I notice that V-Ray does not cast shadows from face-me / billboard components obeying the ‘shadows face sun’ feature in Sketchup. I found a post here from 2009 detailing this issue but nothing else later, and no solution.
It would be a huge benefit for me if this functionality could be incorporated into VRay. Previously I used Shaderlight, which did have this ability, so presumably it is not technically impossible to implement it in an external renderer. Is there any chance of seeing it in Vray?