Demos Signed-Distance Field Raytracer Robert Dionne February 25, 2012 Demos is a signed distance field raytracer. See http://en.wikipedia.org/wiki/Signed_distance_function. It has a debug rendering mode that shows the number of loop iterations per fragment, an eye-tracker level-of-detail mode that lowers the raytracer accuracy for fragments towards the edges of the screen and a toggleable mesh intersector mode. Video: http://goo.gl/3QiIu OR https://docs.google.com/file/d/0B5t1j58WWjsiOTkwOWU5MWMtMDBmMS00NDFiLWE1YWYtMDBjMTY5NTk5MjQw/edit Requirements: 1) Macbook Pro running Mac OS X Snow Leopard. 2a) Google Chrome 17.0.963.56 or better: http://www.google.com/chrome OR 2b) Mozilla Firefox 10.0.2 or better: http://www.mozilla.com/en-US/firefox/new/ Running: 1) Visit http://robertsdionne.github.com/demos/ in Google Chrome 17 or Mozilla Firefox 10. 2) Select a demonstration to run by clicking the corresponding link: * Simple demonstration with specular and diffuse lighting. * Temple demonstration with approximate ambient occlusion. * Ambient occlusion demonstration with approximate ambient occlusion and "infinite" geometry. * Solar demonstration with Perlin simplex-noise generating the geometry in space and time. Controls: W - Move shape up. S - Move shape down. A - Move shape left. D - Move shape right. Q - Move shape away. Z - Move shape toward. N - Cycle to next shape. P - Cycle to previous shape. Y - Toggle debug rendering mode in some demonstrations. U - Toggle lower level-of-detail near edges of screen. I - Toggle intersector mesh to demonstrate the coexistance of raytraced and traditional polygon geometry in the same scene with correct depth interaction.