Sometimes we need to render images that include shadows without objects to cast them on. In multi-pass rendering for example, where we may have a background and would like to render a figure separately, the figure’s shadows can only be cast if the background is rendered at the same time.
It’s easy to do by creating a plane primitive, have our character walk on that, and turn it transparent. However, if an object is transparent, then no shadows are cast upon it. So how do we solve this conniving conundrum?
With DAZ Studio’s Shadow Catcher function of course! Shadow Catcher is a node (or brick) in Shader Mixer, which will let us do just that: render shadows without the plane underneath it. Let’s see how we can set this up.