void OnOverlayDepthChanged(SvrOverrideSettings.eDepth depth)
 {
     foreach (SvrOverlay overlay in overlays)
     {
         overlay.Depth = depth == SvrOverrideSettings.eDepth.NoOverride ?
                         (int)settings.overlayDepth : (int)depth;
     }
 }
 void OnEyeDepthChanged(SvrOverrideSettings.eDepth depth)
 {
     foreach (SvrEye eye in eyes)
     {
         eye.Depth = depth == SvrOverrideSettings.eDepth.NoOverride ?
                     (int)settings.eyeDepth : (int)depth;
     }
 }