@valerostudio said:
It seems that Maxwell already does something similar using Pixar subdivision.
Yea - I just noticed they appear to have OpenSubdiv support. (Which is what I'm working on right now - replacing my own subdivision engine with the industry standard.)
But yea, as Thomas mentions - we've been talking to some render engines in trying to find a generic way for extensions to be able to provide high-poly replacements for objects in a SketchUp model. A generic system that would allow any extension to declare itself as a proxy provider and then have render engines consume the result without needing to know anything about the other extension.