[cairo] turn off antialiasing

[DANIELLLANO]

mental at rydia.net wrote:
> Quoting DANIELLLANO <DANIELLLANO at terra.es>:
> > None, that I know.
> > But, Why would you like to turn antialiasing off?
> 
> High-resolution output.  If your output resolution is high enough,
> things can look worse with antialiasing than without (e.g. due to
> fringing).

Could you give me some references to that?
fringing in computer generated images?

> Also, some applications like SVG renderers may find it desirable to
> turn antialiasing off, as the standard includes means for
> requesting this on a per-object basis.

Why would you like to turn antialiasing off on some objects?
I don't like that part of the SVG standard.