# sceneCullingMask

> Use this bit mask to discard the draw commands in a particular context. A draw command is not discarded if the expression (1 << layer) & sceneCullingMask is true. This field is typically used when rendering Editor previews.

## Definition

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

```csharp
public readonly ulong sceneCullingMask
```