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Real-Time Shadow Volume Algorithm for Subdivision Surface Based Models

  • Min Tang
  • Jin-Xiang Dong
  • Shang-Ching Chou
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4035)

Abstract

This paper presents a purely hardware-accelerated shadow volume algorithm for subdivision surface based models. By introducing SP (subdivision patterns), all procedures, including subdivision evaluation, silhouette extraction, shadow volume generation, and shadow rendering are executed on GPU (Graphics Process Units) efficiently. This not only alleviates the burden of CPU, but also guarantees the consistency of data among different processing stages. This also makes it possible to integrate some special effects imposed by other shaders, e.g., displacement mapping or vertex texturing, with the shadow volume algorithm. Experiments show that the algorithm is efficient, robust, and can be easily extended to other subdivision schemes and parametric surfaces.

Keywords

Subdivision Scheme Displacement Mapping Graphic Hardware Subdivision Surface Control Mesh 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Min Tang
    • 1
  • Jin-Xiang Dong
    • 1
  • Shang-Ching Chou
    • 2
  1. 1.College of Computer ScienceZhejiang UniversityHangzhouChina
  2. 2.Computer Science DepartmentWichita State UniversityWichitaUSA

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