Nearest neighbor scaling?
Submitted by N. W.
Assigned to xf86-video-ati maintainers
would it be possible that you add a nearest-neighbor scaling mode to the driver, so that one could display 1920x1080 natively on a 3840x2160 monitor or 1280x720 natively on a 2560x1440 monitor and so on (one pixel becomes four pixels)?
There is some information on this topic over there: