AO slot - Soft8Soft

This topic has 6 replies, 3 voices, and was last updated 1 year, 9 months ago by kdv.

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2019-02-19 at 11:31 am #11533

karonte
Customer

Hi all, is there tip to load AO image in 3dsmax material? Sometimes I create my geometry inside 3dsmax and do textures in Substance Painter.PBR output is albedo+metal+rough+normal + AO channel.
Regards

MR

2019-02-19 at 1:10 pm #11534

Mikhail Luzyanin
Staff

It’s little tricky. I made an example for you. A Pure_Black material for imitation of ao.

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Co-founder and lead graphics specialist at Soft8Soft.

2019-02-19 at 6:07 pm #11553

karonte
Customer

Thanks for the quick answer!
It’a compositing…ok. But it’s not what i would like…I thought there was an AO channel …:(

AO channel is important because if I want, for example, to change Albedo(color or texture) “realtime” by code, the AO channel will remain the same. Like standard PBR materials in substance, unity( in attachment), ec… Can i Put AO with code?

MR

2019-02-19 at 6:13 pm #11557

Mikhail Luzyanin
Staff

karonte wrote:

Thanks for the quick answer!
It’a compositing…ok. But it’s not what i would like…I thought there was an AO channel …:(

AO channel is important because if I want, for example, to change Albedo(color or texture) “realtime” by code, the AO channel will remain the same. Like standard PBR materials in substance, unity( in attachment), ec…

As you mentioned the Verge3D engine based on Autodesk Phisical Material, so only they can add or remove any input. But you can use GTLF compatible material then you need to connect your AO to Base Weight Map input of the material and set checkbox
GLTF 2.0 Compatible on each material, but it has a lot of restriction. I can’t understand whay you can’t change color of the Albedo or the texture by code with the solution I proposed you before?

Co-founder and lead graphics specialist at Soft8Soft.

2019-02-20 at 8:14 am #11573

karonte
Customer

YESS IT WORKS!! I thought that 3dsmax materials are “baked” AO+Diffuse. With your trick, I can do what I want… but, what about performance? Here I have 2 materials blended with textures and not 1 material with an Ao texture(as my previous screenshot from Unity). Anyway, this can help for now. Many thanks.

MR

2019-02-20 at 8:43 am #11577

Mikhail Luzyanin
Staff

karonte wrote:

With your trick, I can do what I want… but, what about performance? Here I have 2 materials blended with textures and not 1 material with an Ao texture(as my previous screenshot from Unity).

I think there’s no such a big difference.

Co-founder and lead graphics specialist at Soft8Soft.

2023-03-18 at 9:09 am #61145

kdv
Participant

AO maps can be mixed with diffuse maps via color multiplication (in any 3D editor). No additional shaders are needed.

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