Compositional pattern-producing networks: neural networks, introduced by Kenneth Stanley in 2007, that turn coordinates into colors and so 'paint' images at any resolution. Artists use them for abstract generative imagery.
You're almost doing a shader where the computations are of neural networks.
Ryan Murdock, Ryan Murdock on Hacking AI
For CPPNs in particular, when I was training them, you get these images that are, in Aaron Hertzmann’s phrase, visually indeterminate and have a pretty identifiable style.
Ryan Murdock, Ryan Murdock on Hacking AI