[gs-bugs] [Bug 692285] phase shift in dot pattern -- very long image

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Fri Jun 17 14:48:19 UTC 2011


http://bugs.ghostscript.com/show_bug.cgi?id=692285

--- Comment #3 from Robin Watts <robin.watts at artifex.com> 2011-06-17 14:48:17 UTC ---
Created an attachment (id=7601)
 --> (http://bugs.ghostscript.com/attachment.cgi?id=7601)
dots2.pdf

Even simpler file.

 gswin32c.exe -dMaxBitmap=10000 -r180 -sDEVICE=png16m -o dots.png dots2.pdf

produces a png file of 354x35433 in size, mostly blank. Scroll down to the
bottom in your favourite viewer that can cope (I use ImageMagick Display), and
you'll see a discontinuity across the small region of the rectangle that is
still filled.

This corresponds (I believe) to the join between bands 10 and 11.

Going to step through the clist code now to see if I can understand where the
error is coming from.

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