alpha channel problem

[thomes]

hello,

i have the problem that i can see the object in the alpha channel. there is nothing declared in properties or materials as i can see. default iflowers material
the alpha channel is ok if i disable 3dsmax´s "force 2-sided"

any explanation of this behaviour? i have this "force 2-sided" enabled since 15 years...no need for this to enable?

thanks for help
thomes

max2016 sp1 vray 3-30-05

[Zdravko.Keremidchiev]

Can you attach this scene or send it to support?

[thomes]

reduced it to the minimum...

[Zdravko.Keremidchiev]

I manage to reproduce the issue. It seems to be due to the usage of VRay2Sided + Multi/Sub-Object material when Force 2-sided option is enable and you look to the back side of the face.
We need to investigate that issue further.