john-chapman-graphics

Lens flare is a photographic artefact, caused by various interactions between a lens and the light passing through it. Although it is an art...

Originally posted on 24/09/2012 A while back I published a tutorial describing a screen space technique for approximating motion blur in ...

Originally posted on 15/08/2011 When I first implemented shadow mapping I began by allocating a shadow map texture to each shadow casting ...

Originally posted on 20/04/2012 Rendering in linear space is good because it is simple; lighting contributions sum, material reflectance v...

Originally posted on 06/01/2012 Volumetric effects are one of the perennially tricky problems in realtime graphics. They effectively simul...

Originally posted on 21/04/2011 What is motion blur? Motion pictures are made up of a series of still images displayed in quick successio...

Originally posted on 05/01/2011 Background Ambient occlusion is an approximation of the amount by which a point on a surface is occluded ...