This is regarding the typical mesh plane behind/beneath every furniture/decor piece in Secondlife.
I know how to bake the shadow etc, with a lamp or light! and then bake shadow, BUT!! That is not the question today MUST we use lamps/lights to bake shadow?
I want to use JUST my HDRI to light&shadow my object&shadowplane (((because faster))))
but ... when I go to bake the shadow plane it's totally black if I do not use lamps
So my question is, do we need lamps to bake a shadow? is it not possible to bake the shadowplane from just hdri?