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Seam visible on every face | Substance 3D bakers

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  8. Common issues
    1. Aliasing on UV Seams
    2. Baker output is fully black or empty
    3. Baking failed with Color Map from Mesh
    4. Black shading cross are visible on the mesh surface
    5. Mesh parts bleed between each other
    6. Normal map has strange colorful gradients
    7. Normal texture looks faceted
    8. Seams are visible after baking a normal texture
    9. Seam visible on every face
    10. Texture baked outside of Substance software looks incorrect

Seam visible on every face

Alert:

Issue

A seam is visible on a few edges of the geometry even if there are no UV seams present :


Note:

Explanation

If not using a cage, the Baking process will launch rays in the direction of the vertex normals of the low-poly mesh. If each vertex normals are split (meaning each face doesn't share the same vertex normals as the neighbor face) the rays will not be send in the same direction on the edges. This result in split because the information on each side of the edges is different.

This issue is also exacerbated by aliasing, as explained in this page.

Note:

Solution

Only two solutions are possible here :

  • Use a cage to control the ray direction instead of letting the baker compute it from the low-poly geometry.
  • Merge the vertex normals of the low-poly mesh together (soften them / apply a common smoothing group).

 Adobe

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