Bug 451664

Summary: Window resizing effect gone
Product: [Plasma] kwin Reporter: gregorystarr00
Component: compositingAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED INTENTIONAL    
Severity: normal CC: nate
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Manjaro   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description gregorystarr00 2022-03-18 21:54:26 UTC 
SUMMARY
I used to use this effect on my PC where, instead of updating the window as you resized it, it displayed a semitransparent box, and the window repainted when you let go of the mouse button. I really liked how this looked, and as it is the window struggling to update as you scale it looks really janky and ugly, not to mention laggy, even on my PC with a 1070ti and a Ryzen 7 3700x. For some reason, this effect is gone and doesn't work on the newest update. I don't remember its name since I had it constantly on on every KDE pc I used. Why is this effect gone? I loved it. I assumed this was a glitch for a week and assumed it'd be patched, but then I checked the desktop effect menu and it was just gone.

STEPS TO REPRODUCE
1. Check Desktop Effects

OBSERVED RESULT
The effect is gone and windows jankily resize.

EXPECTED RESULT
The windows resize properly the nice way they were before.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.24.3
KDE Frameworks Version: 5.91.0
Qt Version:  5.15.3

ADDITIONAL INFORMATION
Comment 1 gregorystarr00 2022-03-18 21:59:24 UTC 
after some digging, they removed it for the wobbly windows effect. An effect which is useless and only for "wow", whereas this effect is not only more performant and necessary for running on certain systems, but also is more aesthetically pleasing than the alternative. What an awful change
Comment 2 Nate Graham 2022-03-26 03:11:37 UTC 
Yes, I'm afraid this was an intentional change. I'm not 100% sure of the reasons but I think I remember hearing that it was incompatible with some performance improvements made to KWin, or something like that. But don't quote me on that; I'm not a KWin developer, just a bug triager (or at least that's the hat I'm hearing right now).

If you were using this effect to work around bad window resize performance, it's probably best if you report that as a bug instead, so the KWin developers can fix it and then you don't have to resort to manual workarounds. :)