This site works best with JavaScript enabled. Please enable JavaScript to get the best experience from this site.
GLSL Shaders
It's bump-mapping. It's a mod, and this was probably with a Minecraft 128x default texture pack. Good luck on your search!
http://www.minecraftforum.net/topic/482276-17-03128x64xdefault-3d-model-texture-aether-supportupdated-060811/page__hl__default donkey