# TerrainExtensions

> Extension methods to the Terrain class, used only for the UpdateGIMaterials method used by the Global Illumination System.

## Definition

* **Type:** Class
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.TerrainModule

```csharp
public static class TerrainExtensions
```

## Static Methods

| Method                                                                                                  | Description                                                                                    |
| ------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- |
| [UpdateGIMaterials](/engine/6000.6/script-reference/unityengine/terrainextensions/updategimaterials.md) | Schedules an update of the albedo and emissive Textures of a system that contains the Terrain. |