Created attachment 179802 [details] kolourpaint glitches SUMMARY I'm getting various graphics glitches with 1.25x scaling (or any fractional scaling factor inbetween 100-200%) One symptom is in kolourpaint if i use the selection tool to select something and then shrink back the rectangle(see screenshot) . If i open kolourpaint in xwayland mode with "Legacy X11 applications = scaled by the system" the bug is there. But with "apply scaling themselves" bug is gone. This also happens with Pinta but curiously does not happen with Gimp or Drawing. The other one is with coloured text characters in konsole. Originally reported here but with no resolution and i assume they're related: https://bugs.kde.org/show_bug.cgi?id=491562 Similar x11 behavior as with kolourpaint. Possibly related: https://bugs.kde.org/show_bug.cgi?id=466373 STEPS TO REPRODUCE 1. set fractional scaling to 1.25 2. open kolourpaint 3. drag a selection with selection tool and shrink it OBSERVED RESULT visual artifacts EXPECTED RESULT no visual artifacts Operating System: Arch Linux KDE Plasma Version: 6.3.3 KDE Frameworks Version: 6.12.0 Qt Version: 6.8.2 Kernel Version: 6.13.8-arch1-1 (64-bit) Graphics Platform: Wayland Graphics Processor 1: AMD Radeon 660M Product Name: ASUS TUF Gaming A15 FA507NU_FA507NU
Created attachment 179804 [details] konsole text glitches
Oh and forgot to mention in all cases the glitch disappears if i resize the window a tiny bit or force it to redraw.
> If i open kolourpaint in xwayland mode with "Legacy X11 applications = scaled by the system" the bug is there This isn't really supported or recommended; why are you forcing Kolourpaint into XWayland mode? It has native Wayland support so that should be used instead. If it works as a native Wayland app, isn't that preferable to use?
(In reply to Nate Graham from comment #3) > > If i open kolourpaint in xwayland mode with "Legacy X11 applications = scaled by the system" the bug is there > > This isn't really supported or recommended; why are you forcing Kolourpaint > into XWayland mode? It has native Wayland support so that should be used > instead. If it works as a native Wayland app, isn't that preferable to use? Sorry for the confusion, I only mentioned the xwayland tests because i thought that might help track down the bug because i noticed the bug was also happening there alongside the default Wayland code path. I do not usually use apps in xwayland mode if they support Wayland.
The title to this bug incorrect now because these glitches happen mainly in Wayland mode, not in xwayland. The Xwayland stuff i mentioned was in addition to this and may be disregarded if it's not helpful.
Gotcha, thanks. These look like app-specific issues; let's track Kolourpaint here. Can you open a new bug report about Konsole, and put it in the "see also" field of this one? Thanks!