Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: dubcat on 2015-11-03, 23:31:38

Title: Glossiness, "Corona Converter" and "Falloff Map" Party
Post by: dubcat on 2015-11-03, 23:31:38
This question suddenly struck me.
Should we use the converter as the last step in the glossiness chain or before the glossiness falloff map.

Here are some renders to show the difference.

(http://i.imgur.com/AYUSB9j.jpg)(http://i.imgur.com/KNSUDz3.jpg)(http://i.imgur.com/C4DbUFW.jpg)

and here are the maps

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

Here's another example that doesn't get totally crushed in Corona

(http://i.imgur.com/KEMPgsT.jpg)
Title: Re: Glossiness, "Corona Converter" and "Falloff Map" Party
Post by: racoonart on 2015-11-04, 10:13:52
Hmm.. well, the conversion curve clamps values at around .5 so it's not too surprising that it looks like that (still ugly though). The lighter version below doesn't have such low values so it simply looks better.
If it's the same setup that you've used (or would have used) in Vray then the conversion is correct. I'm not entirely sure where this is going since a falloff map is just like any other map.
Title: Re: Glossiness, "Corona Converter" and "Falloff Map" Party
Post by: Juraj on 2015-11-04, 21:16:18
If it's the same setup that you've used (or would have used) in Vray then the conversion is correct. I'm not entirely sure where this is going since a falloff map is just like any other map.

My understanding seem to be that the most correct result would be applying Output clamping as the final chainlink on top of the whole network in glossy slot, not on individual texture maps.
Title: Re: Glossiness, "Corona Converter" and "Falloff Map" Party
Post by: dubcat on 2015-11-04, 23:11:19
a falloff map is just like any other map.

My understanding seem to be that the most correct result would be applying Output clamping as the final chainlink on top of the whole network in glossy slot

That was my first thought before the brainfart struck. Thanks for clearing it up guys.
I finally got around to do a quick test to back it up also.

(http://oi63.tinypic.com/6gihll.jpg)(http://oi64.tinypic.com/4uhv6t.jpg)

To clear it up for people reading this in the future. Always use the Corona Converter Output map last in the Glossiness chain.