Spoke too soon. Found this link in case anyone else runs into a similar need. http://area.autodesk.com/forum/autodesk-softimage/rendering/caustic-pass/
On Wed, Oct 17, 2012 at 9:54 PM, Byron Nash <[email protected]> wrote: > Is there a way I can just render out the caustics on a surface and not the > light? I have been trying some things with the visibility and Ray_Type > switch but can't get it to work. It seems like there would be a way to get > a pass like this out.
