Emil will be joining us over @ Ubisoft Massive as a Character Artist! Can't wait to start working with you man! You deserve this and I know you will do a great job!
Right, you will know the movie, or you will cheat and google. "You spent twelve dollars and didn't hit a goddamn thing. I nailed one and it cost about four and a quarter. "
Now you're looking for the secret. But you won't find it because of course, you're not really looking. You don't really want to work it out. You want to be fooled.
In this case I don't think even that's needed, it's just assumed the blue channel is white (set the blue channel to white in the top image and you get much the same output as the second image) with tangent space normal maps there's never really a lot of detail in the blue channel. All the normal perturbation is in the red…