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A comment on This file has Pantone colors that have been removed and replaced with black. Parent comment

Re:This file has Pantone colors that have been removed and r... by account42 on Friday October 28, 2022 @09:25AM (#33371091)
The term for that is a bidirectional reflectance distribution function (BRDF). No idea about libraries of BRDFs for common materials but considering how even games have moved to physically-based rendering there must be.

https://en.wikipedia.org/wiki/Bidirectional_reflectance_dist...

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Re:This file has Pantone colors that have been removed and r... by bogwog on Friday October 28, 2022 @11:14AM (#33372426)
The original PBR paper cites a materials database made by one of those big Japanese companies many years ago (I think it was Mitsubishi?)

EDIT: found it! It’s called MERL (https://merl.com/brdf)

Modern PBR specifically doesn’t really rely on artists choosing a BRDF though. The idea is to pick one that’s accurate, and expose a handful of variables to control it (roughness and metalness mostly)

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