opacity cut out problem

[ileste]

I  have two surfaces one on each other the top one is slightly moved up.
I use two material different with displacement that's why layered material is no use.
When  apply material with opacity map on the top surface the opacity don't make the material completely opaque cut out, the problem is on that material I turned on refraction, without refraction is ok.
How to solve this?
Is refraction settings override opacity?
I tried to put the same map in refraction color, and opacity color no success.
I only success when I turned thin refraction or IOR 1 but I need IOR to be 1.33 to refract to not be air :D

[maru]

Hi, I am sorry, but I do not understand your description. Could you add screenshots or sample renders so that we could understand what you are trying to achieve, and what is happening?
I don't see any point in using opacity and refraction at the same time, but maybe I just don't understand the purpose.

[ileste]

I have map for bubbles and need to be on some places and need to be refractive also, I know the layered material I can solve this but because I will use displacement on both materials I use two surfaces.
Look on the pic when I have simple diffuse material with opacity material(on the left) on the top surface the bottom look ok, but when I add refractive 0.5 on the material with opacity map on the top surface, the bottom surface doesn't look like before(on the right) it's like the top surface is refractive all around not only on the places where the opacity map show where the bubbles are.

[romullus]

Do you use absorption distance >0 by any chance?

[ileste]

On the material on the top no the absorption distance is 0, on the material on the bottom the purple yes is sss.

[maru]

It's probably because it uses transparent shadows. Try checking the "caustics" option in the bubbles material.