When i join a world some textures are flickering one example is reeds. Clear glass will show the pattern on all sides when placed (you can see it through the glass). There is also a black bar that crosses the horizon and i am not using any shaders, this includes in-game or mods. http://gyazo.com/54a2e77062af878d0dd826ebc64237a3 - Example

I have completely wiped my game and re installed and it still happens, I've tried all previous versions and snapshots and it is normal. When i use MCPatcher the texture issues stop however the black bar is still present.