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

PlayCanvas WebGL game engine

import { LIGHTTYPE_DIRECTIONAL } from '../../constants.js';

var LitOptionsUtils = {
		generateKey (options) {
				return "lit" + Object.keys(options).sort().map((key)=>{
						if (key === 'chunks') {
								return LitOptionsUtils.generateChunksKey(options);
						} 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('');
		},
		generateChunksKey (options) {
				var _options_chunks;
				return "chunks:\n" + Object.keys((_options_chunks = options.chunks) != null ? _options_chunks : {}).sort().map((key)=>key + options.chunks[key]).join('');
		}
};

export { LitOptionsUtils };