Help with Render Layer

Started by alessandro, May 06, 2014, 06:46:19 pm

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alessandro

Sorry if this is a dumb question, but I need to ask if a Render Layer is capable of saving a population+cast shadows to a layer.
I've ran several tries but was able only to render the population and the alpha, but no shadows from it.
Thanks

Dune

I know I promised to help you, but I can't on this. Never touched render layers yet. But someone will pass along...

j meyer

Currently there is no shadow render element.
Depending on your needs it might be possible to figure out a workaround,though.

alessandro

My need would be to be able to render a tree population and the shadows casted on the terrain only. So that at the end I have a rgb+alpha file containing such trees+shadows.
I'm not sure if this could be doable with some tricks: for example having terrain mat set to white with ambient to 100% and no diffuse (?) so that it acts as a shadows catcher, and trees to full black and render without atmosphere. So that I'd basically get a black and white trees+shadows mask of some sort.
But I hoped the render layers were able to handle that...

j meyer

The trees are no problem.You can do that easily,with alpha and as hold out and so on.
What you suggest (terrain mat to white etc) would be a good starting point and
should work,if it fits your purposes.