# passIndex

> Shader Pass used to update the Custom Render Texture for this Update Zone.

## Definition

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

```csharp
public int passIndex
```

### Remarks

Additional Resources: [CustomRenderTexture](/engine/6000.6/script-reference/unityengine/customrendertexture.md).