Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: tero.design on 2021-09-08, 16:48:35

Title: [Solved] problem with liquid in glass
Post by: tero.design on 2021-09-08, 16:48:35
Hello Coronarenderer teams and comrades,
We have next problem... See the screenshot:
(https://i.ibb.co/LkXNJSz/photo-2021-09-08-16-06-51.jpg) (https://ibb.co/znT67sh)
In the right picture, liquid and glass are separate objects. On the right side, the objects have been attached. Here you can see the error of the material with absorption. Of course, we can leave 2 separate objects, but this is not so usefull for us. We really expected that this will be fixed in the 7th version, but the error is happens in the new physical material too :(

PS.
Please do not need to send a link explaining how the geometry of liquid and glass should look like, since the question is not how to make the geometry correctly, but how to make the result identical before and after attaching - I think we all understand that this should not happen so that after attaching objects to each other, their material changes.


I am also attaching a link to the model for this test: https://www.dropbox.com/s/jypgiigx9p48gkb/01_tdm_00.rar?dl=0
We really hope to get an answer and a quick solution to this problem in new updates of the program.
Title: Re: problem with liquid in glass
Post by: D0br0 on 2021-09-08, 18:00:29
I second the question. This problem appears from time to time.
Title: Re: problem with liquid in glass
Post by: 3Dmitri on 2021-09-08, 18:12:06
I also have this problem
Title: Re: problem with liquid in glass
Post by: Kost4d on 2021-09-09, 00:13:33
Yes, it is kind of problem indeed... Can you fix this somehow?
Title: Re: problem with liquid in glass
Post by: GeorgeK on 2021-09-09, 10:10:02
Hi everyone, this is already reported and logged, hopefully it will be improved in the future.

https://jira.chaosgroup.com/browse/CRMAX-861
Title: Re: problem with liquid in glass
Post by: xronono on 2021-09-09, 10:26:52
hey! I have the same problem.. pls help us to solve it or explain why it's going?
Title: Re: problem with liquid in glass
Post by: mirrra on 2021-09-09, 10:33:05
and i also have this problem
Title: Re: problem with liquid in glass
Post by: Kalopsia on 2022-05-03, 12:18:30
Ahhh. So the bug has been noticed by more users. This seams to still be a problem even in Corona 8.
Is this going to be addressed at some point??
Title: Re: problem with liquid in glass
Post by: maru on 2022-05-03, 14:26:44
I think we all understand that this should not happen so that after attaching objects to each other, their material changes.

So the bug has been noticed by more users.

and i also have this problem

I don't think this is really a "bug" or a "problem", and I am not sure if everyone agrees or understands that this should not be happening. I think this is just how something currently works in Corona.
But since there are multiple reports that this is not expected, we have it logged, and we will see if this is something we could improve.

If anyone else finds this behavior incorrect/unexpected, please feel free to post here.
Title: Re: problem with liquid in glass
Post by: romullus on 2022-05-03, 14:48:43
If anyone else finds this behavior incorrect/unexpected, please feel free to post here.

I have an opposite problem - in certain situations refractive materials works correctly only when all meshes are combined into single object. Sometimes it's not a problem to keep objects separated, or combined, but there are situations where it's highly preferable to keep objects in one state, or another and Corona's pickiness about that is a major pain. It would be nice if some time in the future this limitation would be finally lifted off.
Title: Re: problem with liquid in glass
Post by: Kalopsia on 2022-05-09, 10:59:54
Looks great romullus. And you put it very well, it is a bit quirky and that can be very time consuming when dealing with refraction. However, I don't understand why this would not be a bug. Should it not render exactly the same, no matter if it is one mesh or if it's multiple meshes?? Or is there a reason the Corona team implemented it this way?