[fluffything]

HiDPI displays is what I see mentioned the most. But when you then ask if fractional scaling works on Wayland, the answer is "yes, but it doesn't work for any app you actually use".

If all you want to do is download a "demo" terminal, and put it in a HiDPI display, and enable fractional scaling, to show it to your friends, then yes, this works.

If you want to get some work done on any app (a text editor, web browser, ...). Then its worse than Xorg at the moment.

[pkulak]

Totally unrelated, but I refuse to buy an HDPI monitor until someone makes one at a resolution that can use integer scaling. Fractional scaling will _never_ look good. Even Apple, who controls their entire stack, doesn't like fractional scaling and exclusively makes monitors and displays that support 2X scaling. Everyone looking for good fractional scaling support is going to be looking for a very long time, no matter what compositor they use.

[pedrocr]

Apple does fractional scaling in all their laptops. And the reason it doesn't always look great is that everyone has decided to do integer scaling and then scale down for fractional scaling instead of just rendering at the destination resolutions. Most things you care about for sharpness are already resolution independent (fonts, images) and would just work. Both Chrome and Firefox already render the whole browser in a resolution independent way but end up being rendered at 2x and scaled down for less sharpness and performance than just asking them directly to render whatever window size and scaling factor is needed. Hopefully Wayland will end up fixing this IMHO bad decision.

To avoid all this right now it's possible to just pick 1x or 2x and tweak font sizes to get a good mid-step. For a single screen this always works, but it makes combining different ones harder.

[pedrocr]

This is false. I can and do set whatever scale factor I want for each screen in sway and all apps are scaled correctly. This includes my browser, my text editor, my terminal, word processor and spreadsheet. There's literally no app I use where I have a problem.