---
title: stepRate
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lowlevelmesh/layout/steprate
---

# stepRate

The number of instances that share the same per-instance vertex data.

## Declaration

```swift
var stepRate: Int
```

## Discussion

Discussion Used together with stepFunction. When stepFunction is .perInstance, the vertex shader advances to the next entry in this layout once per stepRate instances. Defaults to 1.

## See Also

### Configuring vertex stepping

- [stepFunction](realitykit/lowlevelmesh/layout/stepfunction.md)