Comment 3 for bug 1419911

Yep, GNOME does it extremely well under Wayland, and it's actually the main reason for me (and I guess many others with high-resolution laptop screens) why I just can't use any other desktop environment.

https://wiki.gnome.org/Design/SystemSettings/Displays contains some nice ideas on that, although I'd find it even more awesome if we can completely get rid of the scaling steps and use a slider instead.