vray matte shadow material and transparent shadows

[d7man2000]

I don't get it.

 

I made a ground a matte material so it accepts only shadows and is alpha

 

but

 

when I render I get transparent shadows in Alpha Channel so in Photoshop they are invisible despite that they are visible in a render

 

my settings for matte ground material:

 

Matte Object

Alpha Contribution -1.0

Direct Light: Shadows and Affect Alpha

 

 

I can figure it out, please advise, thanks.

[rivoli]

I'm not sure I get what problem it's giving you in ps, but those settings look ok. can you show us a picture of the alpha that's giving you troubles?