Unknown troubles with the seams on Normal map

Morgul

Hi everyone!
First of all, I would like to excuse for my not very good English, but I'll try my best.

I'll try to describe the problem:
I made high polygonal model, than I created low polygonal model for it. Than, of course, I made UVs.
After all this standard work, I began to prepare model for baking Normal map. The model has central symmetry, so, I made a copy of my low poly model and took all UVs, which had overlapping with symmetrical side to a free place and scaled them to a point. So, all UVs became unique.
The main goal of this preparations was to keep correct normals in the middle, to avoid seams.
I decided to use xNormal and the result was good - as I saw it on render in 3ds max. But when I imported model in the Marmoset Toolbag and added my normal map - I've got strange seam on the model - You may see it on the screenshot.
Does anyone knows how to remove it, or, maybe I made some mistakes?
Thanks!

Froyok

Are your UVs overlapping on the same Uv range ?
Looks like a baking problem (with xNormal) than a render problem inside marmoset.
Try to move you flipped UV on the next UV range before the baking.

Mark Dygert

Are all of your UV shell's stacked inside the renderable area? Or are the overlapping pieces offset one tile to the right, left, up or down?

I haven't really used Marmoset that much but it could be that the xNormal baking settings could be incorrectly set and its out of sync with Marmoset?

Earthquake posting the right answer/questions in 3... 2... ha!

Scruples

I think this is actually Marmoset problem with UV shells laying directly ontop eachother...

EarthQuake wrote: »

Dont bother with any of that, just offset the mirrored side of the uvs 1 unit out of the 0-1 uv space, it will bake perfect and display perfect, with no need to worry about multiple copies of the mesh etc.

Morgul

Thanks to everyone, for advices, but the reason was much more simple. When I exported the model in obj format, I forgot to switch off the check box "optimize: vertex, normals, texture-coords" - that was the reason why my correct normal map was shown incorrect.
Here is the final picture of my work, as you can see - there is no more any troubles with the normal map: