3D normal map bakeing problems

SxitG

Hello,
I want to bake my HP on my LP in Marmoset Toolbag 3. But I always get a problem.
The problem is that my HP bolts get baked over my LP bolts even when my LP bolt is bigger then my HP bolt.




Red is the HP bolt and green is my LP bolt. As you can see my LP bolt is bigger then my HP bolt.


This happends on each of the 40 bolts.

Kanni3d

Are you matching by name, keeping the bolt hp and bolt lp's names unique from anything else?

SxitG

Kanni3d said:

Are you matching by name, keeping the bolt hp and bolt lp's names unique from anything else?

I tried to bake it merged with the full viking shield and I tried it to bake it in 2 bakeing groups (1 with the shield and 1 only with the bolts) but I got this issue in both trys

Joopson

My guess would be skewing?

EQ explains it well here. Marmoset has some simple ways of fixing it as well, if it turns out to be the issue.

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

FrankPolygon

The shape of the low poly geometry causes it to catch rays from underlying surfaces and the pixelated radial artifacts around the base of the shape are caused by the parts of the high poly floater that curve away from the low poly shape.

It's generally considered best practice to add a flange (that's parallel to the underlying surface) around the base of the floating geometry. This will provide a smooth shape transition that always faces towards the inside of the low poly mesh.

Here's a comparison of a high poly floater that curves inwards at the bottom and another that curves outwards towards the inside of the low poly mesh.

In some cases it may make sense to create a low poly mesh that follows the inward curvature of the high poly where it sits on other surfaces but in this case it would only add unnecessary complexity without offering any significant quality improvements.

It also looks like there's some normal artifacts around the perimeter of the shield that may be caused by hard edges that don't have matching UV splits. Here's a direct link to the Toolbag baking tutorial by Joe Wilson. It covers common baking artifacts and how to resolve the underlying issues that cause them: https://marmoset.co/posts/toolbag-baking-tutorial/

SxitG

Joopson said:

My guess would be skewing?

EQ explains it well here. Marmoset has some simple ways of fixing it as well, if it turns out to be the issue.

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

I tried to paint the skew. But it never gets away to 100%