Distributed Ray Tracing

@inproceedings{cook1984distributed,
  title={Distributed ray tracing},
  author={Cook, Robert L and Porter, Thomas and Carpenter, Loren},
  booktitle={Proceedings of the 11th annual conference on Computer graphics and interactive techniques},
  pages={137--145},
  year={1984}
}

Addition to original Raytracing .

Adding “soft” phenomena to ray tracing, like soft shadows, or half-glossy reflections. This is done by spawning and averaging multiple secondary rays using a distribution function rather than directly sampling to light sources or the perfect reflection angle.

This is a kind of Monte Carlo Ray Tracing .

However, for diffuse surfaces, no secondary rays are sent out, thuns no light bleeding.