mrdoob/three.js — pull request #4661 by Doidel (2014-04-09 07:39:01+00:00)
Title: adding Texture.addSubImage

addSubImage allows to use "gl.texSubImage2D", a neat tool to replace
parts of a texture with another texture. Especially great for
TextureAtlases, MegaTexture / virtual texture usages, etc.