Bug 495926 - Font anti-aliasing "exclude range" does not exclude font ranges
Summary: Font anti-aliasing "exclude range" does not exclude font ranges
Status: REPORTED
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_fonts (other bugs)
Version First Reported In: 6.2.1
Platform: Neon Linux
: NOR normal
Target Milestone: ---
Assignee: Plasma Bugs List
URL:
Keywords: qt6
Depends on:
Blocks:
 
Reported: 2024-11-07 15:58 UTC by edfardos
Modified: 2024-11-17 17:26 UTC (History)
1 user (show)

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Description edfardos 2024-11-07 15:58:28 UTC 
SUMMARY
Font anti-aliasing "exclude range" does not exclude font ranges from anti-aliasing for KDE/QT applications

STEPS TO REPRODUCE
systemsettings->Text&Fonts->Fonts
anti-aliasing [x] Enable
[x] Exclude range from anti-aliasing
[1pt] to [24pt]
sub-pixel rendering [RGB]
Hinting [slight]
[x] force font DPI: [144]

OBSERVED RESULT
All qt/kde apps have anti-aliased fonts regardless of font size, except kwin which renders properly.
All non-qt/kde apps honor the exclusion range (thunderbird, firefox, etc)

EXPECTED RESULT
All qt/kde apps have non-anti-aliased fonts from 1-24, anti-aliased fonts >24pt.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.2.1
KDE Plasma Version: 6.2.1
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION
~/.config/fontconfig/fonts.conf is properly written and used by non-KDE apps
Anti-aliasing is not required for well-hinted fonts on high-dpi 4K displays
Blurry fonts are an accessibility issue.
Comment 1 edfardos 2024-11-07 16:01:45 UTC 
Additionally, Global Scale set to 150%