[gs-bugs] [Bug 691305] Touched areas not rendered properly

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Fri May 14 13:46:45 UTC 2010


--- Comment #2 from Ken Sharp <ken.sharp at artifex.com> 2010-05-14 13:46:43 UTC ---
(In reply to comment #0)
> When postscript file contains more areas which touches on edges the vectors are
> not properly rendered. 
> The attached zip file contains:
> test.eps - input postscript file
> test_output.png - output file generated by Ghostscript
> test_vectors_preview.png - emphasized vectors in input file
> test_output_descr.png - emphasized problems in output file (semi-transparent
> lines on areas edges)

Its not at all clear to me what you think the problem is here. The PNG files
you have sent do not match the output I get from Ghostscript, using the Windows
display, but then you haven't supplied a command line, so its possible there is
some difference in our setup.

The 'emphasized problems' file (test_output)descr.png) contains a bunch of red
lines which don't seem to be present in the Ghostscript output, I don't
understand what these are meant to convey.

Likewise the 'emphasized vectors' file (test_vectors_preview.png) contains a
bunch of blue lines which are not present in the Ghostscript output.

There does not appear to be any correspondence between the red and blue lines,
or any artefact in the Ghostscript PNG you have sent.

When converted to PDF using Adobe Distiller and viewed in Acrobat the output
seems the same as Ghostscript.

Please supply a sample command line, and if possible explain what you see as
the actual problem 'not properly rendered' is rather vague. Please try and
explain what you see that should not be there, or what you expect to see on the
output which is not present.

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