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# primitiveDataStride

Defines the stride, in bytes, between each primitive’s data in the primitive data buffer [`primitiveDataBuffer`](/documentation/Metal/MTL4AccelerationStructureGeometryDescriptor/primitiveDataBuffer) references.

```
var primitiveDataStride: Int { get set }
```

## Discussion

You are responsible for ensuring the stride is at least [`primitiveDataElementSize`](/documentation/Metal/MTL4AccelerationStructureGeometryDescriptor/primitiveDataElementSize) in size and a multiple of 4 bytes.

This property defaults to `0` bytes,  which indicates the stride is equal to [`primitiveDataElementSize`](/documentation/Metal/MTL4AccelerationStructureGeometryDescriptor/primitiveDataElementSize).

---

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