Hey guys.
I unintentionally came across the shadow matte effect. I don't know how it may be used in wz engine to any advantage,
but anyway, it's a nice find imho. So, enjoy!

really cool

I've found a way to simplify it

nice found, thanks

it allow soft shadow even with point light and spot light (try to change light type)

Hey! If I get you right, it's not about the soft shadows thing . It's about compositing i.e. the "shadow matte" imho is a transparent material showing only shadows cast upon it by other objects. This material is primarily used as a shadow catcher (fake ground) for 3d objects imported into a still photograph or a video clip. Do I get your simplified version right? Were you after just a soft shadow?

ah ok sorry I thought that it was relative to soft shadow.
cool effect however that could be usefull.

OK. No worries . In fact there might be a way of using it in wz. Time will show