A Principled Friendly Fresnel setup?

[greenrain]

Say, I think it would be great if we could have a briefing on how this node group, and the Beers-Lambert absorption group could be applied to a principled shader.  

[Kent Trammell]

This is a very relevant question. The principled BSDF has fresnel built in *for the metallic/specular values* but NOT for the roughness value. I’m not sure why this is the case but this video from Chocofur covers this well. Still I use the built in fresnel effect 90% of the time and never use the node group anymore.

As for the Beers-Lambert absorption group, I don’t think it’s compatible with the principled BSDF. Meaning I don’t believe the principled BSDF can be manipulated to achieve the same effect. I would still use the node-group.

[cultmethod]

As for the Beers-Lambert absorption group, I don’t think it’s compatible with the principled BSDF. Meaning I don’t believe the principled BSDF can be manipulated to achieve the same effect. I would still use the node-group.

Is there anywhere on the net that I can download this node group? Looking to give it a try.

[Kent Trammell]

Yes you can download the nodegroup here. This video explains the internal components and this video demonstrates its usage.

[Author]

Posts