theredGammaCorrectionShader.js';
			import { CopyShader } from '//cdn.skypack.dev/three@0.130.1/examples/jsm/shaders/CopyShader.js';

			import Stats from '//cdn.skypack.dev/three@0.130.1/examples/jsm/libs/stats.module.js';
			import dat from '//cdn.skypack.dev/dat.gui/build/dat.gui.module.js';

			// globals
			var stats;
			var params = {
				postprocessing: true,
				dithering: 'MATERIAL',
				targetType: THREE.UnsignedByteType,
				gammaOutput: true,
			};
			var camera, scene, renderer, controls;
			va