Bug 467605

Summary: Plastik decorations have scaling artifacts on window title text
Product: [Plasma] kwin Reporter: Marco Rebhan <me>
Component: auroraeAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: kde
Priority: NOR    
Version: 5.27.3   
Target Milestone: ---   
Platform: NixOS   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Screenshot showing scaling artifacts

Description Marco Rebhan 2023-03-20 12:18:59 UTC
Created attachment 157440 [details]
Screenshot showing scaling artifacts

SUMMARY
On Wayland, when using the Plastik window decorations at non-100% (or at least non-integer) scaling, the window title has scaling artifacts (see attached screenshot).

STEPS TO REPRODUCE
1. Use Plasma Wayland session
2. Set screen to use 150% scaling
3. Switch to Plastik window decorations

OBSERVED RESULT
The window title has scaling artifacts, like it was rendered at 100% and then upscaled to 150%.

EXPECTED RESULT
The text is rendered smoothly, like when using Breeze decorations.

SOFTWARE/OS VERSIONS
Operating System: NixOS 23.05
KDE Plasma Version: 5.27.3
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8
Kernel Version: 6.1.19 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600X 6-Core Processor
Memory: 23.4 GiB of RAM
Graphics Processor: AMD Radeon RX Vega

ADDITIONAL INFORMATION
Comment 1 Marco Rebhan 2023-04-05 14:56:24 UTC
The behavior has changed on 5.27.4, now the title displays correctly on the 150% scaled monitor, but the scaling artifacts are now present on my other monitor with 100% scale factor.
Comment 2 David Edmundson 2024-06-04 11:51:31 UTC

*** This bug has been marked as a duplicate of bug 438401 ***