VrayBackground appear totally Black

[cyrylmaison]

Hello guys,

 

I have a little problem on my last project, I add a VrayHdri in my environment and effect and I add a VrayBackground in renderpass for separate my beauty and my background, I don't forget to set the Affect channels parameter for both Reflection and Refraction to All channelsfor my Glass material at the windows.

 

My second problem is my renderpass for my reflection appear too noisy at the level of my glass material, I use 3dsmax 2016 and Vray 3.4 so I don't use the local subdiv for my light and my material, and on my project I have just 1 HDRI for the lighting.

 

 

Thanks guys for help me and sorry for my english.