Additive / Shellac mode for corona layered material ...

[davood.kharmanzar]

it would be great if implement Additive / Shellac mode to corona layered material.

[Duron]

it would be great if implement Additive / Shellac mode to corona layered material.

+1
I was really happy to finally get the layered material with 1.3 but i was a little bit dissapointed as i saw that i can't switch to additive mode.
Please add this feature because this is really essential for automotive artists like me. I know it's a fake function but the workflow i'm using requires an additive mode.

I've attached an render which i did with vray and it shows my technique of doing procedural flakes with additive blendmtl. I already tried the same approach in Corona but unsuccessfully..

[Ondra]

nope, not adding unphysical modes. There should be a reasonable way to do it physically

[Yehat]

How to do the car coating materials and other lacquered materials?

[romullus]

Look for official car paint tutorial here: https://corona-renderer.com/resources/tutorials/

[Yehat]

This looks like carpaint, yes, but this is not a transparent material with another glossiness upon the base layer.
Carpaint is the special case of it.

[romullus]

If you're here for a believable looking picture, then feel free to take whatever shortcuts and cheats you can - as long as result is great, nobody will care how it's achieved. OTOH, if you're looking for scientifically acurate material recreation, i'm affraid i can't help you here. I know that there are renderers that claims their materials are constructed in "physically correct" manner, but for me added complexity just not worth arguably marginal improvement in image believableness :]

[maru]

Hi, I tried my best. :)
Is it close?
Sorry for the patterned flakes.

[Yehat]

How? Tell, please. This is exaclty what i need.

[maru]

Basically carpaint tutorial mentioned before. Scenes in Max14 attached.
(update: added maps)

[Yehat]

Hmmm, awesome trick! Blend with mirror, not with glass. Thanks! I will try to use it.

[maru]

Hmmm, awesome trick! Blend with mirror, not with glass. Thanks! I will try to use it.

Why would you want to use glass here? Generally blending refractive materials is not a good idea.

I advise to take a look at our helpdesk articles from time to time. ;)
https://coronarenderer.freshdesk.com/support/solutions/articles/5000516191

[Yehat]

Why would you want to use glass here? Generally blending refractive materials is not a good idea.

That is because i have a piece of material. There is a thin layer of polish upon wood. So i decided to do it with glass.

[maru]

When you are blending two or more materials, and one of them is refractive, the overall result will also get refractive (transparent).

[Yehat]

Thanks, i keep it in mind. That is why we want a shellac mode ))

Another (brute-force) way is to do a copy of geometry in the same place with shell modifier and glass material.