ces/models/windmill/windmill-fixed.mtl', (mtl) =&gt; {
  mtl.preload();
  mtl.materials.Material.side = THREE.DoubleSide;
  objLoader.setMaterials(mtl);
  objLoader.load('resources/models/windmill/windmill.obj', (event) =&gt; {
    const root = event.detail.loaderRootNode;
    scene.add(root);
    ...
  });
});
</pre>
<p>Le nouveau code .GLTF est</p>
<pre class="prettyprint showlinemods notranslate lang-js" translate="no">{
  const gltfLoader = new GLTFLoader();
  const url = 'resources/models/cartoon_lowpo