texture-constant-test.js

const gpu = new GPU();
const createTexture = gpu.createKernel(function() {
  this.color(55, 55, 55, 255);
}).setOutput([1920,1080]).setOutputToTexture(true);
var texture1 = createTexture();
const kernel = gpu.createKernel(function() {
  var pixel = this.constants.texture1[this.thread.x][this.thread.y];
  var color = 0;
  var channel = this.thread.z;
  if (channel === 0) {
    color = pixel.r;
  }
  if (channel === 1) {
    color = pixel.g;
  }
  if (channel === 2) {
    color = pixel.b;
  }
  if (channel === 3) {
    color = pixel.a;
  }
  return color;
}, {
  constants : { texture1 }
}).setOutput([1920, 1080, 4]);
const bitmap = kernel();
console.log(bitmap);