https://bugs.kde.org/show_bug.cgi?id=433603
Bug ID: 433603
Summary: Brush strokes are dashed/jagged when very low pressure
is applied to create near 1px width strokes
Product: krita
Version: 4.4.3-beta1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brush engines
Assignee: krita-bugs-n...@kde.org
Reporter: tyson...@tysontan.com
Target Milestone: ---
Krita's pixel brush engine seems to have problem handling very light pressure
strokes. Creating jagged, dash-line-like strokes when a stroke is close to zero
pressure and near 1px width.
Take Basic-5 Size for example. Without changing its default parameters, on my
Cintiq Pro 24, when I apply very light pressure, the stroke will be near 1px in
width. Although usable, the beginning and the end of the stroke usually become
somewhat jagged.
This issue becomes rather prominent when I changed the Autobrush Mask to
Blur/Gaussian and set Fade to 0.00 or 1.00. Under such settings, the beginning
and the end of a stroke becomes literally dash-line-like and very jagged, which
is probably not something a user would expect for a very soft and smooth brush.
I think this is probably caused by our interpolation algorithm. When Fade is
set to 0.01 to 0.99 with Gaussian Mask, this issue mostly went away. Do we take
a closer look at the algorithm, or do we just simply change the range to [0.01,
0.99], so people have no chance to break it?
I reported this issue here on behalf of the community who relayed the message
to me first.
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