1. A graphics data processing method comprising: determining a guard band region, having a distance range which is predetermined in a viewing direction from a position of a virtual camera, outside a virtualization region representing regions of objects able to be displayed on a screen, from among a plurality of objects included in graphics data; acquiring position information of each of the plurality of objects; determining a region where at least one object among the plurality of objects is located, based on the acquired position information; and performing at least one of clipping and culling on data of the at least one object, based on the determined region.