---
title: controlPointFormat
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlaccelerationstructurecurvegeometrydescriptor/controlpointformat
---

# controlPointFormat

The format of the control points in the buffer.

## Declaration

```swift
var controlPointFormat: MTLAttributeFormat { get set }
```

## Discussion

Discussion The default value is MTLAttributeFormat.float3.