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Ray Tracing Arbitrary Objects on the GPU

Adapting ray tracing algorithms to programmable graphics hardware has gained momentum recently by using the parallelism of the GPU to reduce the work done on the CPU. GPU methods for ray tracing scenes consisting of only triangles have since been proposed. In this paper, we present a general method for ray tracing objects other than triangles on the GPU. Using more advanced primitives allows for faster and better results by reducing the number of intersection tests, as well as providing a more accurate representation of the surface. Realistic images can then be produced containing complex shapes without being limited to a model completely made up of triangles.