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by jsheard 855 days ago
Doesn't macOS do it the other way, rendering at the next highest integer scale factor and then downscaling to fit the display?

If you can't render fractional factors natively for tech debt reasons then that's the least bad way to do it.
2 comments
throwaway11205 855 days ago
MacOS way is better, text is blurry, but much less. I still don't like it though, but can use it in an emergency.

But there apparently is another way that Xorg and Windows uses. I have perfectly crisp (as far as my eyes can tell) UI and text on both systems at 150% scale (27" 4K display).

> for tech debt reasons

I thought Wayland was supposed to fix the tech debt - so now it introduced some that makes bare basic features impossible?

link
DiabloD3 855 days ago
It does for any app that can't scale; all modern OSX apps can scale natively. I've been using that trick for integer-like scaling for years to deal with fractional scaling while preserving the quasi-aliasing ("crispness") of the source image.

However, Wayland does not prescribe any method for non-integer scaling. Any Wayland WM could choose to do the same thing, and it would be hardware accelerated essentially for free.

Both X11 and Wayland WMs typically don't use this trick, and neither does Windows.

link