private static void SetRenderScale(float renderScale, float renderViewportScale)
 {
     if (Mathf.Abs(VRTK_SharedMethods.GetEyeTextureResolutionScale() - renderScale) > float.Epsilon)
     {
         VRTK_SharedMethods.SetEyeTextureResolutionScale(renderScale);
     }
     if (Mathf.Abs(XRSettings.renderViewportScale - renderViewportScale) > float.Epsilon)
     {
         XRSettings.renderViewportScale = renderViewportScale;
     }
 }