Peter Dyballa wrote:

Am 05.06.2011 um 21:24 schrieb Philip TAYLOR (Webmaster, Ret'd):

So how is it, I am forced to ask, that an add-on package can achieve something that the underlying
engine cannot ?  This seems very odd to me.

The fontspec package does not use PDF specials which TiKZ/PGF uses. That's my simply explanation. It has built-in transparency support which is built-in into Mac OS X. Xdvipdfmx does not use this (yet).

Yes, but I'm not using the fontspec package.  I am using the raw \font
primitive provided by XeTeX.  Now if TikZ/PGF can achieve transparency
using the XeTeX engine with xdvipdfmx, then the underlying engine must
be able to do the same thing.  So why doesn't it ?!

** Phil.


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