Due to recent work by contributors from Toshiba Corporation, X3DOM now has a mode that supports joined visualization of volumetric and polygonal data.
With the RadarVolumeStyle node, this exciting combination is already possible, correctly combining depth values from polygonal rendering with the current depth during volume raycasting. In the future, this feature will likely become available in all volume style nodes (see discussion).
Thanks a lot to our contributors from Japan 
Check out the demo here!
