Re: [AUCTeX] dvipng is not called by auctex

[Faheem Mitha]

On Thu, 4 Jul 2013, David Kastrup wrote:

> Faheem Mitha <address@hidden> writes:

> > Looking at the compilation output, I see that the creation of the
> > preview png snippets seems to be done by ghostscript. It looks like
> > a pdf file is first created by TeX and then pdf2dsc is used to
> > create a dsc file from that pdf.

> The dsc file is not doing much: basically it fakes a PostScript page
> directory for the PDF file that then can be processed as if it had
> been PostScript to start with.

I see.

> > I'm not clear what gs uses to create the final png.

> Its png16m backend.

Ok.

> > In any case, in terms of speed, is this the best possible option?

> Nowadays, it's conceivable that pdftocairo might be faster, but it
> would not seem possible to do the kind of demand-based rendering
> that the Ghostscript interactive interface does, not with a single
> process.  If you are daring, you might want to try writing a backend
> for that.  At the time preview-latex was actively developed, there
> was no reasonable PDF->png converter available apart from
> Ghostscript.

I see. The current preview setup is fine. Thanks very much for the 
explanation, and for preview-latex.

                                                   Regards, Faheem