Ray Casting using a Roped BVH with CUDA

Roberto Torres, Pedro. J. Martín, Antonio Gavilanes

SCCG 2009: Spring Conference on Computer Graphics 2009 (Budmerice, Slovakia). Conference Proceedings, ACM, pp. 107-114

In this paper, we present a real-time ray caster implemented on GPU using CUDA. It uses a BVH augmented with ropes that is traversed with ray packets to speed up performance. We present two algorithms making use of ray packets, packet-warp and packet-block, which set the packet size to a warp and a block, respectively. We also analyze the influence of the packet size and packet shape by testing several con gurations. Finally, we compare the time results we have obtained to previous related papers over a batch of usual scenes.


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