 {
      const texture = await renderer.loadTexture(imgURL);
      renderer.uniforms.tMap = texture;

      renderer.setMeshData([{
        positions: [
          [-1, -1],
          [-1, 1],
          [1, 1],
          [1, -1],
        ],
        attributes: {
          uv: [
            [0, 0],
            [0, 1],
            [1, 1],
            [1, 0],
          ],
        },
        cells: [[0, 1, 2], [2, 0, 3]],
      }]);

      renderer.render();

      function update(t) {
        renderer.uniforms.