Masks that control what kind of Scene views and Game views Unity should render a GameObject in.
You can set masks on Scenes via EditorSceneManager.SetSceneCullingMask and on render batches via BatchRendererGroup.AddBatch.
| DefaultSceneCullingMask | Specifies the default culling mask for a Scene. Use the bits from this Scene culling mask for objects that you want to render in both in the Game view and the Scene view. |
| GameViewObjects | The bits from this mask specify GameObjects that Unity should render in Game view. |
| MainStageSceneViewObjects | The bits from this mask specify GameObjects that Unity should render in Scene views showing the main stage. |