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# setCompositionRenderer(_:)

Sets the composition parameter view for editing the input parameters of the provided renderer object.

```
func setCompositionRenderer(_ renderer: (any QCCompositionRenderer)!)
```

## Parameters

`renderer`

A `QCCompositionRenderer` object, either [`QCView`](/documentation/Quartz/QCView), [`QCRenderer`](/documentation/Quartz/QCRenderer), or [`QCCompositionLayer`](/documentation/Quartz/QCCompositionLayer). Pass `nil` to unset this renderer.

## Discussion

If the renderer is a [`QCView`](/documentation/Quartz/QCView) object, the view track the composition.

---

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