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  3. URuntimeVirtualTexture

URuntimeVirtualTexture

Runtime virtual texture [UObject](API\Runtime\CoreUObject\UObject\UObject)

Unreal Engine C++ API Reference > Runtime > Engine > VT

Inheritance Hierarchy

References

   
Module Engine
Header /Engine/Source/Runtime/Engine/Classes/VT/RuntimeVirtualTexture.h
Include #include "VT/RuntimeVirtualTexture.h"

Syntax

class URuntimeVirtualTexture : public UObject

Remarks

Runtime virtual texture UObject

Variables

  Type Name Description
Protected variable bool bAdaptive Enable sparse adaptive page tables.
Protected variable bool bClearTextures Enable clear before rendering a page of the virtual texture.
Protected variable bool bCompressTextures Enable storing the virtual texture in GPU supported compression formats.
Protected variable bool bContinuousUpdate Enable continuous update of the virtual texture pages.
Protected variable bool bPrivateSpace Enable private page table allocation.
Protected variable bool bSinglePhysicalSpace Enable page table channel packing.
Protected variable bool bUseLowQualityCompression Use low quality textures (RGB565/RGB555A1) to replace runtime compression
Protected variable TEnumAsByte< enum TextureGroup > LODGroup Texture group this texture belongs to
Protected variable ERuntimeVirtualTextureMaterialType MaterialType Contents of virtual texture.
Protected variable int32 RemoveLowMips Number of low mips to cut from the virtual texture.
Protected variable int32 TileBorderSize Page tile border size divided by 2 (Actual values increase in multiples of 2).
Protected variable int32 TileCount Size of virtual texture in tiles.
Protected variable int32 TileSize Page tile size. (Actual values increase in powers of 2)

Constructors

  Type Name Description
Public function  

URuntimeVirtualTexture ( const FObjectInitializer& ObjectInitializer
)

  

Destructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function Const bool Public getter for virtual texture using adaptive flag.
Public function Const IAllocatedVirtualTexture * Getter for the associated virtual texture allocation. Call on render thread only.
Public function Static int32

GetClampedTileCount ( int32 InTileCount,
bool InAdaptive
)

  
Public function Static int32

GetClampedTileSize ( int32 InTileSize
)

  
Public function Const bool Returns true if texture pages should be cleared before render
Public function Const bool Get if this virtual texture uses compressed texture formats.
Public function Const bool Public getter for virtual texture using continuous update flag.
Public function Const int32 Returns number of texture layers in the virtual texture
Public function Static int32

GetLayerCount ( ERuntimeVirtualTextureMaterialType InMaterialType
)

 Returns number of texture layers in the virtual texture of a given material type
Public function Const EPixelFormat

GetLayerFormat ( int32 LayerIndex
)

 Returns the texture format for the virtual texture layer
Public function Const TEnumAsByte< enum TextureGroup > Public getter for texture LOD Group
Public function Const bool Public getter for virtual texture using low quality compression flag.
Public function Const ERuntimeVirtualTextureMaterialType Get the material set that this virtual texture stores.
Public function Static int32

GetMaxTileCountLog2 ( bool InAdaptive
)

  
Public function Const int32 Public getter for virtual texture page table size.
Public function Const bool Public getter for virtual texture using private space flag.
Public function Const void

GetProducerDescription ( FVTProducerDescription& OutDesc,
FInitSettings const& InitSettings,
FTransform const& VolumeToWorld
)

 Get virtual texture description based on the properties of this object and the passed in volume transform.
Public function Const FVirtualTextureProducerHandle Getter for the associated virtual texture producer. Call on render thread only.
Public function Const int32 Public getter for virtual texture removed low mips
Public function Const bool Public getter for virtual texture using single physical space flag.
Public function Const int32

GetSize ()

 Public getter for virtual texture size. This is derived from the TileCount and TileSize.
Public function Const int32 Public getter for virtual texture tile border size
Public function Const int32 Public getter for virtual texture tile count
Public function Const int32 Public getter for virtual texture tile size
Public function Const FVector4

GetUniformParameter ( int32 Index
)

 Getter for the shader uniform parameters.
Public function Static UE::Shader::EValueType

GetUniformParameterType ( int32 Index
)

 Getter for the shader uniform parameter type.
Public function void

Initialize ( IVirtualTexture* InProducer,
FVTProducerDescription const& InProducerDesc,
FTransform const& InVolumeToWorld,
FBox const& InWorldBounds
)

 (Re)Initialize this object. Call this whenever we modify the producer or transform.
Protected function void Initialize the render resources with a null producer. This kicks off render thread work.
Protected function void

InitResource ( IVirtualTexture* InProducer,
FVTProducerDescription const& InProducerDesc
)

 Initialize the render resources. This kicks off render thread work.
Public function Const bool

IsLayerSRGB ( int32 LayerIndex
)

 Return true if the virtual texture layer should be sampled as sRGB
Public function Const bool

IsLayerYCoCg ( int32 LayerIndex
)

 Return true if the virtual texture layer should be sampled as YCoCg
Public function void

Release ()

 Release the resources for this object This will need to be called if our producer becomes stale and we aren't doing a full reinit with a new producer.

Overridden from UObject

  Type Name Description
Protected function Virtual Const void Gathers a list of asset registry searchable tags which are name/value pairs with some type information This only needs to be implemented for asset objects
Protected function Virtual void

PostEditChangeProperty ( FPropertyChangedEvent& PropertyChangedEvent
)

 Called when a property on this object has been modified externally
Protected function Virtual void Do any object-specific cleanup required immediately after loading an object.

Classes

  Type Name Description
Public struct FInitSettings Structure containing additional settings for initializing the producer.  

Deprecated Variables

  Type Name Description
Protected variable int32 Size_DEPRECATED Deprecated size of virtual texture.
Protected variable TObjectPtr< class URuntimeVirtualTextureStreamingProxy > StreamingTexture_DEPRECATED Deprecated texture object containing streamed low mips.

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