# ConstantMultipliedByDiffuseAlpha

> Smoothness value comes from a mix of TerrainLayer.smoothness and the alpha channel of TerrainLayer.diffuseTexture

## Definition

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

```csharp
[InspectorName("Constant * Diffuse Alpha")]
ConstantMultipliedByDiffuseAlpha = 0
```