After I apply a Pixel Bender shader, I want to query what is the computed region reasoning. Is there a way to do this?
Right now I'm saving the displayed image (useful pixels + white background) using this.width, this.height, but it's more than needed. previewImage.width and previewImage.height are too small.
var bmpd:BitmapData = new BitmapData( this.width, this.height);
bmpd.draw( previewImage );
Retrieving data ...