Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Billabong on 2023-05-01, 19:53:31

Title: decals showing up in reflect pass
Post by: Billabong on 2023-05-01, 19:53:31

I have two decals on the side of this truck, with the exact same settings as the base paint layer. So why is it that the decals show in the reflect pass? Shouldn't the whole side of the truck look the same? I shouldn't be able to see the decals in the reflect.

 I'm using the Corona decals for this.

 Thank you for any help.

 -B

Title: Re: decals showing up in reflect pass
Post by: Avi on 2023-05-02, 10:41:31

Hi,

if you don't use a decal and just directly use this texture in your base paint layer, does the reflect pass look any different?

Title: Re: decals showing up in reflect pass
Post by: Billabong on 2023-05-02, 14:51:46

No, its showing the exact the same thing.

Title: Re: decals showing up in reflect pass
Post by: Billabong on 2023-05-02, 15:12:33

Here is a quick IR render showing the reflect pass. This has a Corona Layered material, with the base paint duplicated twice for layer 1 and 2 for the decals. Its giving me the exact same results.

Title: Re: decals showing up in reflect pass
Post by: Billabong on 2023-05-04, 21:17:42

So, I'm guessing this is some sort of bug possibly?

Title: Re: decals showing up in reflect pass
Post by: Avi on 2023-05-05, 06:58:52

Hi,

Apologies for the late response. If I understand correctly, you're receiving the same reflection pass whether you're using a decal or directly plugging in the texture to the material's diffuse slot and applying the material to the object.

I'd like to know, if the reflection pass is the same for both methods, what is the expected result you're hoping to achieve? and What is the bug?

Title: Re: decals showing up in reflect pass
Post by: romullus on 2023-05-05, 11:17:47

Is your material's glossiness/roughness mapped?

Title: Re: decals showing up in reflect pass
Post by: Billabong on 2023-05-05, 16:43:55

@Avi,  No apologies necessary. The decal Has all the same settings as the base paint layer. The only difference is there is a decal in the diffuse. So shouldn't the reflect pass look the same on the entire side of the truck? What I mean is. I shouldnt be able to see the decal cutout in the reflect pass or am I mistaken?

@romullus, There are no maps in my roughness slots.

 Thanks guys for taking the time to help.

 -B

Title: Re: decals showing up in reflect pass
Post by: TomG on 2023-05-05, 17:20:24

The Clear Coat, which afaik affects the reflection pass because it is reflection (haven't tested this but I would imagine it appears in the reflection pass), has different absorption values in each material (one is darker than the other). If those are made to match, do you then get an identical result from both materials?

Title: Re: decals showing up in reflect pass
Post by: Billabong on 2023-05-05, 17:39:23

Tom and everyone who has replied. I cannot apologize enough. That was exactly my problem. I cant believe I didn't see that. I am so sorry and thank you so much.

Title: Re: decals showing up in reflect pass
Post by: TomG on 2023-05-05, 17:54:57

No need for an apology, that's what the forums are here for :) Sometimes we just can't see the wood for the trees and it takes asking others to find out what is going on. Never be afraid to ask questions or share problems - and meantime, glad we have it tracked down!