glass block the environement but not the object behind the glass!

[fraggle]

Hello,
I'm wondering what I'm doing wrong again!
I do have a plane with a glass material.
The scene has a Vray Dome with HDRI and a bitmap into the environment slot.
When the plane (glass) is hidden, the environment can be seen in the background.
When the plane (glass) is on the scene, the environment is very dark while the object behond the plane are behaving normally.

Thanks to let me know the trick to get the environment background render trough a glass material.

[Morbid Angel]

I think you need to have thickness in your glass...

[fraggle]

same with a box, 2 cm tick!
The environment have to be multiplied by 150, to be able to see it thought the glass! But, when the windows stop to have an open balcony, then with such a multiplier the environment turn white!

[fraggle]

I tried with a new scene and no problem.
I import such new scene into the one that give me trouble, including the new dome light, I make sure that the environment is the same, then again, the glass render black!
I Finally merge into a new scene the trouble one, and that fix the problem!