Bug 362533 - Tremulous lines when drawing with pencil (hidpi related?)
Summary: Tremulous lines when drawing with pencil (hidpi related?)
Status: RESOLVED WAITINGFORINFO
Alias: None
Product: krita
Classification: Applications
Component: Brush engines (show other bugs)
Version: 3.0 Beta
Platform: Kubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: Krita Bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-05-01 10:14 UTC by Ilya V. Portnov
Modified: 2018-08-10 13:02 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
Fuzzy lines 1 (basic smoothing enabled) (600.21 KB, image/png)
2016-05-01 10:15 UTC, Ilya V. Portnov 		Details
Fuzzy lines 2 (smoothing disabled) (427.20 KB, image/png)
2016-05-01 10:15 UTC, Ilya V. Portnov 		Details
A better situation (krita from git master, debian unstable, 1920x1800 display) (361.20 KB, image/png)
2016-05-01 10:17 UTC, Ilya V. Portnov 		Details
Another better situation (kubuntu 16.04, 1366x768 laptop) (189.27 KB, image/png)
2016-05-01 10:29 UTC, Ilya V. Portnov 		Details
Tablet log while drawing fuzzy lines (kubuntu, hidpi laptop) (772.02 KB, text/x-log)
2016-05-01 11:37 UTC, Ilya V. Portnov 		Details
Tablet log from lowdpi laptop (kubuntu, 1366x768) (1.46 MB, text/x-log)
2016-05-01 11:42 UTC, Ilya V. Portnov 		Details
Tablet log from lowdpi desktop (debian unstable, git master, 1920x1280) (1.56 MB, text/x-log)
2016-05-01 11:44 UTC, Ilya V. Portnov 		Details
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Description Ilya V. Portnov 2016-05-01 10:14:35 UTC 
If I draw many straight lines in a row with thin pencil brush, they are a bit tremolous.
Reproduces on krita3-testing from lime ppa and latest appimage.
This is a laptop with 2880x1620.

Reproducible: Always
Comment 1 Ilya V. Portnov 2016-05-01 10:15:11 UTC 
Created attachment 98722 [details]
Fuzzy lines 1 (basic smoothing enabled)
Comment 2 Ilya V. Portnov 2016-05-01 10:15:48 UTC 
Created attachment 98723 [details]
Fuzzy lines 2 (smoothing disabled)
Comment 3 Ilya V. Portnov 2016-05-01 10:17:08 UTC 
Created attachment 98724 [details]
A better situation (krita from git master, debian unstable, 1920x1800 display)
Comment 4 Ilya V. Portnov 2016-05-01 10:29:13 UTC 
Created attachment 98725 [details]
Another better situation (kubuntu 16.04, 1366x768 laptop)
Comment 5 Ilya V. Portnov 2016-05-01 11:37:52 UTC 
Created attachment 98727 [details]
Tablet log while drawing fuzzy lines (kubuntu, hidpi laptop)
Comment 6 Ilya V. Portnov 2016-05-01 11:42:19 UTC 
Created attachment 98728 [details]
Tablet log from lowdpi laptop (kubuntu, 1366x768)
Comment 7 Ilya V. Portnov 2016-05-01 11:44:55 UTC 
Created attachment 98729 [details]
Tablet log from lowdpi desktop (debian unstable, git master, 1920x1280)
Comment 8 eliotJ 2016-05-15 22:44:53 UTC 
Hi

Does it's also exists in Krita v2.9.11 or does it's a regression in v3.0 ?
Comment 9 Alvin Wong 2017-09-23 08:10:11 UTC 
Hi, is this still present on 3.2.1 or 3.3.0-rc.1?

I doubt this is related to hidpi, could be tablet or driver. Were you testing on all the systems with the same tablet and driver?
Comment 10 Halla Rempt 2017-09-28 14:40:37 UTC 
Needinfo
Comment 11 Raghavendra kamath 2018-08-10 04:57:19 UTC 
Hi  Ilya

Can you please check if this is still reproducible in the latest version of Krita,

for now I am going to close this bug report due to lack of activity and reply, if you think this bug is still present in the latest version of krita , please feel free to re-open this bug report

thank you
Comment 12 Ilya V. Portnov 2018-08-10 13:02:25 UTC 
Hello. 
Unfortunately, currently I do not have access to that HiDPI laptop to check. I'll write here if any news.