Heres what mipmapping is, it seemd you don't have a clue:

"A MIP map (sometimes spelled mipmap) is a computer graphics technique used to achieve an illusion of depth in a two-dimensional representation of a three-dimensional (3D) image. Used in conjunction with texture mapping, MIP mapping features multiple images of a single texture map at different resolutions to represent surface textures at varying distances from the viewer's perspective: the largest scaled image is placed in the foreground and progressively smaller ones recede toward the background area. Each scale difference is defined as a MIP map level. MIP mapping helps avoid unwanted jagged edges (called jaggies) in an image that can result from using bit map images at different resolutions."
Taken off: whatis.techtarget.com