Bug 352412

Summary:	Rotate and scale image randomly become very sluggish
Product:	[Applications] krita	Reporter:	Matt <reuphonium>
Component:	General	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED FIXED
Severity:	grave	CC:	griffinvalley, halla
Priority:	NOR
Version:	2.9.7
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed In:

Description Matt 2015-09-08 00:19:50 UTC

Despite working fine a few days ago, rotating and zooming in and out is now incredibly slow and stuttery. This happened once before when I was using windows 8.1, it was solved by installing the latest beta version and hasn't been a problem until now. Currently I'm using windows 10 and the problem popped up again, installing a new version didn't help. It is sometimes less severe when I zoom far out, but otherwise it makes it more or less impossible to use krita.

I've tried reinstalling, restarting my computer and installing new graphics card drivers. 

Thanks

Reproducible: Always

Steps to Reproduce:
1.Open a new canvas of any size
2.rotate or zoom
3.

Actual Results:  
as described

Expected Results:  
run smoothly

Windows 10 64bit
intel i5 4570 3.2GHz 3201Mhz, 4 core
Nvidia GTX 770 2gb ram
8 gigs of ram
Asus motherboard

Comment 1 wolthera 2015-09-10 12:06:06 UTC

check the ogl settings under:

settings->configure Krita->display.

If OpenGL is turned off, turn it on again, and if it's on, set the filtering to trilinear instead of high quality.

Comment 2 Halla Rempt 2015-09-12 08:47:23 UTC

It might be a windows 10/opengl problem. Could you please check Wolthera's suggestions and tell us if that made a difference?

Comment 3 Matt 2015-09-15 04:09:05 UTC

Turning on openGL worked perfectly, totally back to normal! Thanks so much!