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How to render shadows only?

Posted: Thu Dec 03, 2015 11:24 am
by CipheredDesigns
Hi,

could someone please explain how to render only the shadows of a scene?

I have a simple obj. scene containing a floor and a cube. I want to make the two meshes invisible but keep the shadow of the cube active.
Is that possible?

Thank you
CD

Re: How to render shadows only?

Posted: Thu Dec 03, 2015 11:45 am
by bepeg4d
Hi,
yes, it is possible ;)
Please, have a look at the Render Layer documentation:
https://docs.otoy.com/#51Render%20Layer%20Passes
ciao beppe

Re: How to render shadows only?

Posted: Thu Dec 03, 2015 12:03 pm
by CipheredDesigns
Yes, I´ve studied this tutorial but I´m not able to reproduce the steps.
Its far too complicated for octane beginners.

As mentioned in my first post, I have a scene with only two objects. In the scene example of your link, there are over 20 different nodes..
I have no idea where to find an object layer map or an object layer In..

This is really difficult to understand

Re: How to render shadows only?

Posted: Thu Dec 03, 2015 2:31 pm
by CipheredDesigns
After investing some more time, I managed to isolate the shadows in my scene.

This thread can be closed, thank you.

CD

Re: How to render shadows only?

Posted: Thu Dec 03, 2015 3:12 pm
by bepeg4d
Hi,
great, anyway here are a couple of examples, one with two separated objects and the second with one unique mesh, I hope that they could help other users to figure out better how it works ;)
separated objects
separated objects
RenderLayerShadow.orbx
(43.79 KiB) Downloaded 157 times
single mesh
single mesh
RenderLayerShadow2.orbx
(58.88 KiB) Downloaded 140 times
ciao beppe

Re: How to render shadows only?

Posted: Thu Dec 03, 2015 4:15 pm
by CipheredDesigns
Thank you very much Beppe :)

I´m sure your post will be very helpful for other users!

Regards
CD