How do I render a figure and its shadow on a transparent background?

GeoDude

I would like to render an image using 3Delight in which a figure and its shadow appear while the background remains transparent.  I noticed that this is possible using the Iray engine; however, not all of my materials are optimized for Iray. Is there a way to do what I am trying to do using 3Delight?  If not, is there another method that I am unaware of?

Here is an example of what I'm trying to do using DzFire's Cyborg4.0:

The first image is the figure over a transparent background which I have colored light grey for demonstration purposes.  The second image shows what happens when I create>new primative>plane.  The shadow renders and so does the plane.  Is it possible to render both the figure and the shadow only (without the plane) on a transparent background? 

Thank you.

mjc1016

You need to apply a shadow catcher shader to the plane...there are a couple of free ones on ShareCG.

http://www.sharecg.com/v/56594/browse/7/Material-and-Shader/Shadow-Catcher-with-adjustable-opacity (I use this one all the time and it works well...)

http://www.sharecg.com/v/70391/browse/21/DAZ-Studio/Shadow-Catcher-For-DAZ-Studio-4.5+

GeoDude

Thank you! I used the first one.  That'll do the trick. Thanks again.