A graphic division unit divides image data to be output into a plurality of divided regions, and an order determination unit determines a generation order of a plurality of the divided regions of the image data so as to cause a first generation order of the image data and a second generation order of the image data to be different from each other. A generation stop instruction unit causes generation of the image data until the image data combining the image data generated based on the first generation order with the image data generated based on the second generation order corresponds to the image data to be output.