Streaming Virtual Texturing requirements and compatibility

System requirements and render pipeline compatibility for Streaming Virtual Texturing.

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---This feature is experimental and not ready for production use. The feature and documentation might be changed or removed in the future.

Render pipeline support

In the High Definition Render Pipeline (HDRP) you can use Streaming Virtual Texturing (SVT) in Shaders you create with Shader Graph.

System requirements

GPU requirements

GPU compute
Texture2DArrays
AsyncReadBack

Supported platforms

Windows
Mac
Linux

Note

Streaming Virtual Texturing is not supported on platforms that use ARM architecture.

Some additional console platforms support this functionality. Consult the documentation for your target platform to determine if it supports Streaming Virtual Texturing.

Supported graphics APIs

DirectX 11
DirectX 12
Metal
Vulkan

Texture compatibility

SVT is built on top of Texture2D. SVT Textures go through the same importer, which limits the maximum texture size. SVT doesn't support textures larger than 16K x 16K. It also does not support UDIM Textures, or merging tiled image files into one large texture.

SVT doesn't support all Texture graphics formats. The supported formats are:

```
GraphicsFormat::kFormatRGBA_DXT1_SRGB
```
```
GraphicsFormat::kFormatRGBA_DXT1_UNorm
```
```
GraphicsFormat::kFormatRGBA_DXT3_SRGB
```
```
GraphicsFormat::kFormatRGBA_DXT3_UNorm
```
```
GraphicsFormat::kFormatR_BC4_UNorm
```
```
GraphicsFormat::kFormatRG_BC5_UNorm
```
```
GraphicsFormat::kFormatRGB_BC6H_SFloat
```
```
GraphicsFormat::kFormatRGB_BC6H_UFloat
```
```
GraphicsFormat::kFormatRGBA_BC7_SRGB
```
```
GraphicsFormat::kFormatRGBA_BC7_UNorm
```
```
GraphicsFormat::kFormatR8_SRGB
```
```
GraphicsFormat::kFormatR8_UNorm
```
```
GraphicsFormat::kFormatR8G8_SRGB
```
```
GraphicsFormat::kFormatR8G8_UNorm
```
```
GraphicsFormat::kFormatR8G8B8_SRGB
```
```
GraphicsFormat::kFormatR8G8B8_UNorm
```
```
GraphicsFormat::kFormatR8G8B8A8_SRGB
```
```
GraphicsFormat::kFormatR8G8B8A8_UNorm
```
```
GraphicsFormat::kFormatR16_SFloat
```
```
GraphicsFormat::kFormatR16_UNorm
```
```
GraphicsFormat::kFormatR16G16_SFloat
```
```
GraphicsFormat::kFormatR16G16_UNorm
```

GraphicsFormat::kFormatR16G16B16A16_SFloat

GraphicsFormat::kFormatR16G16B16A16_UNorm

```
GraphicsFormat::kFormatR32_SFloat
```
```
GraphicsFormat::kFormatR32G32_SFloat
```

GraphicsFormat::kFormatR32G32B32A32_SFloat

GraphicsFormat::kFormatA2B10G10R10_UNormPack32

SVT does not support the following:
- Mirror wrap mode.
- Per-axis clamping (for example, repeating horizontally while clamping vertically).
- Textures with resolutions that aren't a power of two.
Textures in SVT don't have mipmaps smaller than the tile size (128 x 128 pixels). SVT clamps the sampling to this mipmap level, so you can see aliasing for certain content at a distance.
SVT only supports trilinear filtering in the Player, and not in the Editor.
SVT only supports streaming from disk in the Player, and not in the Editor.
The maximum anisotropic filtering level is 8. This is because each tile has an 8-pixel border.
You cannot set Textures that are part of a stack dynamically in the Player. In the Player, you cannot call
```
Material.SetTexture
```
or
```
Renderer.SetPropertyBlock
```
to modify the Texture Stack.

Unity feature compatibility

SVT does not support the following:
- AssetBundles, including Addressables and Live Link.
- Scriptable Build Pipeline (SBP) and Subscenes.
- Crunch compression.
The aspect ratios of stack layers must match.

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