JezUK
1
Okay, so we can use a Render Mask, but you need to create one of those suckers first…
How about we have the ability to create multiple region renders within VFB (which I believe the latest version of Corona does already).
A nice pencil tool to create a ‘lasso’ region in VFB would be awesome 
Raph4
2
Oh yes, +1 for pencil tool.

vlado
3
Now that we have the mask, it’s not impossible to create an arbitrary shaped region, but I’m wondering in what cases you would normally do this?
Best regards,
Vlado
I have a tool just for this Jez
Raph4
5
Interesting,
I didn’t know that we could use masks 
Can we use rounded shapes and special shapes like stars, or drawn Freehand ?
JezUK
6
Of course - it’d just be more convenient to do that directly within VRay, hence the ‘wish’ 