[Poppler-bugs] [Bug 44002] New: Rendering of the document only works for certain sizes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=44002

             Bug #: 44002
           Summary: Rendering of the document only works for certain sizes
    Classification: Unclassified
           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: benjamin at sipsolutions.net


Created attachment 54628
  --> https://bugs.freedesktop.org/attachment.cgi?id=54628
PDF file in question

OK, this is a weird bug, and I am kind of stuck trying to even figure out where
it is (cairo/pixman/poppler).

What happens is, that the attached PDF file will only render at certain
zoom/dpi values. You can see this in evince happening, when you open it and
zoom in to 400% the image will disappear. What you do not see there is, that
the images will appear again if you render it at an even larger scale of eg.
900dpi.

I am attaching the PDF in question, and a small script that I have been using
to convert the PDF to TIFF images. (change the DPI in the script to eg. 100 or
900 to see the image appear).

The easiest workaround seems to be to use pdftoppm instead of trying to render
the PNG myself. This seems to work around it by not using the cairo backend.

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