I'm using Maya 2010, and I'm having trouble with the Shadow pass. I'm doing tests with simple poly objects and a room with one light. Through a forum post, I learned that if i I give the room a "Use Background (turn off reflections)" Material, and simply turn off the "Primary Visibility" of the poly objects, only the Shadows would render. I tried it, and it worked, simple as that.
However, that meant that i had to select each poly object one by one, and turn each of its Primary Visibility properties off.
Correct me if I'm wrong, but both the room and the poly objects must be in the same render layer. So here's the question. Is it possible to separate the poly objects and the room into separate groups (partitions), and give each group a different override? If not, what are my other options?
In XSI, I would separate the objects into different partitions, and each partition would have it's own overrides and properties.
Anyway, help would be greatly appreciated.