[cairo-bugs] [Bug 39675] New: [bisected] polygon clipper (?) bug

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jul 29 11:42:57 PDT 2011


           Summary: [bisected] polygon clipper (?) bug
           Product: cairo
           Version: 1.10.3
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: xcb backend
        AssignedTo: psychon at znc.in
        ReportedBy: ojab at ojab.ru
         QAContact: cairo-bugs at cairographics.org

After commit

commit 6b3e5cd39c81941a73ed709eadf8beae5407dc05
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Wed Jul 20 14:32:10 2011 +0100

    xcb: Reduce one pass for masking, now just 2 passes required!

    Another 10% off fishbowl for both snb and pnv.

    [Note this exposes the bugs in the polygon clipper; naive *and* broken.]

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

I have next (still invisible) line from the bottom on the top of webpage in
firefox (please chec the attached screenshot). It appears during scrolling and
goes away after redraw. For example, it can be easily  reproduced on page

Sorry for ambiguous summary.

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