https://bugs.kde.org/show_bug.cgi?id=412309
Bug ID: 412309
Summary: Quick Brush Engine: painting doesn't match outline
Product: krita
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brush engines
Assignee: krita-bugs-n...@kde.org
Reporter: l...@aspect-design.de
Target Milestone: ---
Created attachment 122855
--> https://bugs.kde.org/attachment.cgi?id=122855&action=edit
Screenshots showing the issue
SUMMARY
The actual area that the Quick Brush Engine (using "b)_Basic-1" brush Preset)
doesn't match the cursor outline. It seems the size is one pixel larger then it
should be, going out of the previewed outline on the right and bottom.
This makes it harder to draw and especially erase precisely with this brush
because the center of brush and outline don't match.
STEPS TO REPRODUCE
1. Choose "b)_Basic-1" brush preset at some smaller size (like between 5-10px)
2. Zoom into the canvas a bit (200-400%) to better see the issue
3. Make sure your mouse doesn't move and click somewhere on the canvase
OBSERVED RESULT
When you compare the cursor outline with painted dot, they don't match
properly, the dot seems to go 1 pixel outside to the left and bottom. It
becomes more apparent when painting over with a different round brush like
Basic-2_Opacity (see attachment)
EXPECTED RESULT
Painted area should touch the cursor outline equally on all sides.
ADDITIONAL INFORMATION
Master branch at f5dd77bf83aebe7eeb34a1fc17547f9df167df8d
Qt Version: 5.12.5
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