i’m searching since 2 days, using google, alltheweb - and the ONLY site i found that covers reflective bumpmapping is http://www.ultimategameprogramming.com . the problem: they promise to release the tutorial when the new website design is finished. who knows when this will be…
would so much like to add reflective bumpmapping to my game, http://www.gravytris.tk . so my question: is there any tutorial ? any source code? i of course would like to prefer code that works both on ati and nvidia. as i’m totally new to shaders, a stupid beginners question: what about compatibility of shaders written in cg? do they run equally well both on nvidia and ati cards? or are there always compatibility problems? as cg is an invention of nvidia - could it be that they somehow push their own cards ?