So I was messing with my shader settings when the game crashed. When I rebooted the world, everything was jagged and pixellated, when it wasn't before. I reset the shader settings, reinstalled the shaders, tried looking in my nvidia settings to see what had gone wrong, and nothing had changed. How can I fix this?
P.S. to see the problem, click on the image. it may seem normal when it's small, but it's bad in fullscreen.