CGTalk - normal map problem

errorbg

04-29-2009, 05:13 PM

hi frm me furst
ok lets explain what is my problem i made 1 simple mesh in maya and then start sculpting in mudbox but forgot to made uvs to the low poly .... then i finish my high poly .. made uvs to low poly and import it to low poly of my sculpt mesh(lvl0)all fine for now but then i play normal map in maya didnt have all bulk so i made uvs to lvl1 of my sculted mesh but i cant import uv from it to my highlvl can some1 help me ?pls i spend alot time with different trys and to read different forums but nothing help for now pls help me
can chack some pic here http://entertainment.webshots.com/album/571548036LiQHRV :banghead:

musashidan

04-30-2009, 09:24 AM

The extract map function in Mudbox is completely straightforward.Just make sure that your UV's adhere to all the prerequisites and there should be no problems whatsoever.

cgbeige

04-30-2009, 02:54 PM

you can also use the Transfer Maps option in Maya if you have to. It's slow and requires a ton of RAM though so you'd need a 64-bit version if your high-poly scene is over a few million polygons.

errorbg

05-01-2009, 04:47 PM

i dont realy have problem with extracting of the map http://entertainment.webshots.com/photo/2146948350105101328fNJFxu the problem is in this that i can replace the new UVs over old one and i dont know why .. this is the rander i got in maya http://entertainment.webshots.com/photo/2581695350105101328wackpx

musashidan can u be a little much specific what exactly i have to do .

thnx for replays

abcxyzboy

05-04-2009, 07:59 PM

I am not sure if this answers your question but it may. I have found that you do not need to have the same uvs on your high and low res models when extracting in Mudbox, there can even be diffent uv spacing (eg u0 to u3 vers u0 to u1). So you should be able to extract a good displacement map for your low res model by using your high res model with the poor uvs. Simply load the low rez model into the highrez models scene and select it as the low rez target.

oglu

05-04-2009, 08:28 PM

there is no need for uvs on the highres mesh...
not in maya and not in mud...

import both and bake...

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05-04-2009, 08:28 PM

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