Pete Neisen

@Husin You can kinda get around it by using the second shader in the "Super Secret Settings" (the FXAA shader). I clears up the black area and looks like fairly normal Minecraft.

Some more interesting info on this bug. I am seeing it running a GeForce GTX 550 Ti on 14w30c. I updated both the GeForce drivers and Java to the latest and I was still seeing it. I toggled all of the video settings in Minecraft and still saw it. But, when I click on "Super Secret Settings..." in options twice to toggle the mode on then off, it clears up and is gone for the rest of the Minecraft session. Might give you guys some insight into what is going on.

Edit: I was incorrect about toggling the "Secret Settings." The black area goes away when I have selected the FXAA shader. Or any shader really.