[Poppler-bugs] [Bug 12144] New: Poppler doesn't correctly handle gradients with transparency

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=12144

           Summary: Poppler doesn't correctly handle gradients with
                    transparency
           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:


As discussed in bug #12143 we're trying to do a better job of ensuring
that poppler bugs detected by the cairo test suite get reported to
poppler.

At the current point, there are already 4 PDF tests that are disabled
in the cairo test suite. They are:

        gradient-alpha, linear-gradient, text-pattern, trap-clip

I believe that all of these tests were disabled due to a single bug in
poppler having to do with transparency in gradients. But I don't have
much more detail at the moment.

I can attach some images here if desired, or someone can generate them
by re-enabling the tests in cairo's test suite, (edit the
pdf_ignored_tests list in cairo/boilerplate/cairo-boilerplate-pdf.c
and then run "make test").

Sorry for the vague report---I just wanted to ensure this issue didn't
go on forgotten.

-Carl


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