Got to work on this website https://psenough.github.io/shader_summary/ that try to gather all graphical live coding events performed in the past.
Basically, for people that don’t know, it’s live coding performance done, sometime as a competition, sometime as a jam, where folks create real time graphics stuff.
One of the common tool used is Bonzomatic , it’s a simple application that use OpenGL to render a rectangle that fit to the application screen and then you can live edit the Framgment Shader that determine what should be the color of the pixel.