Real time ray tracing of point-based models

  • Authors:
  • Sriram Kashyap;Rhushabh Goradia;Parag Chaudhuri;Sharat Chandran

  • Affiliations:
  • Indian Institute of Technology Bombay;Indian Institute of Technology Bombay;Indian Institute of Technology Bombay;Indian Institute of Technology Bombay

  • Venue:
  • Proceedings of the 2010 ACM SIGGRAPH symposium on Interactive 3D Graphics and Games
  • Year:
  • 2010

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Abstract

Mirroring the development of rendering algorithms for polygonal models, z-buffer style rendering for point-based models has given way recently to more advanced methods. A fast raycasting based approach [Wald and Seidel 2005] shows shadows, but does not demonstrate reflective effects. The more general raytracing approach [Linsen et al. 2007] is substantially slower. We advance the state of the art by ray tracing point models in real time. Our system relies on an efficient way of storing and accessing point data structures on the GPU. We hope that this leads the way for future work towards more realistic global illumination effects including soft shadows, simultaneous reflection & refraction, and caustics.