Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
You've already seen a few extremely simple kernels, during which I avoided talking about the Pixel Bender kernel language too much. Now you can jump in, explore what the language is capable of, and code it up!
As you have doubtless realized by now, the kernel language is not like ActionScript 3.0. But it's not entirely foreign either. The Pixel Bender kernel language is akin to GLSL, OpenGL's shader language. Some key things to note: