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Conference Paper

Soft Shadow Maps for Linear Lights

MPS-Authors
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Heidrich,  Wolfgang
Computer Graphics, MPI for Informatics, Max Planck Society;

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Brabec,  Stefan
Computer Graphics, MPI for Informatics, Max Planck Society;

/persons/resource/persons45449

Seidel,  Hans-Peter       
Computer Graphics, MPI for Informatics, Max Planck Society;

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Citation

Heidrich, W., Brabec, S., & Seidel, H.-P. (2000). Soft Shadow Maps for Linear Lights. In B. Péroche, & H. Rushmeier (Eds.), Rendering Techniques 2000 (pp. 269-280). Vienna, Austria: Springer.


Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-34F2-3
Abstract
Soft shadows and penumbra regions generated by extended light sources such as
linear and
area lights are visual effects that significantly con-tribute to the
realism of a scene. In interactive
applications, shadow computations are mostly performed by either the
shadow volume or the shadow map
algorithm. Variants of these methods for soft shadows exist, but they
require a significant number of
samples on the light source, thereby dramatically increasing rendering
times.\\In this paper we present
a modification to the shadow map algorithm that allows us to render soft
shadows for linear light
sources of a high visual fidelity with a very small number of light
source samples. This algorithm is
well suited for both software and hardware rendering.