Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Bug Reporting => Topic started by: ChrisMyatt on 2021-06-22, 17:14:18

Title: IES Lights and Reflections
Post by: ChrisMyatt on 2021-06-22, 17:14:18

Is it known that IES Profiles won't show the light in reflections? I can't see any topics on it so thought i'd raise one

Title: Re: IES Lights and Reflections
Post by: burnin on 2021-06-23, 00:49:57

I see it just fine...

Title: Re: IES Lights and Reflections
Post by: TomG on 2021-06-23, 01:40:08

Do you mean the light source itself? If so, be sure "Prevent black appearance" is enabled, but do note that this may not work in reflections or refractions depending on the directionality of the light (an IES pattern is just a directionality with a pattern to it). If that's the case, the solution is to create an object with a CoronaLight material on it (emit light disabled) to act as the visible / reflected / refracted light source, and make the actual light source invisible directly, to reflections, and to refractions - ie one will be seen and not emit light, one will emit light and not be seen.

Title: Re: IES Lights and Reflections
Post by: burnin on 2021-06-23, 13:22:58

In example above "Prevent black appearance" is enabled but light source ain't reflected. IME for archviz, it's better to either make a simple encasement or, if you wanna add extra detail, use a plain with emissive texture. 

eg. just w/ encasement