The game loads up fine, until I get in one of my worlds. I can still see the GUI, the esc menu works, and I can open my inventory, but everything else is black. I can still hear things just fine, like the sound when I place blocks, or mobs around me. The game worked just fine the first few times I loaded it up, but after a couple of times closing and re-opening this happened. All other versions of Minecraft are unaffected, this is confined to 15w32b as far as I can tell. I've attached the log if that matters. UPDATE: While I was writing this I came across a workaround. When I load the game up in a small window instead of fullscreen it works just fine.