Just played around with it temporarily on Linux, to see if it'd work: use the next integer step for scaling UI, then downsample the result to match the display'

Just played around with it temporarily on Linux, to see if it'd work: use the next integer step for scaling UI, then downsample the result to match the display's actual resolution. This worked by enabling Virtual Super Resolution for an AMD card on Windows, and an equivalent looking result could be achieved with xrandr incantations. Sadly, the mouse ended up being confined to a subsection of the screen, which was a bug, but that should be fixed now: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/883319 https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/8...