[cairo-bugs] [Bug 54657] New: commit 0bfd2ac causes great rendering problem is some programs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=54657

             Bug #: 54657
           Summary: commit 0bfd2ac causes great rendering problem is some
                    programs
    Classification: Unclassified
           Product: cairo
           Version: 1.12.2
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: general
        AssignedTo: cworth at cworth.org
        ReportedBy: yyc1992 at gmail.com
         QAContact: cairo-bugs at cairographics.org


After upgrading to cairo-git on archlinux, all gtk2 popup window/menu/tooltips
have this kind of effect[1] (Notice that the random stuff around the menu
should actually be drop shadow). This happens when I am using QtCurve Theme and
also causes another program that uses pango not able to display it's window.

After compiling different commit of cairo-git I track down the single commit
that causes the problem is this one.

0bfd2ac... xlib: Implement SHM fallbacks and fast upload paths 

I haven't tried to revert this single commit on git master but any commit
before this one doesn't have the problem.

[1]http://i.imgur.com/3072e.png

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