I’ve discovered that LWJGL automatically has anti-aliasing active for 2d textures imported through Slick2d. I’ve been digging around and found that supposedly GL_TEXTURE_MAG_FILTER controls it, but I’m not sure how to disable it, and GL11.glDisable(GL_TEXTURE_MAG_FILTER); didn’t work.
If anyone’s tried disabling the anti-aliasing before and knows how, your help is greatly appreciated!