Bug 384060

Summary:	Open GL causes brush strokes to be laggy and jerky
Product:	[Applications] krita	Reporter:	Cristina <thesilverdoe21>
Component:	OpenGL Canvas	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	alvin, griffinvalley, halla, thesilverdoe21
Priority:	NOR
Version:	3.0.1
Target Milestone:	---
Platform:	Other
OS:	macOS
Latest Commit:		Version Fixed In:

Description Cristina 2017-08-26 22:02:18 UTC

I found that with no previous problems, my brush strokes began acting up and acting jerky and laggy. I tried researching the problem, but to no avail. Many forums mentioned turning on Open GL, which I checked, and noticed that I did have on. Just to check, I turned it off and then tested the strokes. The jerkiness stopped, but the brush is now slow and has the problems mentioned when Open GL was off. I turned on Open GL again in an attempt to resolve the issue but then was back to the original problem. I would liken it to video game lag. This is very frustrating as I have a project to finish this weekend and I am not able to use krita, my preferred program, to finish it.

Comment 1 wolthera 2017-08-26 22:57:43 UTC

Hm... which version of Linux are you using? And could you also tell us which graphics card and driver you are running?

Also, can I tempt you to check if the same issue still happens when using the 3.2.1 appimage?

https://krita.org/en/item/krita-3-2-1-released/

And if you're not familiar with appimages a quick guide:

http://www.davidrevoy.com/article322/krita-appimage-for-cats

It'd help a lot to see if it is not a bug we might have fixed past year.

Comment 2 Halla Rempt 2017-09-19 13:18:24 UTC

Hi Cristina,

Without more information, we cannot help you. Are you really using Linux, or another Operating System? What GPU do you have? And 3.0.1 is very old, please update to the latest release and try again.

Comment 3 Cristina 2017-09-20 02:07:11 UTC

(In reply to wolthera from comment #1)
> Hm... which version of Linux are you using? And could you also tell us which
> graphics card and driver you are running?
> 
> Also, can I tempt you to check if the same issue still happens when using
> the 3.2.1 appimage?
> 
> https://krita.org/en/item/krita-3-2-1-released/
> 
> And if you're not familiar with appimages a quick guide:
> 
> http://www.davidrevoy.com/article322/krita-appimage-for-cats
> 
> It'd help a lot to see if it is not a bug we might have fixed past year.

Comment 4 Alvin Wong 2017-09-20 03:04:28 UTC

Seems to be a duplicate of bug 373676

*** This bug has been marked as a duplicate of bug 373676 ***