Thread: Render Layers
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# 6 15-11-2003 , 08:01 AM
ragecgi's Avatar
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Join Date: Sep 2002
Location: Minnesota, USA
Posts: 3,709
Just fyi from the docs:

Note:
No mask or alpha channel is produced for the Specular Pass, so we recommend additively compositing a specular pass.

Custom shadow and reflection passes
You can also create custom shadow and reflection passes with the useBackground material which catches shadow and/or reflections.
When the shadow pass is rendered, a black image is created with mask channel that contains the shadow information. A compositor can work with this channel to blur, lighten, darken, etc., the look of the shadows.

When the reflection pass is rendered, an RGB image is created with a white mask in the mask channel.

To use the Use Background material to catch shadows and reflections, see the Lights and Cameras guide.

Does that help a little?

Also, Kbrowns link is a great one to try also!


Israel "Izzy" Long
Motion and Title Design for Broadcast-Film-DS
izzylong.com