---
title: outputChannel
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lowlevelmaterialresource/simplesurfacedescriptor/outputchannel-swift.property
---

# outputChannel

The surface output channel the shader writes to.

## Declaration

```swift
var outputChannel: LowLevelMaterialResource.SimpleSurfaceDescriptor.OutputChannel { get set }
```

## See Also

### Configuring the output

- [LowLevelMaterialResource.SimpleSurfaceDescriptor.OutputChannel](realitykit/lowlevelmaterialresource/simplesurfacedescriptor/outputchannel-swift.enum.md)
- [outputOpacity](realitykit/lowlevelmaterialresource/simplesurfacedescriptor/outputopacity.md)