Created attachment 169655 [details] System tray icons, comparison When scaling factor is set to 120%, desktop icon labels, systray icons, taskbar icons and some dolphin icons become blurry. The clock seems unaffected. There may be blurry icons in other places as well. I made screenshots for comparison between 100% and 120%, but at a quick glance the problems persist with other fractional scaling factors. Icons flicker a little when hovering mouse cursor over them, but this happens at 100% as well. I logged out and back in after changing the scaling factor every time. Tested mainly on a (single) 2560x1440 monitor, Nvidia 550.78. Panel is default but Floating is disabled, System Tray option "Panel icon size" is set to "Scale with Panel height", and I changed the panel height for every screenshot to demonstrate how icons look at different sizes. I confirmed 120% looks blurry on a different machine as well (different resolution and GPU). I hope the screenshots make sense otherwise. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.0.4 KDE Frameworks Version: 6.2.0 Qt Version: 6.7.0 Kernel Version: 6.9.1-arch1-1 (64-bit) Graphics Platform: Wayland Graphics Processor: NVIDIA GeForce RTX 4070 Ti/PCIe/SSE2 I see other bug reports related to taskbar blurriness but they seem to be a different problem, as in my case hovering the mouse doesn't change sharpness, and the problem persists when Floating is disabled. Apologies if an identical bug report already exists though.
Created attachment 169656 [details] Start menu icon, task manager icons, comparison
Created attachment 169658 [details] Desktop and dolphin 120%
Created attachment 169659 [details] Desktop and dolphin 100%
Created attachment 169660 [details] Dolphin icons comparison
I can confirm the issue, but I'm afraid a certain amount of blurriness is unavoidable with KDE's current icon rendering technology at low fractional scale factors and screens with a low to medium pixel density — especially when using monochrome line-art icons with 1px line widths, as KDE icons are. To learn more about the reason why, read https://community.kde.org/Get_Involved/Design/Frequently_Discussed_Topics#Pixel-alignment_for_SVG_icons In an ideal world we'd be able to use sub-pixel rendering to avoid blurriness for thin monochrome icons the way we can for fonts, but this is a level of technology we unfortunately don't have in KDE, or anywhere else outside of the font-based icons in macOS and Windows, for that matter.
(In reply to Nate Graham from comment #5) > I can confirm the issue, but I'm afraid a certain amount of blurriness is > unavoidable with KDE's current icon rendering technology at low fractional > scale factors and screens with a low to medium pixel density — especially > when using monochrome line-art icons with 1px line widths, as KDE icons are. > > To learn more about the reason why, read > https://community.kde.org/Get_Involved/Design/ > Frequently_Discussed_Topics#Pixel-alignment_for_SVG_icons > > In an ideal world we'd be able to use sub-pixel rendering to avoid > blurriness for thin monochrome icons the way we can for fonts, but this is a > level of technology we unfortunately don't have in KDE, or anywhere else > outside of the font-based icons in macOS and Windows, for that matter. Aw, that's a shame. Thank you for the info though.