are we certain there is opacity involved? It's kinda low res image but looks to me like there was just a dark background, leaves painted on top of that, and the geometry is a rectangle just unfolded so that it would fit into image like klunk showed.
Dark Blender - Download: http://linko.projects.free.fr/dblender.zip I come back with my tool to generate a Dota asset in one single click. A lot of improvement have been made. Now you can generate all your LoD in one single click and the greyscale have been improved (based on the texturing technique of Tvidotto). It will…