---
title: frustum
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lowlevelrenderer/cullconfiguration/frustum-swift.property
---

# frustum

The frustum to test instances against.

## Declaration

```swift
var frustum: LowLevelRenderer.CullConfiguration.Frustum { get set }
```

## See Also

### Configuring the frustum

- [LowLevelRenderer.CullConfiguration.Frustum](realitykit/lowlevelrenderer/cullconfiguration/frustum-swift.struct.md)