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    Efficient Shadow Mapping (US)

    Gamefest 2011 Presentation
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      49.5 MB

        Shadow mapping is a well-known technique for rendering shadows in 3D scenes. For highly complex scenes, however, shadow map creation can consume a big portion of the rendering budget. A naive solution to this problem would use occlusion culling from the light source to reduce the amount of rendered shadow casters. In this talk, we describe a method for solving this problem by using knowledge of visibility from the main view for culling shadow casters. First, we use occlusion culling for the camera view to identify visible shadow receivers. Second, when rendering into the shadow map, we use only those shadow casters that cast shadows on visible shadow receivers. All other shadow casters are culled, leading to significant improvements in the total frame rendering time.
    • Supported Operating System

      Windows 7

        PowerPoint, WMA
      • PowerPoint presentation and WMA

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