[OS X TeX] (OT?) TeX and MacOSX (or what we should pretend from OSX applications).
bvoisin at mac.com
Fri Dec 3 08:13:05 EST 2004
Le 3 déc. 04, à 11:27, Massimiliano Gubinelli a écrit :
> Currently available native DVI viewers draw fonts on screen bypassing
> the operating system which is again a wast of money. Quartz (the
> graphics engine of OSX) is optimized for the hardware and to use the
> vector unit inside any G4 or G5 processors. As so it should be the
> natural candidate to implement output rendering.
This is the way how XeTeX works (its extended-DVI to PDF converter
xdv2pdf, actually) but that currently comes at a price in terms of
speed, precisely. For example, a document of mine, containing several
relatively large images (JPEG files), compiles in, say, 15 seconds in
pdfTeX and more than a minute in XeTeX.
I've got a 17" PowerBook, with graphic card having 64 Mb of RAM.
Generally, when I compile in XeTeX I can hear the fan functioning,
whereas with pdfTeX it mostly keeps quiet. So yes, leaving the
resource-consuming tasks to Quartz would seem like the logical thing to
do, but one has to be ready for the demands this may set in terms of
resources; like going for the highest-RAM graphic card, etc.
In any case, from user experience I'm not sure about the real
optimization inside Quartz: compare for example the relative speeds of
converting a PS file to PDF using Ghostscript's /usr/local/bin/ps2pdf
(used for example by TeXShop) and OS X's /usr/bin/pstopdf (used for
example by Preview.app).
Please don't misunderstand me: I'm not against this philosophy at all,
I'm indeed a fan of XeTeX and all for using as much elements of the OS
as possible instead of external additions. But I think this means
currently slower and less compatible output, not the other way round.
I'm willing to pay this price (I wouldn't be using a Mac instead of a
PC otherwise), but other people may not.
> The best way would be to force pdflatex not to embed fonts (so output
> is smaller, no font subsetting is necessary and fonts can be loaded
> once for all in the viewer).
But then forget about the ability to collaborate with people, to send
PDF files to them, to submit papers electronically. (Exactly what Peter
Dyballa just wrote, I realize.) Doing that would, I think, just
alianate the whole academic community to TeX, and this is precisely
where it comes from.
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