Coating material tests

[OnoSendai]

Thought I'd make a new thread for test renders.

First off:
Interference from a thin coating, where the coating thickness is controlled with an FBM shader.
The substrate material is a somewhat rough metal.
All the rainbow colours come from light interfering with itself as it passes through the dielectric coating, which is a few micrometres thick.

A bit similar to one of Etienne's materials: http://www.indigorenderer.com/materials/materials/1065

[OnoSendai]

Using a more accurate interference model plus turbulence noise:

[pixie]

Owesome ono is awesome!

[OnoSendai]

Another one, with tweaked interference code:

[Zom-B]

I'm looking forward to play with that coating feature!
Only thing that kind is quite scary here is the SDS noise after 31min and 2500 samples/px -.-'

[OnoSendai]

Yeah I'm not sure if the noise is a problem with the new coating material or not. Seems like it may be.

[Pibuz]

The coating material is looking cool!
I see it reproduces some kind of rainbow-y effect on the surface it is applied to: is it something depending from a specific parameter? For architectural mats I'd use coatings for varnished floor mainly, but they don't have such rainbows

[Zom-B]

I see it reproduces some kind of rainbow-y effect on the surface it is applied to: is it something depending from a specific parameter? For architectural mats I'd use coatings for varnished floor mainly, but they don't have such rainbows

That test have some special ISL code in the coating that creates that effect, its not per default mate!
"Simple" coating looks like that: http://www.indigorenderer.com/forum/vie ... 37#p119037

[Pibuz]

..OPS! And I had already seen that!
Sometimes you guys can forget my questions..........

[OnoSendai]

Hi Pibuz,
The thin-film interference will be optional - it will be a checkbox on the coating material UI.

[OnoSendai]

Testing absorption in the coating.
The red colour comes from the absorption of non-red light as light passes through the coating layer.

[OnoSendai]

Here's the thin-film coated metal:

[OnoSendai]

Make sure you have 3.6.2 installed if you want to try out the above materials!

http://www.indigorenderer.com/forum/vie ... =1&t=12056

[CTZn]

Testing absorption in the coating.
The red colour comes from the absorption of non-red light as light passes through the coating layer.

To put it in other words, the material underneath the coating is a grey metal. Gorgeous.

[OnoSendai]

Doing a bit of work on getting the coating material going with transparent substrate materials.

Coating material over diffuse - diffuse-transmitter blend can be used to create quite a nice 'fast-SSS' material: