I made a color/ID mask, can I mask areas inside?

[Alejandro]

I have a model of an ancient wall with some symbols in it.
What I did was paint the symbols in a high contrast color (red) over a white background in Zbrush and baked the ID map.

So, now I need to paint the symbols in different colors, but when I create a color mask it maskes every symbol.

I mean, yeah, I get why that makes sense. But I was wondering if there's a way I can paint only a few symbols from that selection.

Also, since was such a complex structure that I would really like to avoid redoing the bake, it took about 6 hours :(

[BushPig]

so many diffrent ways you could handle this. zbrush decimate the hipoly model with decimation master this will speed your bake up 10 fold. assign polygroups to your hipoly model then export it with the FBX plugin and turn on export polygroups as mats.

Substance painter 2 just rebake the id map only and select polygroup/submesh id from color source menu or you could just paint on the mask it self to get what u want add a paint layer by rightclicking the mask then paint away. make a symbol alpha sheet in photoshop use the projection tool even use it as a mask or to paint onto the mask itself and another 101 ways you could do this in SP2 good luck...

[Alejandro]

Thanks for the reply.

I got another answer elsewhere that worked out pretty well:

"You need to paint some symbols green (just as an example), others in red, but only have a color ID mask for all symbols combined.

What you could do is create the green material, and the red material beneath it in the Layer stack. Apply a color selection effect to the mask of both materials and select the same ID map for both. Select the ID color of the symbols in both color selection effect properties.

Now, in the green material, right-click the mask and add a 'Paint' effect. Paint over all symbols that need to be in red color."

[BushPig]

its all the same crap :) like i said 101 ways but nice work still the best way would be polygroups or vertexpaint.