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Mipmap-Based Deferred Soft Shadow Mapping
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  • Journal title : Journal of KIISE
  • Volume 43, Issue 4,  2016, pp.399-403
  • Publisher : Korean Institute of Information Scientists and Engineers
  • DOI : 10.5626/JOK.2016.43.4.399
 Title & Authors
Mipmap-Based Deferred Soft Shadow Mapping
Kim, Sunggoo; Lee, Sungkil;
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 Abstract
Deferred Shading is a shading technique that postprocesses pixels in the screen space, following geometry-only rendering passes with depth buffering. Unlike typical shadow mapping techniques, this technique allows us to render shadows from multiple light sources without changing the structure of the rendering pipelines. This paper presents a deferred shadow mapping technique and its extension to soft shadows using mipmapping. Our technique first generates visibility maps from light sources, and blurs the visibility maps for deferred shading. This strategy leads to efficient soft-edged shadows, but does not incorporate depth variation, producing light bleeding to some extent. In order to suppress the light-bleeding artifacts, we also propose a depth-adaptive mipmap sampling technique in the screen space.
 Keywords
deferred shading;shadow mapping;soft shadows;postprocessing;
 Language
Korean
 Cited by
 References
1.
F . Policarpo, F. Fonseca, and C. Games, Deferred shading tutorial, pp. 32, Pontifical Catholic University of Rio de Janeiro 31, Rio de Janeiro, 2005.

2.
M. Mittring, Finding next gen: Cryengine 2, ACM SIGGRAPH 2007 courses, ACM, 2007.

3.
A. Appel, "Some techniques for shading machine renderings of solids," Proc. of the ACM Spring Joint Computer Conference 1968, pp.37-45, 1968.

4.
L. Williams, "Casting curved shadows on curved surfaces," Proc. of ACM SIGGRAPH 5th Annual Conference on Computer Graphics and Interactive Techniques, pp.270-274, 1978.

5.
W. Donnelly and L. Andrew, "Variance shadow maps," Proc. of the ACM Symposium on Interactive 3D graphics and Games 2006, pp. 161-165, 2006.

6.
T. Annen, T. Mertens, H. P. Seidel, E. Flerackers, and J. Kautz, "Exponential shadow maps," Proc. of the CIPS Graphics Interface 2008, pp. 155-161, 2008.

7.
W. T. Reeves, D. H. Salesin, and R. L. Cook, "Rendering antialiased shadows with depth maps," Proc. of the ACM SIGGRAPH 14th Annual Conference on Computer Graphics and Interactive Techniques, pp. 283-291, 1987.

8.
A. Lauritzen, Chapter 8: Summed-area variance shadow maps in GPU Gems 3, pp.157-181, Addison-Wesley Professional, Indianapolis, 2007.

9.
T. Annen, Z. Dong, T. Mertens, P. Bekaert, H. P. Seidel, and J. Kautz, "Real-Time, All-Frequency Shadows in Dynamic Scenes," Journal of ACM Transactions on Graphics, Vol. 27, No.3, pp. 34, Aug. 2008.

10.
S. Lee, G. J. Kim, and S. Choi, "Real-time depth-of-field rendering using anisotropically filtered mipmap interpolation," Journal of IEEE Transactions on Visualization and Computer Graphics , Vol. 15, No.3, pp.453-464, May. 2009 . crossref(new window)

11.
F. C. Crow, "Summed-area tables for texture mapping," Proc. of the ACM SIGGRAPH 11th Annual Conference on Computer Graphics and Interactive Techniques, pp. 207-212, 1984.