Fast Soft Self-Shadowing on Dynamic Height Fields

• Published in: Computer graphics forum Vol. 27; no. 4; pp. 1275 - 1283
• Main Authors: Snydre, John, Nowrouzezahrai, Derek
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.06.2008
• Subjects: and texture; Approximation; Categories and Subject Descriptors: I.3.7 [Computer Graphics]: Color; Categories and Subject Descriptors: I.3.7 [Computer Graphics]: Color, shading, shadowing, and texture; Computer graphics; Computer programming; Electrons; Light; Lighting; shading; shadowing; Shadows; Studies

We present a new, real‐time method for rendering soft shadows from large light sources or lighting environments on dynamic height fields. The method first computes a horizon map for a set of azimuthal directions. To reduce sampling, we compute a multi‐resolution pyramid on the height field. Coarser...