---
title: MTLAccelerationStructureCurveGeometryDescriptor
framework: metal
role: symbol
role_heading: Class
path: metal/mtlaccelerationstructurecurvegeometrydescriptor
---

# MTLAccelerationStructureCurveGeometryDescriptor

A descriptor you configure with curve geometry for building acceleration structures.

## Declaration

```swift
class MTLAccelerationStructureCurveGeometryDescriptor
```

## Mentioned in

Improving ray-tracing data access using per-primitive data

## Topics

### Instance Properties

- [controlPointBuffer](metal/mtlaccelerationstructurecurvegeometrydescriptor/controlpointbuffer.md)
- [controlPointBufferOffset](metal/mtlaccelerationstructurecurvegeometrydescriptor/controlpointbufferoffset.md)
- [controlPointCount](metal/mtlaccelerationstructurecurvegeometrydescriptor/controlpointcount.md)
- [controlPointFormat](metal/mtlaccelerationstructurecurvegeometrydescriptor/controlpointformat.md)
- [controlPointStride](metal/mtlaccelerationstructurecurvegeometrydescriptor/controlpointstride.md)
- [curveBasis](metal/mtlaccelerationstructurecurvegeometrydescriptor/curvebasis.md)
- [curveEndCaps](metal/mtlaccelerationstructurecurvegeometrydescriptor/curveendcaps.md)
- [curveType](metal/mtlaccelerationstructurecurvegeometrydescriptor/curvetype.md)
- [indexBuffer](metal/mtlaccelerationstructurecurvegeometrydescriptor/indexbuffer.md)
- [indexBufferOffset](metal/mtlaccelerationstructurecurvegeometrydescriptor/indexbufferoffset.md)
- [indexType](metal/mtlaccelerationstructurecurvegeometrydescriptor/indextype.md)
- [radiusBuffer](metal/mtlaccelerationstructurecurvegeometrydescriptor/radiusbuffer.md)
- [radiusBufferOffset](metal/mtlaccelerationstructurecurvegeometrydescriptor/radiusbufferoffset.md)
- [radiusFormat](metal/mtlaccelerationstructurecurvegeometrydescriptor/radiusformat.md)
- [radiusStride](metal/mtlaccelerationstructurecurvegeometrydescriptor/radiusstride.md)
- [segmentControlPointCount](metal/mtlaccelerationstructurecurvegeometrydescriptor/segmentcontrolpointcount.md)
- [segmentCount](metal/mtlaccelerationstructurecurvegeometrydescriptor/segmentcount.md)

## Relationships

### Inherits From

- [MTLAccelerationStructureGeometryDescriptor](metal/mtlaccelerationstructuregeometrydescriptor.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Geometry descriptors

- [MTL4AccelerationStructureGeometryDescriptor](metal/mtl4accelerationstructuregeometrydescriptor.md)
- [MTLAccelerationStructureGeometryDescriptor](metal/mtlaccelerationstructuregeometrydescriptor.md)
- [MTL4AccelerationStructureTriangleGeometryDescriptor](metal/mtl4accelerationstructuretrianglegeometrydescriptor.md)
- [MTLAccelerationStructureTriangleGeometryDescriptor](metal/mtlaccelerationstructuretrianglegeometrydescriptor.md)
- [MTL4AccelerationStructureCurveGeometryDescriptor](metal/mtl4accelerationstructurecurvegeometrydescriptor.md)
- [MTLCurveType](metal/mtlcurvetype.md)
- [MTLCurveBasis](metal/mtlcurvebasis.md)
- [MTLCurveEndCaps](metal/mtlcurveendcaps.md)
- [MTL4AccelerationStructureBoundingBoxGeometryDescriptor](metal/mtl4accelerationstructureboundingboxgeometrydescriptor.md)
- [MTLAccelerationStructureBoundingBoxGeometryDescriptor](metal/mtlaccelerationstructureboundingboxgeometrydescriptor.md)