# BuiltInLegacyDiffuse

> A built-in material that uses the legacy Lambert (diffuse) lighting model and has optional normal map support.

## Definition

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

> **Warning:**
>
> **Deprecated.** Enum type MaterialType is not used any more.

```csharp
BuiltInLegacyDiffuse = 1
```

### Remarks

The actual built-in shader used is Nature/Terrain/Diffuse.