PixarAnimationStudios/OpenSubdiv — pull request #299 by Nazg-Gul (2014-05-10 17:41:01+00:00)
Title: Implement C-API accessor to evaluator topology

This way external application might check whether it need to
re-create evaluator from scratch or it might re-use existing
one without storing extra data from it's side.

TODO: Tags are still not accessible via C-API, it's marked as
to be solved later when it becomes more clear what is the best
way to expose them and when there'll be a real application to
test the tags.