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Real-Time Shadowing Techniques

Kautz, Jan; Akenine-Möller, Tomas LU ; Stamminger, Marc; Chan, Eric; Heidrich, Wolfgang and Kilgard, Mark (2004) 31th International Conference on Computer Graphics and Interactive Techniques, 2004 In International Conference on Computer Graphics and Interactive Techniques ACM SIGGRAPH 2004 Course Notes
Abstract
Shadows heighten realism and provide important visual cues about the spatial relationships between objects. But integration of robust shadow shadowing techniques in real-time rendering is not an easy task. In this course on how shadows are incorporated in real-time rendering, attendees learn basic shadowing techniques and more advanced techniques that exploit new features of graphics hardware.The course begins with shadowing techniques using shadow maps. After an introduction to shadow maps and general improvements of this technique (filtering, depth bias, omnidirectional lights, etc.), the first section describes two methods for reducing sampling artifacts: perspective shadow maps and silhouette maps. Both techniques can significantly... (More)
Shadows heighten realism and provide important visual cues about the spatial relationships between objects. But integration of robust shadow shadowing techniques in real-time rendering is not an easy task. In this course on how shadows are incorporated in real-time rendering, attendees learn basic shadowing techniques and more advanced techniques that exploit new features of graphics hardware.The course begins with shadowing techniques using shadow maps. After an introduction to shadow maps and general improvements of this technique (filtering, depth bias, omnidirectional lights, etc.), the first section describes two methods for reducing sampling artifacts: perspective shadow maps and silhouette maps. Both techniques can significantly improve shadow quality, but they require careful implementation. The course continues with extensions of the shadow mapping method that allow soft shadows from linear and area light sources. The second part of the course discusses recent advances in efficient and robust implementation of shadow volumes on graphics hardware and then shows how shadow volumes can be extended to generate accurate soft shadows from area lights. Finally, the course summarizes real-time shadowing from full lighting environments using the technique of precomputed radiance transfer.The course explains the differences among these algorithms and their strengths and weaknesses. Implementation details, often omitted in technical papers, are provided. And throughout the course, the tradeoffs between quality and performance are illustrated for the different techniques. (Less)
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author
organization
publishing date
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Chapter in Book/Report/Conference proceeding
publication status
published
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in
International Conference on Computer Graphics and Interactive Techniques ACM SIGGRAPH 2004 Course Notes
publisher
ACM SIGGRAPH
conference name
31th International Conference on Computer Graphics and Interactive Techniques, 2004
external identifiers
  • scopus:84958692679
DOI
10.1145/1103900.1103927
language
English
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yes
id
52fce5b3-cbe9-47e8-ad93-04122e8fa6e0 (old id 747722)
date added to LUP
2008-01-18 10:15:32
date last changed
2016-04-16 09:26:44
@inproceedings{52fce5b3-cbe9-47e8-ad93-04122e8fa6e0,
  abstract     = {Shadows heighten realism and provide important visual cues about the spatial relationships between objects. But integration of robust shadow shadowing techniques in real-time rendering is not an easy task. In this course on how shadows are incorporated in real-time rendering, attendees learn basic shadowing techniques and more advanced techniques that exploit new features of graphics hardware.The course begins with shadowing techniques using shadow maps. After an introduction to shadow maps and general improvements of this technique (filtering, depth bias, omnidirectional lights, etc.), the first section describes two methods for reducing sampling artifacts: perspective shadow maps and silhouette maps. Both techniques can significantly improve shadow quality, but they require careful implementation. The course continues with extensions of the shadow mapping method that allow soft shadows from linear and area light sources. The second part of the course discusses recent advances in efficient and robust implementation of shadow volumes on graphics hardware and then shows how shadow volumes can be extended to generate accurate soft shadows from area lights. Finally, the course summarizes real-time shadowing from full lighting environments using the technique of precomputed radiance transfer.The course explains the differences among these algorithms and their strengths and weaknesses. Implementation details, often omitted in technical papers, are provided. And throughout the course, the tradeoffs between quality and performance are illustrated for the different techniques.},
  author       = {Kautz, Jan and Akenine-Möller, Tomas and Stamminger, Marc and Chan, Eric and Heidrich, Wolfgang and Kilgard, Mark},
  booktitle    = {International Conference on Computer Graphics and Interactive Techniques ACM SIGGRAPH 2004 Course Notes},
  language     = {eng},
  publisher    = {ACM SIGGRAPH},
  title        = {Real-Time Shadowing Techniques},
  url          = {http://dx.doi.org/10.1145/1103900.1103927},
  year         = {2004},
}