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Disney BRDF material
Posted: Wed May 29, 2019 4:05 pm
by Dade
Re: Disney BRDF material
Posted: Wed May 29, 2019 4:11 pm
by provisory
Wow, fantastic news! Thank you Stefan!
Re: Disney BRDF material
Posted: Wed May 29, 2019 4:17 pm
by provisory
Are there any limitations (e.g. does it work with BiDir)?
Re: Disney BRDF material
Posted: Wed May 29, 2019 4:17 pm
by lacilaci
Great news!
Re: Disney BRDF material
Posted: Wed May 29, 2019 4:26 pm
by epilectrolytics
Awesome, big thanks!
Re: Disney BRDF material
Posted: Wed May 29, 2019 4:41 pm
by Sharlybg
Don't understand what is going on. What is the bonus for having Disney BRDF material ?
how different it is from the current implementation ?
Is it more realistic ? faster to sample ?
We don't need principled shader now ?
Re: Disney BRDF material
Posted: Wed May 29, 2019 5:06 pm
by epilectrolytics
Disney = principled shader, see
here.
It was not yet implemented in Luxcore but planned for v2.3.
It is more realistic but slower to sample because it has always a reflective component.
If fully implemented it should work similar to Cycles principled shader.
From what I see OCL code and Blender integration are still missing.
Re: Disney BRDF material
Posted: Wed May 29, 2019 6:00 pm
by lacilaci
is it brdf or bsdf if it has subsurface? I also wonder what is this approximated subsurfacing.
Do you plan to build future work on it? Adding translucency, thin film layer, will you turn this into a monster ubermaterial for 2.3? I hope it renders fast too...
Re: Disney BRDF material
Posted: Wed May 29, 2019 6:10 pm
by provisory
If it works well, then it must make the switch between Cycles and LuxCore really easy, which would be a big step forward.
Re: Disney BRDF material
Posted: Wed May 29, 2019 6:26 pm
by Dade
lacilaci wrote: ↑Wed May 29, 2019 6:00 pm
is it brdf or bsdf if it has subsurface? I also wonder what is this approximated subsurfacing.
It is a BRDF, no ray it is transmitted but it can include SSS look-like appearance.
You can just check the original paper if you want more details:
https://disney-animation.s3.amazonaws.c ... tes_v2.pdf (you can skip the math/coding stuff and just look at picture at pag. 13)