[Poppler-bugs] [Bug 14590] New: Clipping to the document size slows down rendering significantly

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=14590

           Summary: Clipping to the document size slows down rendering
                    significantly
           Product: poppler
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: tom at compton.nu


Attached are two copies of the same cairo generated PDF document.

The first one (fast.pdf) takes about 14 seconds to render on my machine (in
evince  2.20.2 using poppler 0.6.2) and the second takes 28 seconds.

The only difference is that second one has a clipping path set that matches the
document borders (this doesn't seem to make any difference to what PDF viewers
display but does affect what SVG viewers display if I render to the SVG backend
which is why I'm doing it).

With larger documents the slowdown seems to get larger - I've seen a jump from
30 seconds to 105 seconds with a larger document.


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