Bug 464054

Summary:	[Wayland] xwayland app with fractional scale is semi-blurry
Product:	[Plasma] kwin	Reporter:	zvova7890
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	kde
Priority:	NOR
Version First Reported In:	5.26.5
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description zvova7890 2023-01-09 16:07:11 UTC

I use 2560x1440 monitor with 150% scale. Xwayland is using "native scale" option. And it is work fine, but I have noticed, that the left side of the window is more sharp than right side. The picture is slowly going to blurry from left to the right side.  
I think it is some rounding issue, and pixmap at final result is a little bit resized.
PS. I can't take good quality screenshot because spectacle gets blurry pixmap.

STEPS TO REPRODUCE
1. Use 150% scale with wayland session
2. Use native scale for x11 app
3. Maximize X11 app and take a look for the sharpness at left side and right side

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.26.5
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.8
Kernel Version: 6.1.3-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × 11th Gen Intel® Core™ i7-11700 @ 2.50GHz
Memory: 31.2 ГиБ of RAM
Graphics Processor: AMD Radeon RX 6800 XT
Manufacturer: ASUS

Comment 1 David Edmundson 2023-01-09 16:14:13 UTC

This should be better in 5.27.0.

Please test out the beta and confirm if there's still an issue.