---
title: primitiveDataBuffer
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4accelerationstructuregeometrydescriptor/primitivedatabuffer
---

# primitiveDataBuffer

Assigns optional buffer containing data to associate with each primitive in this geometry.

## Declaration

```swift
var primitiveDataBuffer: MTL4BufferRange { get set }
```

## Discussion

Discussion You can use zero as the buffer address in this buffer range.