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# MTL4AccelerationStructureCurveGeometryDescriptor

Describes curve geometry suitable for ray tracing.

```
class MTL4AccelerationStructureCurveGeometryDescriptor
```

## Overview

Use a [`MTLResidencySet`](/documentation/Metal/MTLResidencySet) to mark residency of all buffers this descriptor references when you build this
acceleration structure.

---

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