the material and the face behind the glass is forward facing,that was the problem with bumps with gravel material.
But i can get rid of the dark shadow my glass is produceing. Should I make my glass with one plane,or two parallel?

Hey guys,
I have a different kind of problem now. If anyone has any idea what's the problem,please help! My glass isnt clear enough,and make too dark shadows...

Guys,found out what the problem was.. It was the gravel material,and im not 100% sure,but i think i applied it on the back side of plane(gray side).. anyways,if anyone can help me get this glass a bit more clear,that would be great!

Hey guys,

I have a problem when i render my model. I have a fense with glass,and behind it a gravel ground. Gravel have bump and displacement maps. And glass panels in fense are actually two parallel planes. The problem is,vray (ver 1.49.01), wont render gravel behind glass. It renders shadows,but not gravel itself. Can anyone help?
Thanks!