Is it possible to "deconstruct" a CoronaLayeredMtl in post production?

Corona Corona for 3ds Max Help Required
1

Hi all,

As the subject implies, I am trying to deconstruct a CoronaLayeredMtl and reassemble it in post-production (using Photoshop):

  • The material I’m working with is a carpaint, it consists of a base coat and a clear coat
  • The base coat and the clear coat are each layers in a CoronaLayeredMtl I created
  • The mask that “mixes” the two layers is a falloff (fresnel)
  • I’m using 32-bit uncompressed EXR’s for all renders

My question is whether it is possible to render the base coat and clear coat separately and then combine them in post? If so:

  • How do I output the fresnel falloff in 3ds Max to an exr that can be used as a mask between the layers in Photoshop
  • What would be the proper “blending mode” to use in Photoshop? Normal, linear dodge or something else?

Appreciate the help.

Nate

2

I tried to render separately base, coat and falloff mask and combine in photoshop. It almost works… except for self reflection. I have no idea if it’s possible to overcome this issue.

3

Thanks Romullus. The self reflection was an issue I noticed as well. How did you output the falloff mask?

4

Through CTexmap render pass.

5

Ah yes, I guess that should have been obvious, I was making it more complicated than I needed to.

Would love to know if devs have any insight, would really be a game changer for me if I could render these out separately.