on top, i would suggest you straighten your uvs more. it is not the cause of your problem, but you lose a ton of texture space with these curved uvs. on top even with 3d painting such a substance painter, some strokes are still easier to do in 2d space and then the curved uvs are way harder to edit. Also they are harder to create lods with
looks like you are having bitangent problem. be sure to export the low poly properly. btw, those uvs are not good. you should keep it straight as mush as possible with this kind of object for 2 reasons: -use less spece -avoid aliasing
Replies
http://wiki.polycount.com/wiki/Normal_Map_Technical_Details#Synched_Workflow
How was the normal map created? What are you using to view the model?
on top, i would suggest you straighten your uvs more. it is not the cause of your problem, but you lose a ton of texture space with these curved uvs. on top even with 3d painting such a substance painter, some strokes are still easier to do in 2d space and then the curved uvs are way harder to edit.
Also they are harder to create lods with
long story short
clean up your uvs
be sure to export the low poly properly.
btw, those uvs are not good. you should keep it straight as mush as possible with this kind of object for 2 reasons:
-use less spece
-avoid aliasing