Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: MESTRE BIGA on 2023-07-24, 23:19:30

Title: TRanslucency Element thru glass
Post by: MESTRE BIGA on 2023-07-24, 23:19:30

I cant see th object in Translucency Element thru glass if I am using a Physical Material what does not occur when the material applyed is legacy material. Is there a workaround in physical mtl that does work?

Thanks

Title: Re: TRanslucency Element thru glass
Post by: Aram Avetisyan on 2023-07-26, 16:27:16

Hi,

So here is what I found:
• Legacy and Physical material, with full refraction, no thin mode - they act the same, meaning objects which contribute to CESSENTIAL_Translucency render element are NOT visible through objects which have mentioned materials applied
• Legacy and Physical material, with full refraction, with Thin mode - they act different, meaning objects which contribute to CESSENTIAL_Translucency render element are visible through LegacyMtl and not through PhysicalMtl.

Is this exactly what you are referring to? The Thin mode option is the key here I think.

Title: Re: TRanslucency Element thru glass
Post by: MESTRE BIGA on 2023-07-28, 21:26:28

Exactly!

Title: Re: TRanslucency Element thru glass
Post by: maru on 2023-08-02, 14:35:17

Perhaps enabling mask propagation would be the solution here? https://support.chaos.com/hc/en-us/articles/4528327507729

Title: Re: TRanslucency Element thru glass
Post by: Aram Avetisyan on 2023-08-16, 12:55:39

Mask propagation does not help here, there is a difference between Physical and Legacy materials on how they treat thin mode glass for Translucency render element, which may be expected for Physical material.

Nevertheless, this is reported now.
(Internal ID=1184329281)

Title: Re: TRanslucency Element thru glass
Post by: mark_yang on 2023-11-26, 13:04:32

This problem was discovered when I just upgraded to version 10. When coronaLegacyMtl adjusts the glass material to render animations, there will be random frame loss refraction or reflection problems. Switching to physical materials does not have this phenomenon. In the end, I compromised and used all physical materials (this problem It seems to only appear on materials with refraction)