http://www.thebookofshaders.com/
Patricio Gonzalez Vivo & Jen Lowe - The book of shaders
Slimshader by erikoostveen.co.uk
Erik Oostveen
“SlimShader is an Open Source Raspberry PI project based on glslViewer** capable of displaying OpenGL/GLSL shader files (stills or motion graphics). Shader files can be displayed “as is” or controlled in various ways: Manually (knobs), LFO (three digital low frequency oscillators), MIDI, Audio or CV. In this video we see the “Just Shaders” version in action. This version only requires you to power the Raspberry pi and hook it up to a HDMI monitor (or projector in these examples) and it will run randomly through all 200+ onboard shader files. The full version -the one with all additional controls- is still under development.”
by: Patricio Gonzalez Vivo, (The book of shaders)