| Summary: | Blurry icons in various places using fractional scaling | ||
|---|---|---|---|
| Product: | [Plasma] plasmashell | Reporter: | Anya <anya.vanillagarden> |
| Component: | general | Assignee: | Plasma Bugs List <plasma-bugs-null> |
| Status: | RESOLVED INTENTIONAL | ||
| Severity: | normal | CC: | kde, nate |
| Priority: | NOR | ||
| Version First Reported In: | 6.0.4 | ||
| Target Milestone: | 1.0 | ||
| Platform: | Other | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
| Attachments: |
System tray icons, comparison
Start menu icon, task manager icons, comparison Desktop and dolphin 120% Desktop and dolphin 100% Dolphin icons comparison |
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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. |
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.