Normal Map Issues

AllieMunro · Dec 2011

Hey everyone, been having some issues practicing a new pipeline for modeling. I running through each stages to make sure they will all work smoothly.
Pipeline is as follows
Sculpt Zbrush
Retopolgize in Topogun
Unwrap Low rez in Deep UV
Bake Maps in Xnormal (create cage in 3DS Max)
Texture Low rez model in Mari

I am at the stage where I need to crate some normals however I am running into somewierd issues. I could simply photoshop them out but I'd like to figure out what it is. Can anyone pin point why I get this errors? The ones circled on the map should not be there.

http://imageshack.us/photo/my-images/507/normalissue.png/

Dismembered · Dec 2011

I can't exactly tell what is wrong with your normals in that picture, perhaps post a picture with the low res and the normal map applied, or take a higher res pic?

But it looks like your cage is to far from your model, it should only just cover it.

AllieMunro · Dec 2011

The cage is just barely big enough to cover the highrez model, here is a render of the low rez with the normals applied. http://imageshack.us/photo/my-images/831/normals2.png/

I have tried using Xnormal without the cage using the raytrace measuring tool but I get the same results. That line near the barrel is very frustrating, the trigger gaurd to looks way off.

Ghostscape · Dec 2011

Is the low poly you're baking from the same low poly there? Those lines look like areas where you had normal splits connected in the UVs, which fucks up the tangents there.

make sure your low poly that you baked onto is 1 solid mesh and try making each UV island one solid smoothing group (you can just make you gun one smoothing group to test this easily)

.polygon · Dec 2011

Normal Map Issues

Replies