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# vertexBuffer

Associates a vertex buffer containing triangle vertices.

```
var vertexBuffer: MTL4BufferRange { get set }
```

## Discussion

You are responsible for ensuring that the format of all vertex positions match the [`vertexFormat`](/documentation/Metal/MTL4AccelerationStructureTriangleGeometryDescriptor/vertexFormat) property, and
that the buffer address for the buffer range is not zero.

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