Is there such a thing as opacity / transparency maps in houdini? I can't seem to find them… thanks\
Is there anything where I can make something like this using just maps.. http://3.bp.blogspot.com/_tCUPKiroq2M/SAx90kVqATI/AAAAAAAAAoo/n5h9YEDaUWM/s400/Opacity+rendered.jpg [3.bp.blogspot.com] rather than having to do some procedural modeling thing?