Bug 441204

Summary:	Transform tool is very slow
Product:	[Applications] krita	Reporter:	HPetrus <haigpetrus>
Component:	Tools/Transform	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	halla
Priority:	NOR
Version First Reported In:	5.0.0-beta1
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description HPetrus 2021-08-19 23:56:10 UTC

SUMMARY
Transforming any selection using the transform tool, no matter how small, is very, very slow compared to 4.4.x.

STEPS TO REPRODUCE
1. Create a layer and draw on it
2. Select a portion of the drawing from that layer
3. With transform tool, move, rotate, scale as you see fit; feedback will be very laggy to update

OBSERVED RESULT

Feedback is laggy from a couple of seconds to somewhat longer, no matter how small the selected raster object.

EXPECTED RESULT

Quick feedback, like in 4.4.x

SOFTWARE/OS VERSIONS
Krita

 Version: 5.0.0-beta1
 Languages: en_CA, en
 Hidpi: true

Qt

  Version (compiled): 5.12.11
  Version (loaded): 5.12.11

OS Information

  Build ABI: x86_64-little_endian-lp64
  Build CPU: x86_64
  CPU: x86_64
  Kernel Type: linux
  Kernel Version: 5.13.10-arch1-1
  Pretty Productname: Arch Linux
  Product Type: arch
  Product Version: unknown
  Desktop: KDE

ADDITIONAL INFORMATION

Comment 1 Halla Rempt 2021-08-21 10:11:15 UTC

If you want Krita 4 behaviour back, you can go to settings->configure Krita->performance->Instant Preview and uncheck Use In-Stack Preview of transform tool.