Dynamic raytracing... see "heaven 7":
http://www.inf.bme.hu/~exceed/
(click link at the top of the list on the left of the page)
Of course, it uses tons of optimizations and only simple primitives, but
this shows that it's possible...
- Slime
[ http://www.slimeland.com/ ]
[ http://www.slimeland.com/images/ ]
