Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: dzdesign on 2024-04-24, 11:06:45

Title: Reflections on car paint
Post by: dzdesign on 2024-04-24, 11:06:45

Hi,
I'm trying to render some car models for paint options/swatches etc etc.

But the lights reflections are coming out a bit weird.

Attached are images and closeups.

Any idea why this would be?

Thank Yu
Dimitris

Title: Re: Reflections on car paint
Post by: romullus on 2024-04-24, 11:59:02

I might be wrong, but it looks that you are using normal map for simulating the flakes, so the broken reflections kinda expected.

Title: Re: Reflections on car paint
Post by: Aram Avetisyan on 2024-04-24, 23:58:17

It looks like bump on the clearcot (if used), which is similar to the base patterns.
If you are using Clearcoat, disable it bump/normal effect and see if the results are better.

Usually everything should be investigated - the model first of all. If everything is fine with it, check the material and UVs.

Title: Re: Reflections on car paint
Post by: maru on 2024-04-25, 13:56:00

It could also be an issue with the model itself. Does it look correct if you apply a solid, non-reflective material to it?
It looks as if it had no smoothing groups. If that's the case, you can fix that by applying a "Smooth" modifier to it, then enabling the "Auto Smooth" option and cranking the Threshold value all the way up to 180.