# DiffuseAlphaChannel

> Smoothness value comes from the alpha channel of TerrainLayer.diffuseTexture.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/7000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.TerrainModule

```csharp
[InspectorName("Diffuse Alpha Channel")]
DiffuseAlphaChannel = 1
```