[gs-bugs] [Bug 689722] extreme slow rendering of PDF with patterns

bugs.ghostscript.com-bugzilla-daemon at ghostscript.com bugs.ghostscript.com-bugzilla-daemon at ghostscript.com
Thu Apr 24 23:08:09 PDT 2008


http://bugs.ghostscript.com/show_bug.cgi?id=689722

leonardo at artifex.com changed:

           What    |Removed                     |Added
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         AssignedTo|leonardo at artifex.com        |alex.cherepanov at artifex.com



------- Additional Comments From leonardo at artifex.com  2008-04-24 23:08 -------
I observe a PDF interpreter problem, which needs to be fixed first. When I run :

gswin32.exe -r72 -dNOPAUSE -dBATCH -sDEVICE=ppmraw -sOutputFile=cur.ppm 
attachment.pdf

I see (using C debugger) that zbuildpattern1 is called hundreds times and the 
garbager starts too frequently. Since the PDF file contains only 6 patterns, I 
conclude that each one is being instantiated multiple times. Need to implement 
a pattern cacxhe in the PDF interpreter. Passing to Alex who owns the PDF 
interpreter.



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