Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: LRNTNVLL on 2022-11-18, 14:29:41

Title: C4D Thinfilm doesn't work anymore with Corona
Post by: LRNTNVLL on 2022-11-18, 14:29:41
Hello guys,

To make the carpaint of the car in the picture attached I used the C4D Thinfilm texture in a corona 7 shader. It works very well to simulate the real carpaint used on this concept car and very simple to make.
But since the version 8 of Corona, the C4D Thinfilm doesn't react in a same way. Same issue with Corona 9, and I must to reinstall Corona 7 to make new pictures to have the good shader.

Any idea or solution to have the good carpaint with Corona 9 ?

Thank you very much.
Laurent
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: HVB on 2022-11-18, 16:19:07
Did you try using legacy material?
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: LRNTNVLL on 2022-11-18, 20:27:48
Did you try using legacy material?

It was a legacy material. Same issue with physical.
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: LRNTNVLL on 2022-11-25, 00:56:06
Any advice guys ? Chaos guys ?
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: Beanzvision on 2022-11-25, 11:32:22
Hi there, there does seem to be an issue with the Thin Film shader. If it's not reported already, I will do so. I was having a look at some options and these are my workarounds so far.

1. Scanned material: 555f00prism
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175034;image)

2. A Layered mat with the edge colour bumped up and fresnel
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175036;image)

3. A layered with a Legacy mat & Fresnel IOR cranked to 999, Glossiness at 69% & a fresnel shader in the the colour texture slot of the reflection channel.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175038;image)
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: Cinemike on 2022-11-25, 17:38:58
Maybe it's just time for an integrated thin film layer in the physical material.
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: burnin on 2022-11-25, 19:00:43
IDK how you all make it, but to me it seems to behave correctly.
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: Beanzvision on 2022-11-28, 13:32:37
One more for fun ;)
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175177;image)
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: LRNTNVLL on 2022-12-04, 03:48:33
Hi there, there does seem to be an issue with the Thin Film shader. If it's not reported already, I will do so. I was having a look at some options and these are my workarounds so far.

1. Scanned material: 555f00prism
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175034;image)

2. A Layered mat with the edge colour bumped up and fresnel
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175036;image)

3. A layered with a Legacy mat & Fresnel IOR cranked to 999, Glossiness at 69% & a fresnel shader in the the colour texture slot of the reflection channel.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175038;image)


Thank you very much. I will test them.
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: LRNTNVLL on 2023-06-23, 13:36:51
Hi there, there does seem to be an issue with the Thin Film shader. If it's not reported already, I will do so. I was having a look at some options and these are my workarounds so far.

1. Scanned material: 555f00prism
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175034;image)

2. A Layered mat with the edge colour bumped up and fresnel
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175036;image)

3. A layered with a Legacy mat & Fresnel IOR cranked to 999, Glossiness at 69% & a fresnel shader in the the colour texture slot of the reflection channel.
(https://forum.corona-renderer.com/index.php?action=dlattach;topic=38475.0;attach=175038;image)


the C4D Thin Film shader still doesn't work with Corona 10 :( I'm disgusted.
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: burnin on 2023-06-24, 10:28:10
Works physically correct. Set it in 'Absorption' channel of  'Clearcoat layer' (worth to know what thin film really is).
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: LRNTNVLL on 2023-06-24, 11:59:11
Works physically correct. Set it in 'Absorption' channel of  'Clearcoat layer' (worth to know what thin film really is).

Don't work. check out my first post. :)
I know what is a thin film don't need a professor :D Just I use it in a different way for a different use.
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: burnin on 2023-06-24, 17:05:02
'Legacy' approach - use 'Legacy material' - keep it 'simple (https://bonpote.com/en/the-5-basic-laws-of-human-stupidity/)'... It's magic. lol

Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: LRNTNVLL on 2023-07-14, 12:44:30
'Legacy' approach - use 'Legacy material' - keep it 'simple (https://bonpote.com/en/the-5-basic-laws-of-human-stupidity/)'... It's magic. lol

If you are so good show me how to do exactly the same carpaint shader on the left.
It will be more efficient than words... :D

Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: Beanzvision on 2023-07-17, 08:45:57
We do have this logged to look in to.
(Internal ID=655237720)
Title: Re: C4D Thinfilm doesn't work anymore with Corona
Post by: burnin on 2023-07-21, 16:40:01
If you are so good show me how to do exactly the same carpaint shader on the left.
It will be more efficient than words... :D
DS's one (in Citroen's marketing campaign by DLP Paris) (https://dlpparis.com/dlpparis/ds-etense-performance/) looks somewhat artistically modified. The real one, I suspect is mimicking 'golden' beetle's metalic-like shell (science behind) (https://www.scientificamerican.com/gallery/bug-alchemy-gold-and-silver-beetles-shine-with-structural-color/).

Haven't delved further in details, but just made quick example using Corona's Physical material and C4D's "Thin Film" effect with shortened bandwidth and set frequency (to my taste).