# EmissiveIsBlack

> The emissive lighting is guaranteed to be black. This lets the lightmapping system know that it doesn't have to extract emissive lighting information from the material and can simply assume it is completely black.

## Definition

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

```csharp
EmissiveIsBlack = 4
```

### Remarks

Additional Resources: RealtimeEmissive.