# isPreviousViewValid

> Determines whether XRDisplaySubsystem.XRRenderParameter.previousView is valid for use in a frame.

## Definition

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

```csharp
public bool isPreviousViewValid
```