This idea came up with James George at Detroit´s oF DevCon 2012. It consist on a set of connecting boxes that let you load and processes different type of data on the GPU. It´s designed to be flexible and visually minimalist for quick editing on life performances. But also very handy for graphically debugging, editing GLSL Shaders on the fly, and as a complement of ofxGui.

Check out the code at: https://github.com/patriciogonzalezvivo/ofxComposer