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SSAO Tutorial
Originally posted on 05/01/2011BackgroundAmbient occlusion is an approximation of the amount by which a point on a surface is occluded by the surrounding geometry, which affects the accessibility of...
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Motion Blur Tutorial
Originally posted on 21/04/2011What is motion blur?Motion pictures are made up of a series of still images displayed in quick succession. These images are captured by briefly opening a shutter to...
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"Good Enough" Volumetrics for Spotlights
Originally posted on 06/01/2012Volumetric effects are one of the perennially tricky problems in realtime graphics. They effectively simulate the scattering of light through particles suspended in the...
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Gamma Correction Overview
Originally posted on 20/04/2012Rendering in linear space is good because it is simple; lighting contributions sum, material reflectance values multiply. Everything in the linear world is simple and...
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Shadow Map Allocation
Originally posted on 15/08/2011When I first implemented shadow mapping I began by allocating a shadow map texture to each shadow casting light. As the number of shadow casting lights grew, however, I...
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Per-Object Motion Blur
Originally posted on 24/09/2012A while back I published a tutorial describing a screen space technique for approximating motion blur in realtime. The effect was simplistic; it took into account the...
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Pseudo Lens Flare
Lens flare is a photographic artefact, caused by various interactions between a lens and the light passing through it. Although it is an artefact, there are a number of motives for simulating lens...
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