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Real Time Volumetri...
Real Time Volumetric Shadows using Polygonal Light Volumes
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- Billeter, Markus, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sintorn, Erik, 1980 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Assarsson, Ulf, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- ISBN 9783905674262
- 2010
- 2010
- English.
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In: Proceedings of the Conference on High Performance Graphics, 2010. - 2079-8679. - 9783905674262 ; , s. 39-45
- Related links:
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https://research.cha...
Abstract
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- This paper presents a more efficient way of computing single scattering effects in homogeneous participating media for real-time purposes than the currently popular ray-marching based algorithms. These effects include halos around light sources, volumetric shadows and crepuscular rays. By displacing the vertices of a base mesh with the depths from a standard shadow map, we construct a polygonal mesh that encloses the volume of space that is directly illuminated by a light source. Using this volume we can calculate the airlight contribution for each pixel by considering only points along the eye-ray where shadow-transitions occur. Unlike previous ray-marching methods, our method calculates the exact airlight contribution, with respect to the shadow map resolution, at real time frame rates.
Subject headings
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datorteknik (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Engineering (hsv//eng)
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