Publications An Adaptive Acceleration Structure for Screen-space Ray Tracing We propose an efficient acceleration structure for real-time screen-space ray tracing. The hybrid data structure represents the scene geometry by combining a bounding volume hierarchy with local planar approximations. This enables fast empty space skipping while tracing and yields exact intersection points for the planar

Publications Understanding the Efficiency of Ray Traversal on GPUs - Kepler and Fermi Addendum Understanding the Efficiency of Ray Traversal on GPUs - Kepler and Fermi Addendum This technical report is an addendum to the HPG2009 paper "Understanding the Efficiency of Ray Traversal on GPUs", and provides citable performance results for Kepler and Fermi architectures. We explain how to optimize the

Publications Maximizing Parallelism in the Construction of BVHs, Octrees, and k-d Trees Maximizing Parallelism in the Construction of BVHs, Octrees, and k-d Trees A number of methods for constructing bounding volume hierarchies and point-based octrees on the GPU are based on the idea of ordering primitives along a space-filling curve. A major shortcoming with these methods is that they construct l

We propose a new sampling space for light transport simulation which allows to unify two popular algorithms with orthogonal strengths: unbiased Monte Carlo path integration and photon density estimation. Traditionally, unbiased Monte Carlo path integration has been considered the only approach for accurate light transport simulation. However, recent work in photon density estimation has demonstrat