Getting fabric.js to work with Retina screens

retina_fabric.js

    if( window.devicePixelRatio !== 1 ){

      var c = canvas.getElement(); // canvas = fabric.Canvas
      var w = c.width, h = c.height;

    // Scale the canvas up by two for retina
    // just like for an image
      c.setAttribute('width', w*window.devicePixelRatio);
      c.setAttribute('height', h*window.devicePixelRatio);

    // then use css to bring it back to regular size
    // or set it here
    //    c.setAttribute('style', 'width="'+w+'"; height="'+h+'";')
    // or jQuery  $(c).css('width', w);
    //      $(c).css('width', w);
    //      $(c).css('height', h);

      // finally set the scale of the context
      c.getContext('2d').scale(window.devicePixelRatio, window.devicePixelRatio);

    }

Thank you for saving my day!

Thanks!

For which version of Fabric?