View Full Version : multi layer surfacing - I need help!


gawain
10 October 2004, 04:26 PM
Hi all,
I'm skinning my dragon and try to use an apha map to blend, ina the bump channel, an image bump with a procedural one, but it doesn't seem to work. LW7.
Can anyone tell me where i am wrong?
the setup in surface editor - bump channel - is
- grayscale image for alpha - blending mode: alpha
- grayscale image for hand made bump - blending mode: normal
- procedural veins map - blending mode: normal

The result is that the procedural veins map can be seen also where the alpha map tells him to disappear

thanx!:eek:

LFGabel
10 October 2004, 05:12 PM
Alpha channels affect only the layer directly above it in the stack.

uncommongrafx
10 October 2004, 05:24 PM
Move the alpha to the middle of the pack.

Now I know why I didn't like my answer.
For what you sound like you want to do, copy the alpha and invert it for the second mapping layer.

Also, Alpha affect below; displacements that above.
To that end, your layers would be:
alpha
map1
alpha-inverted
map2

That ought to work for you.

uncon
10 October 2004, 05:24 PM
above? I thought they affected the one below.

I would suggest seeing if you can work it out in a visible layer first. Use the viper window until you see that the alpha chanel is working properly and then duplicate the stack in the bump layer.

LFGabel
10 October 2004, 07:49 PM
Jeez, my bad... yes below.

gawain
10 October 2004, 08:23 AM
thank you all!

This alpha map feature drives me mad every time, probably because i don't use it often (and cause it it not so user-friendly...)
Anyway: this is the way it worked after some try and thanx to your suggestions


Alpha map: black spot where you want that *map is shown - blending mode: alpha
map that provides basic covering for the surface (the procedural one just in my case) - blending mode: normal
*map that you want to be shown as an exception via alpha map - blending mode: normal
Hope it helps - english is not my mother tongue :)
Thanx again!
G.

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