mrdoob/three.js — pull request #4113 by LiK3LighT (2013-11-15 19:18:34+00:00)
Title: Changed the code so that the onProgress event is triggered

Changed the imaged loading from an simple image element to a XMLHttpRequest that requests the content of the image and converts it to an base64 string that can be put in an src attribute of an image element