Glitch flower

var gl,noctaves,c,t,lt,running;

let img;

function preload() {

  img = loadImage('img.jpg');

}

function setup() {

  createCanvas(windowWidth, windowHeight,WEBGL);

  gl=this.canvas.getContext('webgl');

  gl.disable(gl.DEPTH_TEST);

  noctaves=1;

  running=false;

  lt=random(100);

  img.resize(width,height);

  c=[];

  initc();

  test=new p5.Shader(this._renderer,vert,frag);//shaders are loaded

  shader(test);//shaders are applied  

}

function initc(){

  for(var i=0;i<22;i++){

    c[i]=random(-2,2);

  }

}

function mouseMoved(){

  if(random(1)>.95 &&!running){

    t=millis();

    lt+=t;

    initc();

    running=true;

  }

}

function draw() {    

  test.setUniform("iResolution", [width,height]);//pass some values to the shader

  test.setUniform("iTime", millis()*.001);

  test.setUniform('iMouse',[mouseX,mouseY]);

  test.setUniform("iImg",img);

  test.setUniform("c",c);

  if(running){

    t++;

    if(t>=lt){

      running=false;

      lt=random(50);

    }

  }

  test.setUniform("running",running);

  shader(test);

  box(width/2);

}

function mouseReleased(){

  noctaves=(noctaves>=7)?1:noctaves+2;

  if(noctaves==1)initc();

}