[cairo-bugs] [Bug 25167] New: Fails to paint some paths with CAIRO_ANTIALIAS_NONE

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25167

           Summary: Fails to paint some paths with CAIRO_ANTIALIAS_NONE
           Product: cairo
           Version: 1.9.2
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: xlib backend
        AssignedTo: cworth at cworth.org
        ReportedBy: gustavo.noronha at collabora.co.uk
         QAContact: cairo-bugs at cairographics.org


Created an attachment (id=31296)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31296)
test case

I noticed this while investigating WebKitGTK+'s failure to draw some box
outlines. When WebKit tries to draw a 4-points polygon with code similar to the
one I'm attaching as test case nothing gets painted. If I comment out the line
that sets the antialias type to NONE the outline does get painted. I tried
using the image backend to be sure, and it worked when generating a png, which
is why I'm filling this under the xlib backend component.


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