Section du manuel décrivant le shadow mapping : http://books.google.ca/books?id=3c-jmWkLNwUC&pg=PA405&lpg=PA405&dq=webgl+%22shadow+mapping%22+-three&source=bl&ots=z-ts1w7DF6&sig=nsLMK1VE81CHaT0l9aH6PJ2Sv04&hl=en&sa=X&ei=_FRIVMOkJ4KxyAT8n4GoBA&redir_esc=y#v=onepage&q=webgl%20%22shadow%20mapping%22%20-three&f=false Origine du code source : https://sites.google.com/site/webglbook/home/9-various-techniques