https://bugs.kde.org/show_bug.cgi?id=430380
Bug ID: 430380
Summary: MyPaint brushes paint transparency as white when using
color smudge.
Product: krita
Version: 4.4.2-beta1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brush engines
Assignee: krita-bugs-n...@kde.org
Reporter: griffinval...@gmail.com
Target Milestone: ---
SUMMARY
This is likely caused by some weird bit of maths somewhere (mypaint, is afaik,
premultiplied). I thought I had caused this by switching the engine to use the
precise paint device wrapper, but it also happens on high bit depths.
STEPS TO REPRODUCE
1. Select a mypaint brush with smudge+color activated.
2. Have a sketch or piece of lineart, where the lines are semi transparent.
3. Draw over the lines.
OBSERVED RESULT
The painted color is somehow brightened.
EXPECTED RESULT
The painted color is mixed with transparency appropriately.
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