[Webkit-unassigned] [Bug 96360] [Qt] New fast/canvas/canvas-lineDash.html introduced in r128116 fails.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Sep 11 06:39:03 PDT 2012


https://bugs.webkit.org/show_bug.cgi?id=96360





--- Comment #2 from Justin Novosad <junov at google.com>  2012-09-11 06:39:27 PST ---
(In reply to comment #1)
> We skipped it on Qt to paint the bot green - https://trac.webkit.org/changeset/128167
> 
> Please unskip it with the proper fix.

These failures are pixel discrepancies in the line dash pattern.  Most probable cause is that GraphicsContext::setLineDash implementation in GraphicsContextQt.cpp does not work as expected.  The failing subtest has to do with a non-zero dash offset.  That is probably what is causing trouble.  I know nothing about drawing with Qt but I suspect the call to QPen::setDashOffset may be the culprit here.  Perhaps an issue with the scale or sign of the offset?

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