Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: notoriousbug on 2025-04-09, 12:01:02

Title: Problem with corona select map
Post by: notoriousbug on 2025-04-09, 12:01:02
hello everyone, i probably use corona select maps incorrectly..
however i try to ask you for confirmation
I noticed that if I create a Corona Sky and assign it directly to Environment I get a result, if the same Corona Sky is assigned to Environment however
through a Select map the result is not always identical and I don't understand why..
For my convenience and being able to easily change the Environment seems quick as a method but I think I am doing something wrong and I would like to understand what..
thanks
Not

(https://i.postimg.cc/HkyqZfdV/screen-01.jpg)
(https://i.postimg.cc/NGCZgg0K/screen-01-b.jpg)
(https://i.postimg.cc/JzZFcZ5X/screen-02.jpg)
(https://i.postimg.cc/1t5YQTh0/screen-02-b.jpg)
(https://i.postimg.cc/FzwP0HfG/screen-03.jpg)
(https://i.postimg.cc/c48k0wjz/screen-03-b.jpg)
(https://i.postimg.cc/vZFqBDwZ/screen-04.jpg)





Title: Re: Problem with corona select map
Post by: Frood on 2025-04-09, 14:21:34
hello everyone, i probably use corona select maps incorrectly..

You are only encountering bugs I guess. It's (almost) impossible to use them wrongly.

For my convenience and being able to easily change the Environment seems quick as a method

Generally yes. Exception is: you have cloud shadows activated in the sun. I reported that issue while testing V9 dailies, now in V13 dailies it's still there.


Good Luck



Title: Re: Problem with corona select map
Post by: notoriousbug on 2025-04-09, 14:30:52
@Frood Thank you :)
Not
Title: Re: Problem with corona select map
Post by: Avi on 2025-04-10, 19:37:57
Hi,

Can you help us reproduce this issue by starting a ticket and sending your scene along with some steps which we can follow to reproduce this issue on our end?

https://support.chaos.com/hc/en-us/requests/new (https://support.chaos.com/hc/en-us/requests/new)

I already tried to repro it, but I can't.
Title: Re: Problem with corona select map
Post by: Frood on 2025-04-11, 10:56:19
Hi,

I already tried to repro it, but I can't.

Repro steps:

1. New scene with a teapot of your choice
2. Create Corona Sun with "shadowing from clouds" activated
3. Create Corona sky map with cloud amount=1
4. Create Corona sky map with cloud amount=0
5. Create Corona select map
6. Plug sky from (3) in slot 0 of the select map
7. Plug sky from (4) in slot 1 of the select map
8. Plug the select map into (any used) environment slot
9. Render and switch skies using the select map

-> when slot 1 is selected in the switch map (the sky using no clouds), you get cloud shadows from slot 0.

Good Luck



Title: Re: Problem with corona select map
Post by: maru on 2025-04-15, 13:17:31
Continuing in support ticket #367681.
Title: Re: Problem with corona select map
Post by: maru on 2025-04-30, 14:13:04
(Report ID=CMAX-1599)
Title: Re: Problem with corona select map
Post by: Aram Avetisyan on 2025-05-01, 15:28:26
Hi,

We already have, specifically, clouds shadow bug fixed with select map use case, internally.
I am checking if the rest (volume effect and some others) can be fixed with this as well.