An improved non-orthogonal texture warping for better shadow rendering
2015
In interactive applications, shadows are traditionally rendered using the shadow mapping algorithm. The disadvantage
of the algorithm is limited resolution of depth texture which may lead to aliasing artifacts on shadow edges.
This paper introduces an improved depth texture warping with non-orthogonal grid that can be employed for all
kinds of light sources. For instance, already known approaches for reducing aliasing artifacts are widely used in
outdoor scenes with directional light sources but they are not directly applicable for point light sources. We show
that the improved warping parameterization reduces the aliasing artifacts and we are able to present high quality
shadows regardless of a light source or a camera position in the scene.
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