# smoothness

> The smoothness value of the splat layer when the main texture has no alpha channel.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.TerrainModule

> **Warning:**
>
> **Deprecated.** SplatPrototype is obsolete. Use TerrainLayer instead.

```csharp
public float smoothness { get; set; }
```

### Remarks

This is only applicable when using the built-in standard material for terrain.

Valid range is 0.0f to 1.0f.