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Old 12-02-2008   #1
ushavit
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Join Date: Nov 2008
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Default Maya Blend shapes and normal map

Hi All,
This is a question about normal maps in Maya. After modeling a head in Maya I detailed it in ZBrush, created the normal map and applied it in Maya. All looks and works great. the normal maps are applied as tangent space normal.

I now model my blend shapes and I need to blend the normal maps as well (you know, a normal map for a smile is not the same as mouth open, etc..). Now, with bump maps that are applied as bump it is not a problem as I concatenate the bump maps to each other and control the Alpha gain or bump depth, however when a normal map is applied as tangent space normal, bump depth do nothing and alpha gain does nothing. So my question is how do we do that ?

I render with Mental Ray and work on Maya 2009.

Anyone has any idea ?
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Old 01-08-2009   #2
KunAda
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Default

Bump!
I would like to know this as well
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Old 07-17-2009   #3
Callmedude
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Default Bump

here here. I would like to know as well.
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Old 01-25-2010   #4
Howii
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Bumpy
I am trying to do figure this out to, anyone got an idea? Would be very appreciated
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Old 02-06-2010   #5
primary
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Default re: Maya Blend shapes and normal map

Hello,



Ok i will try to find something about this and if i will get any any information about this then i will tell you. i will tell others also about it so that may be they are able to find any thing about that.


thanks!!
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Old 04-20-2010   #6
clarecg
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Default You could try this

Hi Ushavit,

I've just used Maya 2008 and zBrush 3.5 R3 to generate my normal maps and used them quite successfully after messing around with the normal map in P/Shop. I hope Andrew doesn't mind me linking to his site but it helps explain some technical stuff as to how Normal Maps work and why we couldn't get the desired results when trying to adjust the bump settings for tangent space normals.
zBrush 3.5 doesn't have as many options as zMapper had in zBrush 3.1 but that can be worked around.

http://www.andrewklein.net/bh/differencemapping.html

Good luck. If you find another way, please post it..!
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