Bake issues

rocneasta

A simple task as a normal bake is giving me issues. If anyone knows what would be the cause of them, please let me know

Simple model - speakers - unwrapped box over it for low poly - normal is looking ok, but there is a huge distortion

when doing with mental ray to render texture (he uses raytrace) I just needed to unwrap low poly and I got nice but as aforesaid distorted normal map

tried to unwrap the high poly and low poly in the most matching way - did it with scanline render and match UVW's method - it gave me a perfect result (ignore poor UVW's)

Does this mean that every high poly should be unwrapped in the same way (same seams) as the low poly prior to bake - and then bake it with scanline. I know people don't do it in this way, but perhaps I'm the only one that should

Any idea why this is happening?

WarrenM

First, you don't need to unwrap the high poly. Unless you plan to paint on it or something, that doesn't help you.

Secondly, can we get a look at the wireframes? The distortion is likely coming from the fact that you don't have enough geo on the low poly ... adding a vertex in the center of each speaker would allow for a better projection, You can remove the extra verts later, once the map is baked...

ZacD

@ WarrenM, I would only add and remove geometry if you are going to use handplane, otherwise it will cause shading errors.

The distortion can also be caused by the highpoly/cage being too different from the low poly. You should post the models.

rocneasta

Thank you for a quick reply, attaching the model wireframe screenshot. if you need the models as well i can do that as well. the highpoly is shown without the turbosmooth itterations

desktoppirate

Add some supporting edges on the low poly. currently the averaged cage is pulling the details out towards the places where 2 differently angled edges meet.



Hope I got that right ;p

rocneasta

I salute you sir. That's absolutely right, and makes perfect sense now.

I did at the end have to flip green (Y) in the materials, cause I was getting things going in rather than going out. Need to find out if this is a common thing or my mistake

I've rendered the end result 136k poly's high poly (turbosmooth on 3) and low poly 14poly 28 tris

Karaoke_Warrior

Can we see what your projection cage looks like?

Nevermind: Solved.

rocneasta

@karaoke_warrior - thanks for trying to help. indeed solved

happy^^

Again thanks all!