Self-illuminated Material And Corona Light Material become black in Refraction

[Ko Nay]

Somebody help! I have problem with Self-illuminated Material And Corona Light Material. They appear black in Glass Refraction. Please see the attached image.

3Ds Max 2016, Corona 2.0

[Philip kelly]

Ya same problem with a large concourse in hospital and lots of linear lights

[Beanzvision]

Have you tried the "thin glass" option in the refraction settings?

[Ko Nay]

Have you tried the "thin glass" option in the refraction settings?

Thanks. I will try that.

[maru]

Could you send us your scene (or a part of it where the issue can be seen)? https://corona-renderer.com/upload
We're interested in checking this. It looks like a known problem with light transport (https://coronarenderer.freshdesk.com/support/solutions/articles/5000516180) but kind of exaggerated.
Could be the directionality parameter in the light though.

[Ko Nay]

Thin glass option in the refraction settings fixed my problem. Thank you. @beanzvision

[Beanzvision]

Thin glass option in the refraction settings fixed my problem. Thank you. @beanzvision

You're welcome. But as Maru mentioned, could you please send us the file? Thanks!