Question about XRender specification

Carl Worth cworth at
Tue Apr 8 18:13:26 PDT 2008

On Wed, 9 Apr 2008 00:15:40 +0200, "Clemens Eisserer" wrote:
> I am not sure if I understand that parameter correctly, does it
> specify the depth of the intermediate mask which is generated for
> composition?

Yes, that's exactly what it does. That parameter exists so that you
can get antialiasing or not as you want, (with either A8 or A1).

> >  PS. Ouch, it sure is painful to write programs that draw with Xrender
> >  directly. I'm glad that I've got cairo to take care of these details
> >  for me.
> Well, from another POV its quite interesting to learn whats behind Cairo ;)

Oh sure, if you're doing this for education's sake, then it can be
great fun.


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