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Participant
April 29, 2023
Answered

During baking, each UV has different normal directions

  • April 29, 2023
  • 1 reply
  • 1909 views

Hi, I had a problem while baking. Despite the fact that in Blender the directions of the normals are the same for each UV tile in Substance painter, they have a different direction.

Perhaps I am doing something wrong, maybe someone will tell you how to solve this problem.

Thank you

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Correct answer Cyril Dellenbach

Hi @severusec,

 

A seam in the normal map doesn't mean there's a seam in the material and this is in fact the expected behavior. This is due to how the normal map works and the UV shells orientation.

 

The map works in a tangent space (the UVs) meaning that the blue parts (for example) will appear from down to top, regardless of the UV shells orientation. Therefore, if the shells are not all well oriented in your UV Tile, seams will be visible in the normal map, but it won't impact the look of the material.

 

 

 

Keep me updated on your issue.

 

Best regards,

 

1 reply

Cyril Dellenbach
Community Manager
Cyril DellenbachCommunity ManagerCorrect answer
Community Manager
May 2, 2023

Hi @severusec,

 

A seam in the normal map doesn't mean there's a seam in the material and this is in fact the expected behavior. This is due to how the normal map works and the UV shells orientation.

 

The map works in a tangent space (the UVs) meaning that the blue parts (for example) will appear from down to top, regardless of the UV shells orientation. Therefore, if the shells are not all well oriented in your UV Tile, seams will be visible in the normal map, but it won't impact the look of the material.

 

 

 

Keep me updated on your issue.

 

Best regards,

 

Cyril Dellenbach (Micro) | QA Support Artist | Adobe
severusecAuthor
Participant
May 2, 2023

Thank you for your response, and I agree that overall texture is not affected other than the Thickness map I use for subsurface scattering in Blender (Inverted Thickness map).
And I thought, because of this bake of the normal map, there are gaps in the seams.

 


By that, I thought I was wrong to bake the normals.