Map with Alpha channel in Arnold

[ingmar.wittmann]

I want to use a decal map with alpha channel on my physical material with Arnold.
In Mental Ray i did this with the  mix map and the alpha channel in the mix channel.
The old mix map is gone. The new arnold RGBA mix map doesnt not get the alpha channel from the old bitmap map parameters.

It works when i extract the alpha channel and use it as a normal black/white image in the mix channel. It´s not working with a rgba image in the mix channel and select to use alpha only.

PS: Where is the composite map?

[ACCCC · Accepted solution]

Not sure what you mean, it works fine for me, diffuse = input 1, decal diffuse = input 2 and a copy of your decal diffuse set to Alpha as Gray in the mix channel

[ingmar.wittmann]

sorry, it works , i missed to check alpha as grey