Selection of opengl or directx renderer at runtime

I am opening 3d view of my files in my program.
I want to specify renderer type (opengl or directx) for each file at runtime. (for example using a combo box)

So there may be two java3d windows at any time: one of them using opengl renderer and the other one using directx renderer.

Is this possible now, or can it be possible in the future?

The answer to my question can be found here: http://www.javadesktop.org/forums/thread.jspa?messageID=58017