[gs-bugs] [Bug 692303] Artifacts in simple artwork when using a TIFF device

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Sun Jun 26 18:15:34 UTC 2011


--- Comment #5 from Ken Sharp <ken.sharp at artifex.com> 2011-06-26 18:15:33 UTC ---
(In reply to comment #4)
> A simple vector flower (PDF attached) is getting rasterized with unusual
> artifacts when using TIFFSEP or TIFF32NC.  The output looks perfect when
> PNGALPHA is used.
> gs -dBATCH -dSAFER -dNOPAUSE -sDEVICE=tiffsep -r72 -dGraphicsAlphaBits=4
> -dTextAlphaBits=4 -sOutputFile=simple NoPaper.ai

The bug report is against Windows, yet this is a Linux command line. The
supplied file is a PDF, but the command line uses an Adobe Illustrator file.

Removing the -dGrpahicsAlphaBits causes the problem to go away, but I do see
the described problem on Windows when that switch is present. Hard to see wy,
since its a simple fill. One for Robin perhaps ?

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