https://bugs.kde.org/show_bug.cgi?id=363621
Bug ID: 363621
Summary: Krita 3.0 is slower than 2.8
Product: krita
Version: 3.0 Release Candidate
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: OpenGL Canvas
Assignee: krita-bugs-n...@kde.org
Reporter: sun...@hotmail.ru
Hi, i was testing 3.0 version from official appimage you provided. Comparing to
2.8 from Kubutnu 14.04 repositories its alot slower. The settings are the same.
It doesn't matter if OpenGL enabled/disabled, on 2.8 everything is fast on 3.0
everthying is slow, i can clearly see how line is drawing way after i made a
stroke.
Also it crashes when enabling/disabling OpenGL. Maybe it crashes elsewhere as
well.
I am using Radeon HD5770 GPU with the latest OSS drivers available from
official repositories.
Reproducible: Always
Steps to Reproduce:
0. If you have powerful GPU then choose the size of canvas where its on a
border of good and bad performance for 2.8 version and use the same settings
for 3.0
1. Open Krita and choose "Basic block" brush, you can use any other brush that
is not as simple as the default one
2. Make a fast stroke from(for example) left upper corner to right lower one
3. See how it draws that line when your mouse stopped
Actual Results:
Slowly draws a line after some time i've made a stroke.
Expected Results:
Instantly drawing the line following my mouse movements, like in 2.8 version.
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