Bildpunkt is a simple GPU-based distance field renderer. It is written in Haskell using the accelerate library.
The following sample images are rendered in around 4 seconds on a GeForce GTX 650 Ti Boost.
$ git clone https://github.com/apunktbau/bildpunkt
$ cd bildpunkt
$ cabal configure && cabal build
$ ./dist/build/bildpunkt/bildpunkt simple1 simple1.png
Currently there is no textual input, so scenes must be built by writing Haskell code. Check Bildpunkt.Scene for some simple pre-built scenes. To render your scene, add a new match
"yourSceneName" -> Scene.yourScene
to Bildpunkt.Main.renderScene.config and run
$ bildpunkt yourSceneName image.png
Bildpunkt.DistanceField provides all distance fields you can use to build a scene.
For more information on distance fields, see Iñigo Quílez' website.