A graphic processing unit includes a geometry processing unit and a rendering processing unit. The geometry processing unit is configured to receive vertexes and to generate at least one primitive using the vertexes. The rendering processing unit is configured to convert the generated at least one primitive into fragments, to perform fragment shading on the converted fragments, and to perform anti-aliasing on the fragments on which the fragment shading has been performed. The rendering processing unit performs the anti-aliasing on first color data and second color data that is different from the first color data using different operations from each other.