// try to create a WebGL canvas (will fail if WebGL isn't supported)
try {
var canvas = fx.canvas();
} catch (e) {
alert(e);
return;
}
// convert the image to a texture
var image = document.getElementById('image');
var texture = canvas.texture(image);
// apply the perspective filter
canvas.draw(texture).perspective( [0,0,774,0,0,1094,774,1094], [0,389,537,0,732,1034,1269,557] ).update();
image.src = canvas.toDataURL('image/png');
// or even if you replace the image with the canvas
// image.parentNode.insertBefore(canvas, image);
// image.parentNode.removeChild(image);
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