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View Full Version : how to using 2 bump map together??


goon_creative
08-05-2009, 03:47 AM
i have a problem, is it bump map can using together? is make me crazy, how come one bump map is already outnormal> normal camera, another one bump map still can link to this bump like, i try many time, can you all tell why?? thanks you!!
http://bbs.cgpower.com.cn/upload/2009/02/04/13603261.jpg

Kabab
08-05-2009, 03:51 AM
Multiply or add your ramp and fractal then feed that into the bump node...

goon_creative
08-05-2009, 03:54 AM
Multiply or add your ramp and fractal then feed that into the bump node...

em.....very sorry...i don't understand, can u give a a tutorials? whatever thanks for help!!

abbas32717
08-05-2009, 04:15 AM
Connect another file or texture in attribute editor -> color gain of another bump map and or use layer texture on in photoshop or... :bounce:

Kabab
08-05-2009, 04:24 AM
This should do the trick...

goon_creative
08-05-2009, 05:59 AM
This should do the trick...

is good, thanks you for teaching, may i have something to ask u? y we need to add "luminance", what meaning that?

Kabab
08-05-2009, 01:29 PM
Its because the fractal and the ramp are outping RGB so when you connect it to the multiply/divide node it fills the x,y,z slots which isn't needed...

Your bumps are black and white anyway so by putting it through the luminance node you get a single output instead of 3... So you only have to do the function on 2 numbers not 6 and that way it maps directly to your bump node... I hope that made sense...

Another easier way you could this is just use the layered texture node which basically does the same thing i did...

Not sure why i didn't think of that first.

avak
08-05-2009, 02:05 PM
I was looking for mixing normal map and bump map method may be this thread helps:
http://forums.cgsociety.org/showthread.php?f=87&t=792960

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