H Y L O G E N

Hylogen is a purely functional language embedded in Haskell for live-coding fragment shaders, featuring:

• a simple and pure syntax
• standard operators (+, *, *^, <.>)
• compat. w/ your fav haskell goodies (higher-order functions, ADTS, swanky polymorphism).

It comes with hylide, an accompanying rendering environment featuring:

• hot-reloading
• audio-reactive primitives
• texture backbuffering

Install

cabal update
cabal install hylogen

This will install the hylogen package and hylide, the rendering environment.

Usage

-- ./Main.hs
module Main where
import Hylogen.WithHylide

color = vec4 (a, a, a, 1)
  where
    a = cos(uvN !X * sin(time / 10) * 10 + mouse !X)
      + sin(uvN !Y * sin(time / 10) * 10 + mouse !Y)

main = putStrLn . toGLSL $ color

1. run hylo...

hylo Main.hs

2. ... live-code!

Go to localhost:5678 in your browser.

You will now see your changes to Main.hs propagate to your WebGL rendering environment!

References

• The_Force by Shawn Lawson. Live-coding audio-reactive shaders!
• Type-Safe Observable Sharing by Andy Gill. data-reify made compile times combinatorially faster!

Resources

• hackage

• examples