Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: rauland on 2025-03-12, 16:17:15

Title: IOR
Post by: rauland on 2025-03-12, 16:17:15

Hello!

If IOR goes from 1 to 3, 1.5 will be a 50% gray in color?
I want to plug a Multimap to the glass material in order to have some variation on a curtain wall.

Thank you!

Title: Re: IOR
Post by: maru on 2025-03-12, 17:18:45

If you want to drive IOR by a texture/color, then pure 255 white with a multiplier of 1.3 will be interpreted as IOR 1.3.
If you use values lower than 1, then the value is interpreted as 1/value. So for example a value of 0.5 will result in 1/0.5=2.
Ergo, a value of 2 will give you the same result as a value of 0.5.

Title: Re: IOR
Post by: rauland on 2025-03-12, 20:09:58

For glass, multiply the output by 1.5 right?

Title: Re: IOR
Post by: maru on 2025-03-13, 09:23:41

If you would like the IOR to be 1.5 then use a white Corona Color map and set the multiplier to 1.5, yes.