Maybe addresses #1659. And I hope this make sense. I think it is not because @ChillerDragon cannot change to a higher resolution, it is just that SDL reports video modes in canvas resolution, and we create window with window size which can have a high resolution within a smaller window (due to how HiDPI works on mac). Therefore, the selected resolution is actually the max resolution you can get with HiDPI mode enabled on mac, which is rendering in the native resolution as well. Luckly, ...