# BeforeScreenspaceMask

> Before directional light screenspace shadow mask is computed.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.Rendering](/engine/6000.5/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
BeforeScreenspaceMask = 2
```

### Remarks

Directional lights when using non-mobile shadows "gather" shadowmap into a screenspace buffer and do PCF filtering during this step. Later on actual object rendering just samples this screenspace buffer.

This light event executes command buffers when the screen-space mask render target is set and cleared, and the shadow cascade parameters are set. Note that the shadow mask is not yet computed.