@phaserjs/phaser/colormatrix/DesaturateLuminance.js

Phaser 4

import { SetColorMatrix } from "./SetColorMatrix";
const values = [
  0.2764723,
  0.929708,
  0.0938197,
  0,
  0.2764723,
  0.929708,
  0.0938197,
  0,
  0.2764723,
  0.929708,
  0.0938197,
  0,
  0,
  0,
  0,
  1
];
const offsets = [-37.1, -37.1, -37.1, 0];
export function DesaturateLuminance(gameObject, multiply = false) {
  if (SetColorMatrix(gameObject.id, values, offsets, multiply)) {
    gameObject.color.colorMatrixEnabled = true;
  }
  return gameObject;
}