stretching on baked models

Moshbeast

Hi there i was wondering if one of you guys could explain something to me recently in university we have been working with baking and i ended up with a stretched normal map


if you look at the holes in the corners they are a bit weird since its suppose to be round... so i was wondering if you guys could tell me how that can be fixed but not just specific to this case but how i can avoid stretching when i bake something in general

thanks in advance

Jessica Dinh

How does your low poly look? Try chamfering all 90 degrees on your model, bake without cage, and see if you still have this problem.

cptSwing

It looks like you'll need to add support loops on the inside of the corners, in order to have the low poly's vertices cast relatively straight rays close to the high poly detail you're trying to bake down.

fatihG_

You could use smoothing groups (hard edges) but that means you have to separate the uv's as well.

Next

the best and imo only solution is to bake it with a cage...


http://wiki.polycount.com/NormalMap?highlight=%28%5CbCategoryTexturing%5Cb%29
follow this link and scroll down to: Solving Wavy Lines this is the problem u are facing with your holes.
i hope this helped cheers.

Moshbeast

ok so first of thx for all the help but it actually works now the down side is i have no idea why since as far as i can tell i didn't do anything different but I must have at some point i guess. so again thank you guys for the help ill try to recreate the mistake though since not knowing why is bugging me

Sean VanGorder

Read through this thread...

http://www.polycount.com/forum/showthread.php?t=81154

It should have all the info you need to fix your skewed normals. The simplest way to fix them would be to add support edges on your mesh.

Moshbeast

alright thx