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

# cullingPlanes

The planes that define the culling volume.

## Declaration

```swift
var cullingPlanes: [LowLevelRenderer.CullConfiguration.Plane] { get set }
```

## Discussion

Discussion An instance is culled if its mesh part bounds lie entirely outside any single plane.

## See Also

### Creating a frustum

- [init(cullingPlanes:)](realitykit/lowlevelrenderer/cullconfiguration/frustum-swift.struct/init(cullingplanes:).md)