Streaming Virtual Texturing 要求和兼容性

Unity version: 2020.1.0b9 or newer

渲染管线支持

In Unity 2020.1, with High Definition Render Pipeline versions 9.0.0-preview and newer, you can use Streaming Virtual Texturing (SVT) in Shaders you create with Shader Graph.

系统要求

GPU 要求

• GPU 计算
• Texture2DArrays
• AsyncReadBack

支持的平台

• Windows
• Mac
• Playstation 4
• Xbox One

支持的图形 API

• DirectX 11
• DirectX 12
• Metal
• Vulkan

纹理兼容性

• SVT is built on top of Unity Texture2D. SVT textures go through the same importer, which limits the maximum texture size. Currently, 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 不支持：

  • 镜像包裹模式。
  • 每轴钳制（例如，水平重复同时垂直钳制）。
  • 分辨率不是 2 的幂的纹理。

• SVT 中的纹理没有小于平铺大小（128 x 128 像素）的 Mipmap。SVT 将采样钳制到此 mip，因此您可以在远处看到某些内容的锯齿。

• SVT supports trilinear filtering only in the Player, and not in the Editor.

• SVT supports streaming from disk only in the Player, and not in the Editor.

• The maximum anisotropic filtering level is 8, 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 功能兼容性

• SVT 不支持：

  • AssetBundles，包括 Addressables 和 Live Link。
  • 可编程构建管线 (SBP) 和子场景。
  • Crunch 压缩。

• 堆叠层的纵横比必须匹配。