Why createEnvironment use Promise in webgl_furnace_test.html

linbingquan · December 28, 2021, 2:32pm

Why createEnvironment use Promise in three.js white furnace test

createEnvironment code:

mrdoob/three.js/blob/fbd067f0b89050cedbbe1355df5193c2ec4234cc/examples/webgl_furnace_test.html#L108-L126

    
      
          			function createEnvironment() {
          
          
				return new Promise( function ( resolve ) {
          
          
					const envScene = new THREE.Scene();
          					envScene.background = new THREE.Color( COLOR );
          					if ( renderer.outputEncoding === THREE.sRGBEncoding ) envScene.background.convertSRGBToLinear();
          
          
					const pmremGenerator = new THREE.PMREMGenerator( renderer );
          					radianceMap = pmremGenerator.fromScene( envScene ).texture;
          					pmremGenerator.dispose();
          
          
					scene.background = radianceMap;
          
          
					resolve();
          
          
				} );
          
          
			}

donmccurdy · December 28, 2021, 4:29pm

Perhaps in a previous version of the example, that code was asynchronous (e.g. to load an environment texture). It doesn’t need to use a Promise now.

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Why createEnvironment use Promise in webgl_furnace_test.html

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