Adding an image as "mask" to existing code

p5.js Coding Questions
1

Hello !

I’m having issues to add in image as background : I created a light on a sphere, following my mouse, but I would like it to be all over an image background, not on the sphere as in P5js references…
How can I add a light spectrum over an image ?

Thanks in advance,
have a good day :slight_smile:

Capture d’écran 2022-01-24 à 16.25.55
Capture d’écran 2022-01-24 à 16.25.551920×1200 55.4 KB 

var img;
function setup () {
  createCanvas(500,500,WEBGL);
}
function draw () {
  background (0,0,0);
  let locX = mouseX - width / 2;
  let locY = mouseY - height / 2;
  
  ambientLight(40);
  spotLight(255, 0, 0, locX, locY, 500, 0, 0, -1, Math.PI / 10);
  st
![Capture d’écran 2022-01-24 à 16.25.47|690x431](upload://4foJKpts9eWDa4OI3wtQHMVIICZ.jpeg)
roke(0);
  sphere(100);
}