# OcclusionCull

> When this flag is set, Unity performs occlusion culling as part of the culling operation.

## Definition

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

```csharp
OcclusionCull = 2
```

### Remarks

Default value: set if the [Camera](/engine/6000.7/script-reference/unityengine/camera.md) from which you obtained the CullingParameters object has [Camera.useOcclusionCulling](/engine/6000.7/script-reference/unityengine/camera/useocclusionculling.md) set to `true`. Otherwise, unset.

Additional Resources: [Camera.useOcclusionCulling](/engine/6000.7/script-reference/unityengine/camera/useocclusionculling.md), [Occlusion culling](/engine/6000.7/manual/cameras/occlusion-culling/occlusion-culling.md), [ScriptableCullingParameters.cullingOptions](/engine/6000.7/script-reference/unityengine/rendering/scriptablecullingparameters/cullingoptions.md), [ScriptableRenderContext.Cull](/engine/6000.7/script-reference/unityengine/rendering/scriptablerendercontext/cull.md), [CullingResults](/engine/6000.7/script-reference/unityengine/rendering/cullingresults.md).