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# LowLevelMesh.VertexSemantic.uv0

The semantic for the first UV channel, also known as UV0.

```
case uv0
```

## Discussion

RealityKit’s standard materials, such as [`UnlitMaterial`](/documentation/RealityKit/UnlitMaterial) and [`PhysicallyBasedMaterial`](/documentation/RealityKit/PhysicallyBasedMaterial),
interpret `uv0` as a texture coordinate.
However, your shaders can use this semantic for any data.

---

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