I was hoping this was the coverage of the "Killer Portfolio or Portfolio Killer" talk on GDC. I really want to know what was said in that talk. If anyone who attended that talk has any notes, please share! edit: I found a link to the basic bullet points on that talk…
Take a look at Forza's material talk at GDC for a bit more advanced look at car paint shaders. Theres some code there if I remember correctly from attending the talk. Was a good talk about their material system.