//在场景loading开始时设置camera statck
//loading时场景被销毁，这个时候需要将UI摄像机从overlay->base
public static void SetCameraStackAtLoadingStart(this CameraManagerComponent self)
{
var ui_camera = UIManagerComponent.Instance.GetUICamera();
ui_camera.GetUniversalAdditionalCameraData().renderType = CameraRenderType.Base;
self.ResetSceneCamera();
}