Hi Markus,
Quoting Markus Demleitner (2019-09-24 11:36:09)
> ps2pdf14 as delivered in buster will only produce PDF transparency
> when run with -dNOSAFER. This deviates from previous releases (I'm
> quite sure about jessie), when transparency was produced without
> further configuration. Although I *might* see some relationship to
> accepting pdfmarks, the connection between SAFER and transparent
> colours frankly strikes me as just a little non-intuitive (but that
> may be because I don't know what's going on when producing
> transparency in PDFs).
>
> Because of this, I'd suggest that if turning off PDF transparency
> without -dNOSAFER is intentional, that should be documented in the
> NEWS, even more so as I couldn't make out that fact in the upstream
> Use.htm that the current 9.28~~rc1~dfsg-1 NEWS item refers to.
> Perhaps that particular item could be amended with saying something
> like "Note that that has some rather unexpected consequences (e.g.,
> PDF transparency is now lost without -dNOSAFER)."
>
> Here's my minimal working example:
>
> With the LaTeX document
>
> \documentclass{article}
> \usepackage{pstricks}
> \begin{document}
>
> \psframebox*[linecolor=white,fillcolor=red,fillstyle=solid,
> opacity=0.85,framesep=4mm]{abc}
> \vskip -9mm
> \psframebox*[fillcolor=white, opacity=0.5,strokeopacity=0.5,
> fillstyle=solid,framesep=4mm,linewidth=3pt,linecolor=black]{abc}
>
> \end{document}
>
> in a.tex, run
>
> latex a;dvips a;ps2pdf a.ps
>
> and the second white box obscures most of the red box in the background
> (i.e., pstricks opacity is ignored). Run
>
> latex a;dvips a;ps2pdf -dNOSAFER a.ps
>
> and the two boxes blend as expected.
Thanks for reporting this issue.
Above minimal code is processed by LaTeX, not Ghostscript directly.
Please provide a (minimal, preferrably) example of date and commands
directly involving Ghostscript.
- Jonas
--
* Jonas Smedegaard - idealist & Internet-arkitekt
* Tlf.: +45 40843136 Website: http://dr.jones.dk/
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