Bug 432814

Summary: Make the transition from drag transparency to blur smoother
Product: [Plasma] kwin Reporter: jan.claussen10
Component: effects-variousAssignee: KWin default assignee <kwin-bugs-null>
Status: CONFIRMED ---    
Severity: minor CC: nate
Priority: NOR    
Version First Reported In: 5.20.5   
Target Milestone: ---   
Platform: Manjaro   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description jan.claussen10 2021-02-11 19:30:09 UTC 
SUMMARY
When you have a transparent blur as background for e.g. the terminal or Dolphin and the drag transparency activated, the blur disappears while draggin and when you release it the transition from transparency to the blur is very ugly. 

STEPS TO REPRODUCE
1. Set a transparent theme and background with blur in e.g. the terminal
2. Activate window dragging transparency
3. Drag a window and release

OBSERVED RESULT
The transition is very ugly. 

EXPECTED RESULT
The transition could be smoother. It seems like the effects are not stopped and reactivated independently. There should be some kind of waiting for one effect to deactivate and the other to reactivate again. 

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
Comment 1 jan.claussen10 2022-05-05 19:07:11 UTC 
Just saw you confirm this one. This bug is actually caused by the combination of dragging transparency and maximizing effects. If you turn of either one, it is fine. It seems like the maximizing effect is slowing down the transparency effects, which doesn't look nice. I have just turned of dragging transparency since I realized that.