Need for BFC INVERTNEXT / primitives?

[Philippe Hurbain]

About CCW/CW/Invertnext/double sided poly: for all i can see, this is completely superfluous. No other file format i know (and i know some), has things like this. This is not a big issue, but again is an arbitrary and useless thing we have on top, it's a mix of legacy and solutions from a time where saving a single triangle was a big gain. Now video card can pump out gazillion triangles with ease. Just stick with a direction, and convert the library.

What do you propose for BFC? It wouldn't be a big deal to convert all library to one or the other orientation, but what about 3D primitives turned inside out? Remove completely the notion of primitive (why not...)? Provide two sets of primitives, one seen from inside, the other from outside?