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View Full Version : Multiply with bolean vs merge


Rips
10-12-2011, 12:12 PM
Hi,

Does anyone know what causes the multiply of the merge to produce slightly different values than the multiply of the bolean? I came across the issue when I'm dividing my lighting pass with my diffuse pass to create a Raw lighting pass.

After doing the dividing, the result doesn't multiply properly back together using the merge, while it does using channelbolean.

http://i.imgur.com/mCzxe.png

The merge produces a very subtle halo effect.

pingking
10-15-2011, 12:55 PM
i would guess its somehting with the alpha channel, do ypu multiply also the alpha channel in the BOL?

Rips
10-15-2011, 02:34 PM
No, I've chosen "Do nothing" for the alpha, but I'm also excluding the Alpha channel in the common control of the merge node.