“Stackless Ray Tracing of Patches from Feature-Adaptive Subdivision on GPUs”

  • ©Nikolaus Binder and Alexander Keller

  • ©Nikolaus Binder and Alexander Keller

  • ©Nikolaus Binder and Alexander Keller

  • ©Nikolaus Binder and Alexander Keller

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Entry Number: 22

Title:

    Stackless Ray Tracing of Patches from Feature-Adaptive Subdivision on GPUs

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Abstract:


    OpenSubdiv [Pixar 2012] is the de-facto industry standard for the representation of subdivision surfaces. Its feature-adaptive subdivision [Nießner 2013] allows for efficient display using rasterization hardware. Based on this feature-adaptive refinement of creases, semi-sharp edges, and irregular patches, we introduce an efficient algorithm for ray tracing the resulting patches up to almost floating point precision.

References:


    Miura, K., and Wang, K.-K. 1994. Ray tracing Gregory-type patches. In Insight Through Computer Graphics, World Scientific (CG International ’94). Springer-Verlag, 98–109.
    Niessner, M. 2013. Rendering Subdivision Surfaces using Hardware Tessellation. PhD thesis, University of Erlangen-Nuremberg, Germany.
    Pixar, 2012. Open Subdiv, http://graphics.pixar.com/opensubdiv/.
    Pulleyblank, R., and Kapenga, J. 1987. The feasibility of a VLSI chip for ray tracing bicubic patches. Computer Graphics and Applications, IEEE 7, 3 (March), 33–44.


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