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.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Williams, L.: Casting curved shadows on curved surfaces. In: Computer Graphics (SIGGRAPH 1978 Proceedings), pp. 270–274 (1978)
Crow, F.C.: Shadow algorithms for computer graphics. In: Computer Graphics (SIGGRAPH 1977 Proceedings), pp. 242–248 (1977)
Brabec, S., Seidel, H.: Shadow Volumes on Programmable Graphics Hardware. In: Proceedings of Eurographics, vol. 22, pp. 433–440 (2003)
Everitt, C., Kilgard, M.J.: Practical and Robust Stencil Shadow. Volumes for Hardware Accelerated Rendering. NVIDIA, Austin, Texas (Referenced: 5.4.2002) (2002), http://developer.nvidia.com/view.asp?IO=robust_shadow_volumes
Surdulescu, R.: Cg Shadow Volumes (2003), http://www.gamedev.net/reference/articles/article1990.asp
Kainulainen, J.: An Introduction to Stencil Shadow Volumes (2004), http://www.devmaster.net/articles/shadow_volumes/
Bolz, J., Schröder, P.: Evaluation of Subdivision Surfaces on Programmable Graphics Hardware (2003), http://www.multires.caltech.edu/pubs/GPUSubD.pdf
Bunnell, M.: GPU Gems 2: Programming Techniques for High-Performance Graphics and General-Purpose Computation. Addison-Wesley, Reading, MA (2005)
Shiue, L.-J., Peters, J.: A Realtime GPU Subdivision Kernel. In: Proceedings of SIGGRPAH Computer Graphics Proceedings (2005), http://www.cise.ufl.edu/research/SurfLab/papers/05hwSub.pdf
Boubekeur, T., Schlick, C.: Generic Mesh Refinement On GPU. In: Proceedings of ACM SIGGRAPH/Eurographics Graphics Hardware (2005), http://www.labri.fr/Perso/~boubek/pub/GenericMeshRefinementOnGPU.pdf
Stam, J.: Exact Evaluation of Catmull-Clark Subdivision Surfaces at Arbitrary Parameter Values. In: Computer Graphics Proceedings, Annual Conference Series, pp. 395–404 (1998)
McGuire, M., Hughes, J.F.: Hardware-Determined Feature Edges. In: Proceedings of Third International Symposium on Non Photorealistic Animation and Rendering (NPAR 2004), Annecy, France, June 7-9, pp. 35–44. ACM Press, New York (2004)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2006 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Tang, M., Dong, JX., Chou, SC. (2006). Real-Time Shadow Volume Algorithm for Subdivision Surface Based Models. In: Nishita, T., Peng, Q., Seidel, HP. (eds) Advances in Computer Graphics. CGI 2006. Lecture Notes in Computer Science, vol 4035. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11784203_49
Download citation
DOI: https://doi.org/10.1007/11784203_49
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-35638-7
Online ISBN: 978-3-540-35639-4
eBook Packages: Computer ScienceComputer Science (R0)