Refraction Image plane from PBR

[Mzigaib]

I am using the new mantra surface shader with PBR to do a simple bottle of water, the results are great and fast no problem here, the only problem is with the image plane, I cant get the refraction extracted, it appears black, I have a image plane with a texture refracting through the bottle that I can only see on the beauty pass, but if I try to use the "combined refract" as an output, I just see black.

Maybe there's something to do with the BSDF connections and outputs inside the shader in the new surface model, I don't know how to output those.

Can anyone help me with that?

Sorry the bad English.

Thanks.

Edited January 17, 2011 by Mzigaib

[Mzigaib]

I identified better the problem, is the direct refract, is not appearing on my output plane.

If there's any object that is part of the final refraction of my main object rendered, like a plane with a texture the result on my direct refract is black.

I hope I could be clear.

Anyone else is having this problem?

Thanks.

[Jason]

Look for indirect_refract. Direct_refract is only for refractions of light sources --- like the area light geometry.

[Mzigaib]

Thanks for the feedback.

I did some experimentation and I found the result that I was looking for was on the "combined indirect" plane, there I can see the result of the refractions on a plane, It seems that like Jason said the other planes are for light sources.

It´s really a matter of understand how things work on the PBR world, and I am liking it.

Anyway thanks again.

Edited January 18, 2011 by Mzigaib