Translucent shadow maps

  • Authors:
  • Carsten Dachsbacher;Marc Stamminger

  • Affiliations:
  • University of Erlangen-Nuremberg, Germany;University of Erlangen-Nuremberg, Germany

  • Venue:
  • EGRW '03 Proceedings of the 14th Eurographics workshop on Rendering
  • Year:
  • 2003

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Abstract

Shadow maps are a very efficient means to add shadows to arbitrary scenes. In this paper, we introduce Translucent Shadow Maps, an extension to shadow maps which allows very efficient rendering of sub-surface scattering. Translucent Shadow Maps contain depth and incident light information. Sub-surface scattering is computed on-the-fly during rendering by filtering the shadow map neighborhood. This filtering is done efficiently using a hierarchical approach. We describe optimizations for an implementation of Translucent Shadow Maps on contemporary graphics hardware, that can render complex translucent objects with varying light and material properties in real-time.