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Parallel and Lazy Construction of Grids for Ray Tracing on Graphics Hardware

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons44724

Kalojanov,  Javor
International Max Planck Research School, MPI for Informatics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons45695

Wand,  Michael
Computer Graphics, MPI for Informatics, Max Planck Society;

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Kalojanov, J. (2009). Parallel and Lazy Construction of Grids for Ray Tracing on Graphics Hardware. Master Thesis, Universität des Saarlandes, Saarbrücken.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-BA80-8
Abstract
In this thesis we investigate the use of uniform grids as acceleration structures for ray tracing on data-parallel machines such as modern graphics processors. The main focus of this work is the trade-off between construction time and rendering performance provided by the acceleration structures, which is important for rendering dynamic scenes. We propose several parallel construction algorithms for uniform and two-level grids as well as a ray triangle intersection algorithm, which improves SIMD utilization for incoherent rays. The result of this work is a GPU ray tracer with performance for dynamic scenes that is comparable and in some cases better than the best known implementations today.