This repository contains the source code for the com.unity.formats.usd package. It includes a set of libraries designed to support the use of USD in C#, as well as code to import and export USD files into the editor. The goal of this package is to make it maximally easy to integrate and explore Universal Scene Description.
Pixar's USD Kitchen Set in the Unity Editor.
For full documentation of this package, including usage, see the package docs.
The following is a brief listing of currently supported features:
- Importing and exporting USD:
- Import as GameObject, Prefab, or Timeline Clip
- File formats: .usd, .usda, .usdc, .usdz
- Export Game Objects to USD
- File formats: .usd, .usda, .usdc, .usdz
- Export of Transform Overrides
- Export via Recorder package
- Import as GameObject, Prefab, or Timeline Clip
- Composition:
- Variant Selection
- Payloads
- Load All and Individual
- Layer stacks
- Geometry:
- UV Set
- Vertex Colour
- Instancing:
- Point Instancing
- Scenegraph Instancing
- Primitive Types:
- Meshes:
- Arbitrary Primvars
- Vertex Colors
- Materials:
- Standard Shader and Limited HDRP and URP Support
- Meshes:
- Cameras
- Lightmaps:
- Automatic Lightmap UV Unwrapping
- Animation:
- Timeline Playback:
- Skeletal Animation via USDSkel
- Animated Meshes
- Timeline Recording Track via Unity Recorder Package
- Timeline Playback:
- General:
- High and Low Level Access to USD API via C#
We do not currently support the following:
- Geometry:
- Multiple UV Sets
- Importing mesh UVs for a prim without a material attached
- Composition:
- Purposes
- Primitive Types:
- Camera
- We do not currently import and export all physical camera settings
- Materials:
- Transparency Settings (these can be set manually)
- Some values are unassigned when importing URP
- Lights
- Camera
- Animation:
- Blend Shapes
- General:
- Custom prims
The USD Unity SDK is licensed under the terms of the Apache license. See LICENSE for more information.
See CONTRIBUTING.md
See BUILDING.md