1. An image processing apparatus comprising: a calculator adapted to calculate information about a region of each drawing object based on drawing data; a recorder adapted to record a pointer to each drawing object in an index of each block generated by dividing a page of a correspondence table into tiles based on the information about the region, the correspondence table showing correspondence between each block and each drawing object; and an image processor device adapted to generate an image data on each block based on the correspondence table provided after completion of a processing for one page image.