Can something invisible cast a shadow?

[jayfella]

Leaving this here for clarity.

Difference between Shadow renderer and shadow filter?

The ShadowRenderer is the first one that has been implemented. It works this way : Pre pass : render the scene from the light pint of view to compute the shadow maps (depth maps, I encourage you to read on shadow mapping if you want to know the details) Post pass : the actual rendering fo the shadows over the rendered scene : To render the shadows it does an additional geometry pass and renders the geometries with a forced shadow material. If you have a big scene with several hundred geoms i…