Several materials - To one UV map

[KimGnome]

I created some models in Maya, UV mapped it, added shaders to different models and then exported it as an fbx.

Then I Opened it in Substance Painter (SP), baked the maps, did some painting etc.

Then I exportet the maps in the format that I need.

Now, here is my problem.

The model has 1 UV map, but for each shader, SP create one material with its own UV map.
It does not just add the materails for one model, on the area on the UV map, where that moel is placed, but instead it fills out the rest of the UV map for each shader.

So I end up having to cut and paste it together in photoshop afterwards, to create one map for one shader, so I can use the ONE shader for the whole 3D model (in this case, a room).

Am I missign some feature in SP? or is there no way to paint several models at once in SP, add diffrent materials to each model etc. and then have it spit it out one combined UV map?

I have attached 2 images, the one is what substance spits out, the other is an exaple of what I would like to end up with.

[Cyril Dellenbach]

Hello Kim,

Thanks for the message.

This is indeed the expected behavior. Substance 3D Painter divides the project in several Texture sets and a Texture set is defined by a Material ID. Each time Substance 3D Painter finds a new Material ID, it will create a new Texture set.

If you want to paint everything on a single Texture set, the model simply needs to have a single material applied.

Best regards,

[KimGnome]

Hi, thanks for the reply 🙂

The problem is, that if I only add one sahder to my model, when I then add any material in substance, it floods the whole model with that material.

Let us take an exaple:
I have a door, around it is a door panel, and it has a handle.

I want the door to be white, the panel green and the handle a metal color.
If I send this complete model into SP with only one shader, then when I want to add a white material to that door, the handle and the panel also gets that white material. 

Perhaps I am just to new to substance, and should watch more tutorials, but I just can´t seam to find a solution (I might not have looked enough).
Anyhow, enough bad excuses, and I really hope you can send me in the right direction, so I can finally learn how to do this 😄
Kind regards,
Kim

[KimGnome · Accepted solution]

Found out what I was missing:

I just have to add masks, and mask out the areas where I want to add a new material 😄