# XAtlas

> The packing algorithm provided by xAtlas, a third-party UV packing library.

## Definition

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

```csharp
XAtlas = 1
```

### Remarks

This packing algorithm is slower than [LightingSettings.LightmapPackingMethod.Unity](/engine/6000.7/script-reference/unityengine/lightingsettings/lightmappackingmethod/unity.md), but produces tighter packing which can lower the number of lightmaps required.