_onGLContextCreate = async gl => {
    const scene = new THREE.Scene();
    const camera = new THREE.PerspectiveCamera(
      75, gl.drawingBufferWidth / gl.drawingBufferHeight, 0.1, 1000
    );
    const renderer = ExpoTHREE.createRenderer({ gl });
    renderer.setSize(gl.drawingBufferWidth, gl.drawingBufferHeight);

    const geometry = new THREE.SphereBufferGeometry(1, 36, 36);
    const material = new THREE.MeshBasicMaterial({
      map: await ExpoTHREE.createTextureAsync({
        asset: Expo.Asset.fromModule(require("./img/panorama.png"))
      })
    });
    const sphere = new THREE.Mesh(geometry, material);
    scene.add(sphere);
    camera.position.z = 2;
    const render = () => {
      requestAnimationFrame(render);
      sphere.rotation.x += 0.01;
      sphere.rotation.y += 0.01;
      renderer.render(scene, camera);
      gl.endFrameEXP();
    };
    render();
  };
}