# Smoothness

> The render request returns the materials smoothness buffer.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

> **Warning:**
>
> **Removed.** The RenderRequest struct is obsolete, use the function overload with RequestData of supported types such as RenderPipeline.StandardRequest

```csharp
Smoothness = 11
```

### Remarks

Outputs a buffer that maps the material smoothness value of the material to a grayscale RGB value at each pixel. Alpha is undefined. The buffer will be generated from the camera used in the request.