- http://gradientstudios.github.com/canvas2d-lighting-demo/
- http://jsfiddle.net/tJener/G4R99/
- http://js1k.com/2013-spring/demo/1451
- http://codeflow.org/webgl/deferred-irradiance-volumes/www/
- http://www.ro.me/tech/hatching-glow-shader
- http://mrdoob.github.com/three.js/examples/webgl_kinect.html
- https://www.shadertoy.com/view/XslGRr
- https://www.shadertoy.com/view/Xdl3R4