https://bugs.kde.org/show_bug.cgi?id=441216
Freya Lupen <penguinflyer2...@gmail.com> changed:
What |Removed |Added
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CC| |penguinflyer2...@gmail.com
--- Comment #12 from Freya Lupen <penguinflyer2...@gmail.com> ---
Looked into this bug (can confirm in 5.1.0 beta 1 and recent master), and
here's my findings:
When moving a brush outline cursor over a reference image with fractional
display scaling,
1-screen-pixel-wide/tall transparent lines appear at the left and bottom edges
of the update rect.
Changing this line in KisOpenGLCanvas2::paintGL()
gc.setClipRect(updateRect);
to this
gc.setClipRect(updateRect.adjusted(-1, 0, 0, 1));
prevents them from appearing. I suspect it's some kind of rounding issue in Qt.
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