GLSL Sandbox

[quadz]

Really nifty site for demoing and experimenting with GLSL shaders in WebGL in the browser:

http://glsl.heroku.com/

Note: Some these failed to work for me in Firefox, but they all worked great in Chrome.

These shaders run entirely on the GPU, even the ones that have logic where the camera flies through the scene.

Some of them really gave my GPU a workout. With an aggressive fan curve, the core temp stayed under 70c, but it was exhausting heat like a mini blast furnace.

Haven't seen all the demos yet but here are some favorites so far:

(Note, the numeric 0.5/1/2/4/8 pulldown menu to the right of the "hide code" button seems to change the shader resolution, the higher the number, the lower the resolution factor... Generally for best results make the number as low as possible without compromising framerate.)

An on-GPU raytracer: http://glsl.heroku.com/e#12290.0  (looks especially nice at 0.5 resolution, though my GPU can't quite hack it at 60Hz with 0.5 resolution at a full 1920x1080... gets slightly choppy in fullscreen... otherwise, glassy smooth)

Grassy rolling hills, sun, lens flare: http://glsl.heroku.com/e#12543.1

Procedural height map fly-though (including trees and translucent water)  http://glsl.heroku.com/e#12007.0

Realtime perlin noise: http://glsl.heroku.com/e#12666.0

Procedural apple and wooden table: http://glsl.heroku.com/e#12645.0

Cellular automata: http://glsl.heroku.com/e#12630.6  (apparently it's reading/writing to a 2D texture to store its state)

Sort of a 3D fractal? http://glsl.heroku.com/e#12578.0

Kinda like something out of Tron: http://glsl.heroku.com/e#12470.1

"My god! it's full of stars." http://glsl.heroku.com/e#12221.0

etc.


BTW, you can tweak the code in the editor, and it will auto-recompile the shader so you can immediately see the result.





Edit: A few more...

http://glsl.heroku.com/e#11706.0  <- "the other road to hell"

http://glsl.heroku.com/e#11557.2  <- solar system

http://glsl.heroku.com/e#11473.0  <- shader invaders!

http://glsl.heroku.com/e#11414.0  <- coffee cup(s) on table, mouse moves light source

[Jay Dolan]

Those are ridiculous! Very cool, thanks for sharing.