Author Topic: Inconsistent Normal Distortion  (Read 1038 times)

I can't figure out why the normals for the ridges are wavy in some parts. but perfectly straight in other parts. The low poly is a consistent cylinder and the high poly has an even rotation of the ridge going all around it. Why would the top areas have distortion but the rest be correct?

I can only guess, you are projecting with avg normals, and you don't have the right topology to maintain the normals at the right angle for this kind of detail.
more about it here: http://polycount.com/discussion/81154/understanding-averaged-normals-and-ray-projection-who-put-waviness-in-my-normal-map#latest

and also: http://polycount.com/discussion/147227/skew-you-buddy-making-sense-of-skewed-normal-map-details/p1

It looks like I fixed it. I used the added some supporting edge loops as suggested in the articles and it looks like that fixed it. Thank you for the links.

This issue can also happen because of a different triangulation between your application and Substance Painter.
Don't forget your log file. It can be exported from the Help menu of the software.
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Froyok aka Fabrice Piquet, Technical Artist and Product Designer at Allegorithmic.