Line counts disclude comments and blanks and lines with only single braces/parentheses. Speed measurements were done on a Core2-Duo Mac, using the roomfront (non-sun) model. They are just rough indications. ‘Paths’ actually also send a ‘shadow ray’ at each node – so twice the paths-per-second would give general basic ray-traces/intersections-per-second. C was faster than C++ probably mostly becaus
