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[Solved] Normal Map Seams


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I've looked for a solution to this but haven't found one yet. I'm not sure if it's a bug or an error on my part so I hope someone can shed some light on it. Thanks!

If I import a normal map which was baked in Maya, this map looks fine. However, when I save and re-load the 3DCoat file the seams become apparent because the normal map has been modified. I'm guessing it's 3D Coat performing it's padding operation. But it seems the it's generating incorrect padding info for the a normal map somehow.

I'm using version 4.7.06 DX64







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51 minutes ago, Carlosan said:

Hi !

Please invert the green channel output when choosing Maya Normal Map.

You can invert the green channel in Photoshop.

Thanks for your suggestion, Carlosan. I am already using the import option to Invert the Green Channel using the Unity Preset.e.jpg


The Normal map looks good when I first import it into 3D Coat, Invert Green Channel is checked ON. Doing this there are no seams at all (as seen in Fig.1)a - Copy.jpg

Now when I save the 3D Coat document, then Close the document, then Re-Open the document the seems appear (as seen in Fig.2) 

Thanks again for taking the time to reply and offer your thoughts.


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15 hours ago, Andrew Shpagin said:

The problem may appear over seams over edges with split normals. On smooth edges it will not appear. There is trick to avoid it. 

Import normalmap, then rename layer to Normalmap[ext]

I am thinking over better solution, but this one works.

Hi Andrew, thanks very much for the tip there. I actually found that 4.7.10 adds [EXT] to the end of the Normal Map Layer name when it's imported which has fixed my issue. :D

It's good because I don't want the external normal map layer to be touched by 3D coat, unless it's good touching! lol

I'll go back to the release version of 3D Coat and append [EXT] to the normal map layer I have imported and work from there. Thanks again. Big help!

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