Objektmask behind glass not present

[wsiew]

Hi guys,
i need a mask for an object/material behind glass. But i don’t get a mask. I’ve made an object (Cube). Then i’ve given a Corona Render Tag with an object buffer to this object. I’ve made e simple material and made enable „Propagate masks > Through refraction“. In the Multi pass i’ve made a new mask object and given the same object buffer ID of my object (in this case 4) and also i’ve given it  teh material ID of my new material (in this case 7). I made enable „Allow propagation trough refelction/refraction“.
But i don’t get a mask. What is wrong?
Greetings from  Wolfgang

My Sys-Config: MacBook pro 19 (late 2019), Catalina (10.15.7), C4D R21, Corona 7 Hotfix 2

[mmarcotic]

Hello,

almost there; The "Propagate Masks" material setting should be set to "Through Refraction" on the glass material, not on the cube material. ('Propagates' for us means that this material generates other object/material masks on its surface)

Thanks,
Jan

[wsiew]

Ah! Now I understand.
I have now set this with the material and everything is fine.
Many thanks and greetings
Wolfgang