Code review comment for lp:~stellarium/stellarium/gz_viewportOffset

Well, yes, if you zoom out too far, some artifacts/limitations of any projection become apparent even stronger than without offsetting center. I see some disturbing faces or lines when zooming out in stereographic projection near zenith, and faces of the "sphere border", but the "solution" would simply include an fov limit adaptation, but I think it is better like that, and users can zoom in a bit if the weird faces really disturb.