Real-Time Rendering of Glossy Materials with Regular Sampling

Christian Luksch, Robert F. Tobler, Thomas Mühlbacher, Michael Schwärzler, Michael Wimmer
Real-Time Rendering of Glossy Materials with Regular Sampling
The Visual Computer, 30(6-8):717-727, June 2014.

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Abstract

Rendering view-dependent, glossy surfaces to increase the realism in real-time applications is a computationally complex task, that can only be performed by applying some approximations—especially when immediate changes in the scene in terms of material settings and object placement are a necessity. The use of environment maps is a common approach to this problem, but implicates performance problems due to costly pre-filtering steps or expensive sampling. We, therefore, introduce a regular sampling scheme for environment maps that relies on an efficient MIP-map-based filtering step, and minimizes the number of necessary samples for creating a convincing real-time rendering of glossy BRDF materials.

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BibTeX

@article{LUKSCH-2014-RTR,
  title =      "Real-Time Rendering of Glossy Materials with Regular
               Sampling",
  author =     "Christian Luksch and Robert F. Tobler and Thomas
               M{"u}hlbacher and Michael Schw{"a}rzler and Michael Wimmer",
  year =       "2014",
  abstract =   "Rendering view-dependent, glossy surfaces to increase the
               realism in real-time applications is a computationally
               complex task, that can only be performed by applying some
               approximations—especially when immediate changes in the
               scene in terms of material settings and object placement are
               a necessity. The use of environment maps is a common
               approach to this problem, but implicates performance
               problems due to costly pre-filtering steps or expensive
               sampling. We, therefore, introduce a regular sampling scheme
               for environment maps that relies on an efficient
               MIP-map-based filtering step, and minimizes the number of
               necessary samples for creating a convincing real-time
               rendering of glossy BRDF materials.",
  month =      jun,
  issn =       "0178-2789",
  journal =    "The Visual Computer",
  number =     "6-8",
  volume =     "30",
  pages =      "717--727",
  keywords =   "real-time rendering , BRDFs",
  URL =        "https://www.cg.tuwien.ac.at/research/publications/2014/LUKSCH-2014-RTR/",
}