Variance Shadow Maps

Computer Graphics · Shadows · 2006 · also: VSM · variance-shadow-maps.yaml

Stores depth and squared depth so that Chebyshev's inequality bounds the occluded fraction. The map becomes linearly filterable, so it can be blurred and mipmapped like an ordinary texture.

Colour is the family; a dashed line is the second member of it.

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G moment-shadow-maps Moment Shadow Maps variance-shadow-maps Variance Shadow Maps moment-shadow-maps->variance-shadow-maps two moments light-leak between separated occluders percentage-closer-filtering Percentage-Closer Filtering variance-shadow-maps->percentage-closer-filtering PCF cost grows with filter width; this prefilters

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