---
title: internalRenderBlock
framework: Audio Toolbox
role: symbol
role_heading: Instance Property
platforms: [iOS, iPadOS, Mac Catalyst, macOS, tvOS, visionOS]
path: audiotoolbox/auaudiounit/1439864-internalrenderblock
---

# internalRenderBlock

The block which you must provide, via a getter, in order to implement rendering.

## Declaration

```swift
var internalRenderBlock: AUInternalRenderBlock { get }
```

## See Also

### Customizing the Audio Unit Behavior

- [registerSubclass(_:as:name:version:)](registersubclass(_:as:name:version:).md)
- [shouldChange(to:for:)](shouldchange(to:for:).md)
- [setRenderResourcesAllocated(_:)](setrenderresourcesallocated(_:).md)
- [midiOutputBufferSizeHint](midioutputbuffersizehint.md)
- [AUInternalRenderBlock](../auinternalrenderblock.md)