[cairo] Backend using subdivisional surfaces?

[Stuart Axon]

Hi,
  I filed bug #17733 asking for a blender uni-verse backend.  I've been looking at verse a bit more and it's base primitive is subdivisional surfaces.  
Forgetting about the verse part for a moment; how difficult would it be to make a backend that rendered to subdivisional surfaces?
Are there any artefacts that could occur in such a conversion?

Cheers,
Stu