Bug 424587

Summary:	Plasma notification pop-ups suffer visual glitches with high DPI scaling
Product:	[Plasma] kwin	Reporter:	Nate Graham <nate>
Component:	wayland-generic	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	nicolas.fella
Priority:	NOR
Version:	git master
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Screensoht Another Screenshot

Description Nate Graham 2020-07-23 21:36:50 UTC

All KDE software built from git master as of an hour ago.

See attached screenshot. With a high DPI scale factor (tested both 200% and 250%), Plasma notification popups suffer from the following visual glitches:
- The plasmoidheader does not touch the left and right edges of the window
- The corners are sharp and pixelated rather than smooth, rounded, and anti-aliased.

Comment 1 Nate Graham 2020-07-23 21:37:57 UTC

Created attachment 130351 [details]
Screensoht

Attaching a photo from my phone because Spectacle is incapable of taking screenshots on Wayland with proper resolution (Bug 409762), which masks the issue.

Comment 2 Nate Graham 2020-07-23 21:55:49 UTC

The corner glitchiness is masked if the notification appears over a light colored background, but will be visible if it appears over a darker one.

Comment 3 Nicolas Fella 2020-07-23 23:45:42 UTC

Can confirm the corner issue, but the header works fine for me on 2x

Comment 4 Nicolas Fella 2020-07-23 23:46:53 UTC

Created attachment 130354 [details]
Another Screenshot

Comment 5 Nicolas Fella 2020-07-23 23:48:29 UTC

My corners look better too, so I can't confirm either

Comment 6 Nate Graham 2020-07-24 03:11:19 UTC

That's on Wayland with a high DPI screen and ≥200% scaling?

Comment 7 Nicolas Fella 2020-07-24 09:11:43 UTC

yes, Wayland and 2x scaling. I do have a non-scaled one too, but the notification is on the scaled one

Comment 8 Nate Graham 2020-07-25 00:04:42 UTC

Fixed by clearing the plasma SVG cache after changing the scale factor.

Marking as a duplicate of Bug 424615, and will probably be fixed with https://invent.kde.org/frameworks/plasma-framework/-/merge_requests/50.

*** This bug has been marked as a duplicate of bug 424615 ***