Metal Shader work flow

littleclaude

Metal Shader work flow. I saw this post by Jarrod Hasenjager and thought I would share it with you guys, hope it helps.

Inside the following link there are loads of metal swatches, as you can see in the example below, enjoy.
https://www.artstation.com/artwork/aL4JR 

EarthQuake

While these renders look nice, I would caution anyone using these as reference material for texture values in games. He appears to be using both an IOR and a specular intensity value, essentially setting the reflectivity twice. So copying the spec values into your textures and putting them in a game engine probably won't work well. For instance, his rust materials have a spec intensity of 60%, which should be about 4% instead in a standard pbr specular workflow shader.

almighty_gir

Joe, i think this is set up for Arnold renderer, which does a stupid thing where IOR is for dielectrics and specular is for metals.

pre-rendered tech is dumb. lol.

Neox

good that there is this info about fresnel thats always yes

so which material would not use fresnel?

EarthQuake

0xffff

Neox said:

good that there is this info about fresnel thats always yes

so which material would not use fresnel?

Because everything has fresnel

almighty_gir

Neox said:

good that there is this info about fresnel thats always yes

so which material would not use fresnel?

https://www.youtube.com/watch?v=FhRiDsmZMag

NNKD

Everything has fresnel!

"It was theoretically predicted that Vertically Aligned carbon NanoTube Array (VANTA) coatings should have an extremely low index of refraction  implying Fresnel reflection from such materials will be low. The combination of low Fresnel reflection with the strongly-absorbing behaviour of a highly-percolated structure suggests the reflectance of VANTA coatings will be extremely low."
https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-22-6-7290&id=282123