sorry to nit pick but... in the hair case we don't deal with triangles anymore. if you are using arnold, you are raytracing directly the curve.
On Tue, May 20, 2014 at 5:48 PM, Matt Lind <ml...@carbinestudios.com> wrote: > > > With hair, the DCC will often display guide hairs as curves, or some other > manipulator for the user to interact with. The data structure to link all > the parts will be much more complex than the renderer’s data structure > which is only slightly more complex than a bucket of triangle strips. > However, the amount of memory required to store the hair information in the > DCC is significantly less as only curve control points, positions of the > guides and some other meta data need be stored. That’s not much physical > data. The renderer, on the other hand, must expand all that data into raw > triangle strips, or whatever it chooses to draw the hairs. It takes a lot > more memory to store the vertex and edge connection data for dense triangle > strips for millions of hairs than it does to store the controls points and > other basic data for guide hairs in a DCC to represent the same information. > > >
