Displacement bug with specular mat (resolved)

[visionmaster2]

Hello,

i have a strange probleme when i put a displacement map on this object with specular mat.
the back head become transparent.
it doesnt append with a glossy or standard mat.

Any idea please ?

M.°

Octane 3.03.4. -4.21

[paride4331]

Hi visionmaster2,
could you kindly test your scene with v3.05-4.30 version?
https://render.otoy.com/customerdownloa ... -_4.30.exe
Let me know if you have solved your issue.
Regards
Paride

[visionmaster2]

Thank you Paride4331 but it doesnt work .

[visionmaster2]

Hello,

i deleted the uvs in zbrush.
then uvmaster and reexport the obj and maps.
everithing works now.

i really dont understand why it bug with a specular map.

Thank you Parride4331

[paride4331]

Hi visionmaster2,
your issue is not dependent on specular material.
It is an issue about normals in your 3D model.
It also happens with glossy or diffuse material, you can check it in geometric normal layer.
Regards
Paride

[visionmaster2]

Thank you Parride4331

sorry to have stollen your time with my problem.

Thank you for the explanation !!
Everthing is clear now

M.°