[Poppler-bugs] [Bug 12185] New: Poppler does not correctly handle knockout groups

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=12185

           Summary: Poppler does not correctly handle knockout groups
           Product: poppler
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: cairo backend
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: cworth at cworth.org
OtherBugsDependingO 12143
             nThis:


Current work within cairo uses knockout groups to render fine-grained
image-based fallbacks for cairo operations that are not directly
supported by PDF.

When rendering these cairo files with poppler, it's clear that the
knockout groups are not being handled correctly.

I'll attach some simple examples to show the problem.

-Carl


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