Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Feature Requests => [Max] Resolved Feature Requests => Topic started by: dubcat on 2016-07-21, 13:11:45

Title: Higher glossiness at grazing angle
Post by: dubcat on 2016-07-21, 13:11:45

My long time wet dream became a reality the other day, but in the wrong render engine :(
Those who have seen my guides, may have noticed that I apply a falloff in the Glossiness chain. This is to simulate that even rough surfaces are glossy on the edges/tangent.

fstorm got this feature the other day "angle affect" increases material glossy for low(tangent) angles"

Could we pleeeeeeease get this feature in Corona ? :)

Here are some examples of "angle affect" 0 - 1.
They are separate images, so you can compare them in a new tab or something.

(http://i.imgur.com/fwBWAFK.jpg)

(http://i.imgur.com/HPIloOh.jpg)

(http://i.imgur.com/jQcEORY.jpg)

(http://i.imgur.com/Xl6BHNO.jpg)

(http://i.imgur.com/pFV4ncw.jpg)

(http://i.imgur.com/Zbd3eB1.jpg)  (http://i.imgur.com/V8Nbn97.jpg)

Title: Re: Angle Affect
Post by: JulioCayetano on 2016-07-21, 16:28:44

Yes, nice, this is a really handy feature.

THEA Render has it since a couple of years ago, it´s called Micro Roughness, and it has 2 values to control that effect, something like the radius and the height of those "micro-bumps". A bit too complex for my taste, I would go for a simple 0-1 param like in your example.

Title: Re: Angle Affect
Post by: Ondra on 2016-07-21, 16:37:29

AFAIK this is part of disney BRDF model, so it will be almost certainly included in Corona PBR mtl

Title: Re: Angle Affect
Post by: pokoy on 2016-07-21, 17:59:14

Quote from: Ondra on 2016-07-21, 16:37:29

AFAIK this is part of disney BRDF model, so it will be almost certainly included in Corona PBR mtl

As this is common to all materials, couldn't this be included in the 'standard' material as well?

Title: Re: Higher glossiness at grazing angle
Post by: Ondra on 2022-01-14, 20:17:40

This is more or less solved by PBR material