I’ve tried to massage the material of the transparent outer shell of the marble, but all I get is the shadow of the inner piece, which looks odd, when it moves about, like some sort of squid is inside.
Is there a way to force the shadow of the Glass a bit darker, and/or the “Squid” a bit lighter ?
I tried massaging the Translucent Shadow Density scale from 0 - 1, and it changes nothing in the viewport.
Limitations: Static shadowing from
stationary and static lights is
currently not handled for lit
translucency. However, dynamic shadows
from stationary lights is supported.
Translucent Objects like your glass marble cannot render shadows like you are wanting. Here is a work around which will allow you to have some transparency with shadows it is playing around with the render rate and a panner. It will create some artifacting but depending on how close your camera gets it could work.