Don’t know how many of you have had a chance to play with the render passes, but I for one jumped right in!
I have a question for anyone who has had a tinker:
I thougth that a shadow pass was a render of the shadows only, controlled by an alpha channel for transparency. Thge shadow pass in the CVS builds have colours and geometry in them and no alpha.
I get a shadow only pass normally by setting the casting objects material only to cast shadows, and the receiving objects material to be see-through (with the env button i think), and this produces exactly what I want.
I understand how to multiply the diffuse and shadow passes together to re-build the render, but I don’t know how much use this type of shadow pass (if that’s what it is) would be in compositing live action and CG, which is usually the point of rendering in passes.