Material Database

Pearl (fake!)

Author
galinette
Required
Indigo 3.0+
File size
2.18 KB
Created
2010-08-19
Favourites
0 people
Votes
5.0 stars by 6 people
Downloads
3951
Category
Gemstones

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Pearlv3

This is a tentative to make a pearl material.

Natural pearl material are made of hundreds of quasi-periodic thin film structure. They are translucent and feature interference effects in the volume.

Faked pearl-looking materials are plain translucent materials (such as milky plastic or glass) with a thin film coating (high index material) having non-uniform thickness. Therefore, the interference is only surfacic, causing part of the fake look.

As it is not possible to make volumic interferences in Indigo, I made a material which is physically quite close to the industrial fake version. The inner material is regular milky SSS, and the surface is a thin-film computed by a spectral shader. It's not 100% correct as I cannot put an angle dependant blend shader (thus the transmission coefficient is constant where it should have been 1-R)

Rendering this material is very slow due to SSS

Enjoy,

Etienne

Comments

havha said on 02-01-2017:

Hi Etienne,

I like this material but unfortunately when I use it i get a complete different material look.

Do i need to make manual adjustments?

Kind regards,
Hans

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