Hi all blenderhead, i always find painfull to texture something with several image textures with alpha (combine them through math nodes...) so i made this little nodetree to do that in an easier way !
In the blend, you have two nodetrees (french and english)
To use it, just plug the right input (like in the blend) to the right socket, and set your opacities slider up. They go from -1 to 1, in order to do some kind of boolean operation directly on texture
The node output a simple diffuse shader for quick simple use, color channel and alpha channel separately to make more complex materials
Enjoy !
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