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

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


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

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:

That ought to work for you.

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.

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

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!

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