Ray tracing is the current holy grail of gaming graphics, the rendering technique that might finally make the licensed game based on Pixar's latest look as good as the film itself. But, the typically random nature of rays has made rendering them on traditional hardware inefficient, a problem Caustic Graphics claimed to have solved, and is now backing that up by giving PC Perspective some further details and demos. The company's tech will rely on a new graphics co-processor called the Ray Tracing Processing Unit (RTPU), working in concert with existing 3-D accelerators to deliver rays at frame rates high enough f
