Blurry scaling for native wayland apps

[maya-doshi]

• Sway Version:

  • sway version 1.9

• Debug Log:

  • https://gist.github.com/maya-doshi/6434af3b62f4ac3e4d5236c7f1b328ff

• Configuration File: My config is very close to stock https://gist.github.com/maya-doshi/b5cbaf8fc6421275f21a3b0d7b936048\ https://gist.github.com/maya-doshi/975e6a4551bb85d82734e513d3f47c0a

• Description:

  • this only the case for my laptops internal 2880*1800 OLED screen and not an external 4k monitor at 1.5 scale.
  • This was not an issue on sway 1.8.1 and doesn't happen when using integer scaling
  • Also not an issue on the latest master commit built from source but is an issue on 1.9 built from source
  • Waybar, firefox, thunderbird, gnome disks(gtk3), sioyek, zathura, qownnotes(qt5), fuzzel and even the sway exit dialog are blurry.
  • gtk4 apps, mpv and foot are not

[akelmanson]

You can enable fractional scaling in firefox by visiting the about:config page and setting the widget.wayland.fractional-scale.enabled preference.

[sefidel]

I can reproduce this issue, although foot is also affected on my end. Works fine on 1.8.1, bisected to v1.9-rc1 and the scaling is worse on v1.10. Possibly caused by fractional scaling changes made on wlroots 0.17?

1.8.1

1.9-rc1

1.10-dev

[maya-doshi]

I've been on NixOS 24.05 and I thought the issue was gone. But it comes back at 1.0 scale on an external 4k monitor when there is an overlap between it and my 1.5 scaled laptop. Maybe it has to do with overlapping displays with different scaling?

[sefidel]

Hmm, I'm experiencing this issue on my internal display (at 1.25 scale factor) without any external displays connected.

[maya-doshi]

@sefidel it happened for me even when the external display was just in the outputs of the config and not actually plugged in. maybe i just found another way to trigger it 🤷‍♀️

[GoldsteinE]

Reproduces for me on 1.5 scale, no external displays. Kinda visible in foot, but much worse in Firefox.