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These effects are classic and have been seen in numerous demoscene productions, but it's a nice reference.

If there were some comments this would be a really helpful resource for anyone who's interested in learning basic effects programming in GLSL. By modifying these basic effects one could create a pretty nice WebGL-based demoscene production even with little knowledge (just add music and sync effects to it).

By reading the code and tweaking in (seeing the result in realtime) you should be able to learn how things work.

Also, don't forget to checkout the rest of effects [1], there are lots! :)

[1] http://glsl.heroku.com/

Really soothing to see these incredibly fluid WebGL demos when I'm used to jerky scrolling and animations in the browser.

Hunh. Most of these fail to compile for me, and i'm running Chrome on a mac. Anyone else having similar problems?

I love how you can edit the effect and see how it changes.

Multiple GLSL effects in WebGL