3

IOR

Ethos Erlanger

September 18, 2017 13:41

None

Follow

Please add IOR

2 comments

• 0
  
  Teddy September 18, 2017 14:12

  0.04 + metalness * (albedo - 0.04) = (ior-1)*(ior-1)/((ior+1)*(ior+1)),

  where metalness and albedo packed to 0-1 float

   

  there 3 IOR's, one for each albedo component

  but for non-metals all 3 same and equal to 1.5 (ior of plastic)

  -----------

  From Substance and this information https://seblagarde.wordpress.com/2011/08/17/feeding-a-physical-based-lighting-mode/

   

  Edited by Teddy September 18, 2017 14:30
• 0
  
  Humbaba January 09, 2018 07:33

  It's my understanding that PBR rendering handles IOR for you.