I've just read a paper which states that real-time ray-tracing might become
doable on the next generation GPUs using their fragment shaders:
Ray Tracing on Programmable Graphics Hardware - Purcell et al., SIGGRAPH
2002
http://graphics.stanford.edu/papers/rtongfx/
- Micha
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POV-Ray Objects Collection: http://bjects.povworld.org
