Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Rhodesy on 2019-08-02, 10:55:07

Title: lights showing as black through refractive glass
Post by: Rhodesy on 2019-08-02, 10:55:07

We are having some issues that should be obvious from the attached image. Basic corona rectangular lights used but they turn black when looking at them through the glass. We use refraction in the glass material (not set to thin) as we feel it looks much more realistic and the rendering hit isnt that bad when its so thin. But there is this issue with corona lights not showing through the glass. Light emitting materials dont have this problem.

We are using Corona 4 RC3, so should probably upgrade to the latest but hopefully there is something obvious we can do to fix this?

Thanks
Rob

Title: Re: lights showing as black through refractive glass
Post by: Hilmar on 2019-08-02, 12:42:59

not sure if it was Vray…… in the glassmaterial you could define how many time the lightray should travel between the glass and which Color it should get after Xtimes.

Title: Re: lights showing as black through refractive glass
Post by: Hilmar on 2019-08-02, 12:49:33

if you set this MAX RAY DEPTH to low, it will happen as well.

Title: Re: lights showing as black through refractive glass
Post by: Rhodesy on 2019-08-02, 12:59:30

Thanks, although I dont think the max ray depth should make a difference here as it happens when only going through 2 faces.

Title: Re: lights showing as black through refractive glass
Post by: Frood on 2019-08-02, 13:18:24

What about the most obvious: Visibility in refractions is activated in the lights I presume?


Good Luck

Title: Re: lights showing as black through refractive glass
Post by: Rhodesy on 2019-08-02, 13:32:08

OK, we have tracked it down and think its a bug. If we set the directionality to 0.4 everything works as it should but 0.5 and higher it goes black through the glass. I will put it in the bugs section now.

Title: Re: lights showing as black through refractive glass
Post by: Jpjapers on 2019-08-02, 14:39:19

Quote from: Rhodesy on 2019-08-02, 13:32:08

OK, we have tracked it down and think its a bug. If we set the directionality to 0.4 everything works as it should but 0.5 and higher it goes black through the glass. I will put it in the bugs section now.

I think this has been picked up before as i had the same issue