Unity3D 摄像机cullingMask操作

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void OnGUI()
{
        if (GUI.Button(new Rect(300, 50, 100, 30), "隐藏UI层"))
        {
            UICameta.cullingMask &= ~(1 << LayerMask.NameToLayer("UI"));
        }
        if (GUI.Button(new Rect(300, 100, 100, 30), "显示"))
        {
            UICameta.cullingMask |= (1 << LayerMask.NameToLayer("UI"));
        }
        if (GUI.Button(new Rect(300, 100, 100, 30), "全部隐藏"))
        {
            UICameta.cullingMask = ~(1 << LayerMask.NameToLayer("UI"));
        }
}