Bug 457842

Summary:	Changing zoom levels is sluggish and buggy when liquify is triggered on a large layer
Product:	[Applications] krita	Reporter:	acc4commissions
Component:	Tools/Transform	Assignee:	Krita Bugs <krita-bugs-null>
Status:	REPORTED ---
Severity:	minor	CC:	halla
Priority:	NOR	Keywords:	triaged
Version First Reported In:	nightly build (please specify the git hash!)
Target Milestone:	---
Platform:	Compiled Sources
OS:	All
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description acc4commissions 2022-08-13 14:52:46 UTC

SUMMARY
git 716923c

The title says it all. 
- Moving the canvas with Pan Tool is fine and fast. 
- Everything is fine when other transform methods are triggered.

STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 Halla Rempt 2022-08-13 15:15:52 UTC

Yes, liquify is an expensive operation. Operations like that are handled in a background thread, but they still take CPU power, so the gui thread has less power available. I don't think we should spend a lot of time on this?

Comment 2 acc4commissions 2022-08-13 15:26:02 UTC

(In reply to Halla Rempt from comment #1)
> Yes, liquify is an expensive operation. Operations like that are handled in
> a background thread, but they still take CPU power, so the gui thread has
> less power available. I don't think we should spend a lot of time on this?

Up to you guys. I have no big problem with this issue either. I just felt I needed to report.