---
title: surface
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lowlevelmaterialresource/descriptor/surface
---

# surface

The fragment-stage surface shader.

## Declaration

```swift
var surface: LowLevelMaterialResource.SurfaceShader { get set }
```

## See Also

### Configuring the shaders

- [geometry](realitykit/lowlevelmaterialresource/descriptor/geometry.md)