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Convolution Shadow Maps
(The Eurographics Association, 2007)
We present Convolution Shadow Maps, a novel shadow representation that affords efficient arbitrary linear filtering of shadows. Traditional shadow mapping is inherently non-linear w.r.t. the stored depth values, due to the ...
Spherical Harmonic Gradients for Mid-Range Illumination
(The Eurographics Association, 2004)
Spherical harmonics are often used for compact description of incident radiance in low-frequency but distant lighting environments. For interaction with nearby emitters, computing the incident radiance at the center of an ...