Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: Spark on 2013-03-15, 16:43:29

Title: Question about CoronaLight
Post by: Spark on 2013-03-15, 16:43:29

Is it possible to make CoronaLight invisible to reflections/refractions? I can't find such parameter.

If not, I think, a lot of people would like to find this parameter at newer builds ;)

Title: Re: Question about CoronaLight
Post by: Ondra on 2013-03-15, 16:58:38

there will be one "disable visibility" checkbox in Alpha 4

Title: Re: Question about CoronaLight
Post by: Spark on 2013-03-15, 17:11:37

Great! Thank you for fast reply )

Title: Re: Question about CoronaLight
Post by: Spark on 2013-03-16, 18:14:35

One more question.
I need to scale spherical CoronaLight. But when light is scaled, scene renders incorrect, all picture is very overbrighted.

Is it bug or feature?

Title: Re: Question about CoronaLight
Post by: Ondra on 2013-03-16, 18:19:09

Non-uniform scaling of spherical lights is not supported yet, use a geometry emitted instead.

Title: Re: Question about CoronaLight
Post by: Spark on 2013-03-16, 18:21:20

thanks
But it seems that emitted geometry causes much more noise, then lights :(

Title: Re: Question about CoronaLight
Post by: Ondra on 2013-03-16, 18:31:30

yes, but only spherical lights can be easily sampled better

Title: Re: Question about CoronaLight
Post by: Spark on 2013-03-16, 18:34:08

Maybe it't possible to add rounded light to the following versions? Or it won't be differences between it and emitted geometry?

Title: Re: Question about CoronaLight
Post by: Ondra on 2013-03-16, 18:40:01

It would not pay off, best I can do is to internally triangulate such lights to meshes.

Title: Re: Question about CoronaLight
Post by: Spark on 2013-03-16, 18:52:50

I render simple interior. Here are two renders.
I use emitted geometry in the other room, which totally has no connections with this room. One render with emitters , second with hidden emitters.

In the theory, those emitters can't affect to the lightning of this room, but they noises picture a lot.

Title: Re: Question about CoronaLight
Post by: Ondra on 2013-03-16, 19:00:26

What happens in the other room does affect this one. For all you know, there could be an atomic bomb explosion seen through the keyhole. There are some methods to automatically detect what is important and what not, but they are not used in praxis, because they have many caveats.

Title: Re: Question about CoronaLight
Post by: Polymax on 2013-03-17, 18:56:09

2 Spark: Can you post your scene (empty)?
I can not get the same effect :(