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Tutorial: Intro to Pixel Bender for Non-Programmers

From now on, I will be making tutorials every once in a while and I will host them here. This is a tutorial I created long time ago, but never had a chance to post it. This is a theoretical introduction to Pixel Bender to many non-programmers out there like me, who have no prior programming experience. I wish someone had told me these things about Pixel Bender instead of learning it the hard way.
Note: This tutorial is geared towards After Effects users. There are many tutorials out there that focus on Flash development with Pixel Bender. But, you might still find the concepts explained in this tutorial useful.

Pixel Bender Intro from Satya Meka on Vimeo.

Any Comments/Suggestions are welcome.