Hi Paul,
the material I'm using has as Projection an OSL. If I use it on block instances, it works great. But if I explode the blocks, I lose the differents ID (this I didn't understand very good). Now I would like to replicate the result of the instances on different objects (not instances). Beppe Gullotta suggests me to using the Geometry TAB to set these different ID, but he is not a Rhino expert so he suggests me to try. I've tried giving different render layer numbers and differents baking group numbers to each object but nothing happens.
Do you have some idea of how give these differents ID? What are Instances ID and in what they are different from the single Object ID in Rhino?
Thanks again,
Roy