---
title: instanceDescriptorStride
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlinstanceaccelerationstructuredescriptor/instancedescriptorstride
---

# instanceDescriptorStride

The stride, in bytes, between instance descriptions.

## Declaration

```swift
var instanceDescriptorStride: Int { get set }
```

## Discussion

Discussion The stride needs to be at least 64 bytes and needs to be a multiple of 4 bytes. Defaults to 64 bytes.

## See Also

### Specifying the list of instances

- [instanceCount](metal/mtlinstanceaccelerationstructuredescriptor/instancecount.md)
- [instanceDescriptorBuffer](metal/mtlinstanceaccelerationstructuredescriptor/instancedescriptorbuffer.md)
- [instanceDescriptorBufferOffset](metal/mtlinstanceaccelerationstructuredescriptor/instancedescriptorbufferoffset.md)