[cairo-bugs] [Bug 26191] New: Regression when viewing PDFs with Type 3 bitmap fonts

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Jan 24 03:46:15 PST 2010


           Summary: Regression when viewing PDFs with Type 3 bitmap fonts
           Product: cairo
           Version: 1.9.5
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
        AssignedTo: cworth at cworth.org
        ReportedBy: ajohnson at redneon.com
         QAContact: cairo-bugs at cairographics.org
            Blocks: 24384

Created an attachment (id=32790)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32790)
Test document

With cairo master viewing PDFs with poppler that contain Type 3 bitmap fonts
shows gray boxes instead of the glyphs. git bisect shows the regression to be
caused by:

commit 558f9501700ba569f04f345f7c64d16b1870e37c
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Mon Jan 18 22:47:34 2010 +0000

    surface-wrapper: Avoid copying patterns and clips unless transformed.

    An older variant of the fixes for moving the device transformation out
    of the surface layer, but languished in a side branch. The only benefit
    of this patch is that it avoids the copy where possible.

PDF test case attached.

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