private static void SetCallbackEnable(bool enable)
 {
     if (enable == _CallbackMode)
     {
         return;
     }
     if (enable)
     {
         if (UpdateDistortedMaterial)
         {
             ViveSR_DualCameraImageCapture.RegisterDistortedCallback();
         }
         if (UpdateUndistortedMaterial)
         {
             ViveSR_DualCameraImageCapture.RegisterUndistortedCallback();
         }
         if (UpdateDepthMaterial)
         {
             ViveSR_DualCameraImageCapture.RegisterDepthCallback();
         }
     }
     else
     {
         ViveSR_DualCameraImageCapture.UnregisterDistortedCallback();
         ViveSR_DualCameraImageCapture.UnregisterUndistortedCallback();
         ViveSR_DualCameraImageCapture.UnregisterDepthCallback();
     }
     _CallbackMode = enable;
 }