https://bugs.kde.org/show_bug.cgi?id=482336

--- Comment #4 from popov895 <popov...@ukr.net> ---
> Unfortunately improved Wayland fractional scaling support in Qt6 still
> cannot compensate for the fact that a 1.25px stroke can't be mapped onto a
> 1px pixel without either blurriness or clipping. There simply isn't a
> physical way to do this.

That's understandable, but they should still look the same since they're the
same size, right? Why not stop using those strokes and use a solid color
instead?

> That said, the text on screenshot of the Fonts page looks much worse than
> the text in other screenshots, which is unusual. The level of blurriness
> there is quite noticeable, and not expected. Can you still reproduce that
> after quitting System Settings and re-opening it? Is System Settings running
> under XWayland or something weird?

The font always looks blurry when global scaling set to 125%, and it's not
XWayland (checked with xwininfo and xlsclients). I also tried the following,
but nothing helped:
- disabling anti-aliasing
- changing sub-pixel rendering
- changing hinting
- changing scaling method for legacy applications (X11)
- changing RGB range
- changing font face
- changing QT_AUTO_SCREEN_SCALE_FACTOR, QT_ENABLE_HIGHDPI_SCALING,
QT_SCALE_FACTOR, QT_SCREEN_SCALE_FACTORS, QT_FONT_DPI

Below is the output of some commands, maybe it will be helpful.

> $ xdpyinfo | grep -B 2 resolution
> screen #0:
>   dimensions:    1920x1080 pixels (508x285 millimeters)
>   resolution:    96x96 dots per inch

> $ xrdb -query
> Xcursor.size:   30
> Xcursor.theme:  breeze_cursors
> Xft.antialias:  1
> Xft.dpi:        120
> Xft.hinting:    1
> Xft.hintstyle:  hintslight
> Xft.rgba:       rgb

> $ xrandr -q
> Screen 0: minimum 16 x 16, current 1920 x 1080, maximum 32767 x 32767
> eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y 
> axis) 340mm x 190mm
>    1920x1080     59.96*+
>    1440x1080     59.99
>    1400x1050     59.98
>    1280x1024     59.89
>    1280x960      59.94
>    1152x864      59.96
>    1024x768      59.92
>    800x600       59.86
>    640x480       59.38
>    320x240       59.52
>    1680x1050     59.95
>    1440x900      59.89
>    1280x800      59.81
>    1152x720      59.97
>    960x600       59.96
>    928x580       59.88
>    800x500       59.50
>    768x480       59.90
>    720x480       59.71
>    640x400       59.95
>    320x200       58.96
>    1600x900      59.95
>    1368x768      59.88
>    1280x720      59.86
>    1024x576      59.90
>    864x486       59.92
>    720x400       59.55
>    640x350       59.77

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