Small webgl wrapper for generative art. Doesn't use any builders or preprocessors, only JS modules

FFT

Initialize it:

let numberOfBands = 32
let fft = new FFT(numberOfBands)

And then each frame do

let freq = fft.get()

Data is normalized [0…1]. To start FFT you need to click the document. Before that fft.get() will return zeroes

Textures

If you load a texture make sure it's loc doesn't interfere with other textures.

Loading images is as easy as

let u_tx_init = new Tx(gl, {src: './init.jpg', loc:3 })

Mipmap is generated autamatically. But make sure your shader has enough time for image to load. If you use if(frame<2){ /* init stuff */ } it won't work

MIDI

Just make

let midi = new MIDI()

And midi is an and auto-updating array of 64 values ranging from 0 to 1