[cairo] Best strategy for complex screen drawing

[Bill Spitzak]

MenTaLguY wrote:

> Antialiasing may be the wrong way to think of it.  Perhaps, rather than
> thinking of it as "aliased_lineto", it should be "abutting_lineto" or
> similar?  If it's not required that the de-seaming be accomplished via
> turning off antialiasing, it opens up opportunities for backends to take
> different approaches when they are available.

That is a good idea, to make it clear what it's purpose is.