Unless the device orientation is updated in StereoRenderer.scnRenderer’s delegate methods (not SCNView’s), the display timing will be the next frame.
Also replace public setSceneRendererDelegate(_:for:) method with sceneRenderDelegate property at StereoView. The delegate methods are called before drawing both eyes, but only renderer(_:didRenderScene:atTime:) is called after the drawing of both eyes is finished.
Unless the device orientation is updated in
StereoRenderer.scnRenderer’s delegate methods (notSCNView’s), the display timing will be the next frame.Also replace public
setSceneRendererDelegate(_:for:)method withsceneRenderDelegateproperty atStereoView. The delegate methods are called before drawing both eyes, but onlyrenderer(_:didRenderScene:atTime:)is called after the drawing of both eyes is finished.