The original Dyson "sphere" was supposed to be a ring of satelites that absorb a suns energy (DSI). It evolved in fiction to a true sphere(DSII). Most of those whove done the math think that the poles of the sphere might collapse due to a sun's gravity. 

Inorder to do something like that in Bryce you might try texturing a sphere perhaps with a height map pict  and placing your camera on the inside of the sphere using (I think??) surface mapping. Don't remember exactly how to do it but I remember accomplishing a nighttime skyscape that way - gave up on it as there are other simpler ways to trick the eye into  believing it is seeing  stars. Might be more practical for a DysOn Sphere ???