The V-Ray material wrapper is a material that can extend a base material if you want to get all OOP. You simply connect a material to the base material slot of the material wrapper. If you do nothing the material wrapper just passes through the base material properties, but you could do all kinds off adjustments to this material.
You can dial down cast and recieved GI info for instance.
The material can also be used to create a usebackground material which is useful for post. See this post for a simple step by step tutorial for this setup.
2 Responses to V-Ray Material Wrapper : Use background
Milan April 14, 2012
Hi there
I’m hoping you have some advice for me of some sort…
I’m trying to render a shadow on a surface, and as simple as this is suppose to be I can’t get it figured out!
I’ve been searching the net for the last two hours and it seems the Vraymatwrapper is the only solution to this problem people seem to say.
I still don’t get it right though!!!!!!
I follow all the instructions as numerous people have posted.
Here are my main steps:
1) I create the Vraymtlwrapper and apply it to the ground lane where I need the shadow to be isolated.
2) I place a standard Vraymtl in the base matl slot and leave all the default settings
3) Leave receive GI on and switch rest off
4) I switch Matt surface on and alpha cont to -1.0
5) I tick on shadows but alpha is off
This seems to be the settings everyone is indicating but my ground plane renders pitch black. Are there any other
settings I’m missing?
This is so frustrating me right now!!
Johan Borgström April 16, 2012
Hi,
I just added a post regarding this subject.
http://www.theshapeofmotion.com/interesting/v-ray-render-shadow-pass/