| Parameter | Description | 
|---|---|
| pickingIndex | The picking index to encode. For example, a picking index passed from RenderPickingArgs.pickingIndex). | 
                  Vector4
        The Vector4 selectionId value used for rendering.
      
Translates a single integer picking index into a Vector4 selectionId value. The Vector4 selectionId is used to render the picking render textures during picking rendering.
Additional resources: HandleUtility.DecodeSelectionId, HandleUtility.RegisterRenderPickingCallback.