Oil Drum

Anchuelo

Hello!

How can I improve the normalmap? Must I modify the geometry? The tessellations to work in Mudbox is ok?

LowPoly: 574 faces
HighPoly: 10440 faces

NORMALMAP: 2048px

thanks!!




This is very pixelated




LowPoly




HighPoly




Inside View



UV Snapshot

EarthQuake

A. Let the normal map do the work. Do not model very fine details or ridges in your lowpoly, this is detail a normal map can easily fake. Remove the small inset on top/bottom(flatten it out) and delete the two cylindrical shapes on top.

B. Whenever you have hard edges, you also need to split up your uv groups, or else you will get seam artifacts like you have on those small cylinders

C. You can't overlay your uvs like that and expect it to work, you need unique UV space for normal maps.

In addition to that, if you're going to have details like this as separate mesh chunks, you need to "explode bake" them as to avoid ray intersections. In the case, simply merging them in with the main mesh would be easier.

Anchuelo

EarthQuake wrote: »

A. Let the normal map do the work. Do not model very fine details or ridges in your lowpoly, this is detail a normal map can easily fake. Remove the small inset on top/bottom(flatten it out) and delete the two cylindrical shapes on top.

B. Whenever you have hard edges, you also need to split up your uv groups, or else you will get seam artifacts like you have on those small cylinders

C. You can't overlay your uvs like that and expect it to work, you need unique UV space for normal maps.

In addition to that, if you're going to have details like this as separate mesh chunks, you need to "explode bake" them as to avoid ray intersections. In the case, simply merging them in with the main mesh would be easier.

Hi! Here my modifications

Lowpoly: 352 faces
Highpoly: 15219 faces








LOWPOLY + NORMALMAP







The right part of the internal circle is not very good, why?






Thank you very much EarthQuake.

Steppenwolf

Make another bake without cage. That should give you a clean bake for the small rings on top. Cut them out in photoshop and combine with your cage bake normal.

Don't know if ther's a better method but that's what i do.

jrlogan

Make sure when you export the low/high polys (or Render to texture... or however you're doing it), that they're centered to the origin and lined up correctly.

Your sixth pic down looks like your low poly is slightly offset to your high poly when you bake (maybe slightly rotated?!) which would cause the distortion.

Clark Coots

you can optimize your low poly alittle more on the top of the cylinder by deleting the vertex in the middle and just connecting the outter verts to eachother so you have bunch of parallel edges