFunction(TFunction<void(int32 /*PosX*/, int32 /*PosY*/, int32 /*PosZ*/, void* /*OutValue*/)> Func, int32 SizeX, int32 SizeY, int32 SizeZ, ETextureSourceFormat Format);
 
    //~ Begin UObject Interface.
    virtual void Serialize(FArchive& Ar) override;
    virtual void PostLoad() override;
    virtual void GetAssetRegistryTags(FAssetRegistryTagsContext Context) const override;
    UE_DEPRECATED(5.4, "Implement the version that takes FAssetRegistryTagsContext instead.")
    virtual void GetAssetRegistryTags(TArray<FAssetRegistryTag>& OutTags) const override;
    virtual FString GetDesc() override;
    virtual void GetResourceSizeEx(FResourceSizeEx& CumulativeResourceSize) override;
    //~ End UObject Interface.
 
    ENGINE_API int32 GetSizeX() const;
    ENGINE_API int32 GetSizeY() const;
    ENGINE_API int32 GetSizeZ() const;
    ENGINE_API int32 GetNumMips() const;
    ENGINE_API EPixelFormat GetPixelFormat() const;
 
    //~ Begin UTexture Interface
    virtual ETextureClass GetTextureClass() const override { return ETextureClass::Volume; }
    virtual float GetSurfaceWidth() const override { return static_cast<float>(GetSizeX()); }
    virtual float GetSurfaceHeight() const override { return static_cast<float>(GetSizeY()); }
    virtual float GetSurfaceDepth() const override { return static_cast<float>(GetSizeZ()); }
    virtual uint32 GetSurfaceArraySize() const override { return 0; }
    virtual TextureAddress GetTextureAddressX() const override { return AddressMode; }
    virtual TextureAddress GetTextureAddressY() const override { return AddressMode; }
    virtual TextureAddress GetTextureAddressZ() const override { return AddressMode; }
    virtual FTextureResource* CreateResource() override;
#if WITH_EDITOR
    ENGINE_API void SetDefaultSource2DTileSize();
    ENGINE_API virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif // WITH_EDITOR
    virtual void UpdateResourceWithParams(EUpdateResourceFlags InFlags) override;
    virtual EMaterialValueType GetMaterialType() const override { return MCT_VolumeTexture; }
    virtual FTexturePlatformData** GetRunningPlatformData() override;
#if WITH_EDITOR
    virtual bool IsDefaultTexture() const override;
    virtual TMap<FString, FTexturePlatformData*>* GetCookedPlatformData() override { return &CookedPlatformData; }
#endif // WITH_EDITOR
    //~ End UTexture Interface
 
    ENGINE_API static class UVolumeTexture* CreateTransient(int32 InSizeX, int32 InSizeY, int32 InSizeZ, EPixelFormat InFormat = PF_B8G8R8A8, const FName InName = NAME_None);
 
    uint32 CalcTextureMemorySize(int32 MipCount) const;
 
    virtual uint32 CalcTextureMemorySizeEnum( ETextureMipCount Enum ) const override;
 
#if WITH_EDITOR
    virtual uint32 GetMaximumDimension() const override;
 
#endif
 
    //~ Begin UStreamableRenderAsset Interface
    virtual int32 CalcCumulativeLODSize(int32 NumLODs) const final override { return CalcTextureMemorySize(NumLODs); }
    virtual bool StreamOut(int32 NewMipCount) final override;
    virtual bool StreamIn(int32 NewMipCount, bool bHighPrio) final override;
    //~ End UStreamableRenderAsset Interface
 
protected:
 
#if WITH_EDITOR
    void UpdateMipGenSettings();
#endif
};