Queried Virtual Shadow Maps

Information

• Publication Type: Article in a Book
• Workgroup(s)/Project(s):
  • GameTools
• Date: December 2006
• Booktitle: ShaderX 5 -- Advanced Rendering Techniques
• Editor: Wolfgang Engel
• ISBN: 1-58450-499-4
• Publisher: Charles River Media
• Series: ShaderX
• Volume: 5
• Pages: 249 – 262
• Keywords: shadows, shadow mapping, real-time rendering

Abstract

In this article we present a new real-time shadow mapping algorithm capable of shadowing large scenes by virtually increasing the resolution of the shadow map beyond the GPU hardware limit. We start with a brute force approach that uniformly increases the resolution of the whole shadow map. We then introduce a smarter version which greatly increases runtime performance while still being GPU-friendly. The algorithm contains an easy to use performance/quality-tradeoff parameter, making it tunable to a wide range of graphics hardware.

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BibTeX

@incollection{GIEGL-2006-QVS,
  title =      "Queried Virtual Shadow Maps",
  author =     "Markus Giegl and Michael Wimmer",
  year =       "2006",
  abstract =   "In this article we present a new real-time shadow mapping
               algorithm capable of shadowing large scenes by virtually
               increasing the resolution of the shadow map beyond the GPU
               hardware limit. We start with a brute force approach that
               uniformly increases the resolution of the whole shadow map.
               We then introduce a smarter version which greatly increases
               runtime performance while still being GPU-friendly. The
               algorithm contains an easy to use
               performance/quality-tradeoff parameter, making it tunable to
               a wide range of graphics hardware.",
  month =      dec,
  booktitle =  "ShaderX 5 -- Advanced Rendering Techniques",
  editor =     "Wolfgang Engel",
  isbn =       "1-58450-499-4",
  publisher =  "Charles River Media",
  series =     "ShaderX",
  volume =     "5",
  keywords =   "shadows, shadow mapping, real-time rendering",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2006/GIEGL-2006-QVS/",
}