playcanvas/build/playcanvas.dbg/src/scene/shader-lib/programs/lit-options-utils.js

Open-source WebGL/WebGPU 3D engine for the web

import { LIGHTTYPE_DIRECTIONAL } from "../../constants.js";
const LitOptionsUtils = {
  // generate a key for the lit options
  generateKey(options) {
    return `lit${Object.keys(options).sort().map((key) => {
      if (key === "shaderChunks") {
        return options.shaderChunks?.key ?? "";
      } else if (key === "lights") {
        return LitOptionsUtils.generateLightsKey(options);
      }
      return key + options[key];
    }).join("\n")}`;
  },
  generateLightsKey(options) {
    return `lights:${options.lights.map((light) => {
      return !options.clusteredLightingEnabled || light._type === LIGHTTYPE_DIRECTIONAL ? `${light.key},` : "";
    }).join("")}`;
  }
};
export {
  LitOptionsUtils
};