ed>Alpha</option>
      <option value="noAlpha">No Alpha</option>
    </select>

    <select id="antialias">
      <option value="antialias" selected>Antialiased</option>
      <option value="noAntialias">No antialiasing</option>
    </select>

    <select id="format">
      <option value="unsigned-byte" selected>Unsigned Byte Textures</option>
      <option value="half-float">Half Float Textures</option>
      <option value="float">Float Textures</option>
    </select>
  </div>

  <div id="sketch"></div>

