1. A graphics data processing method comprising: determining a guard band region, having a distance range in a viewing direction from a position of a virtual camera, outside a visualization 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, the at least one object including a plurality of vertexes, the determining the region including determining positions of the plurality of vertexes; and performing clipping on data of the at least one object, based on the determined region, the performing the clipping including, selecting a particular vertex from among the plurality of vertexes based on one or more vertexes among the plurality of vertexes being in the visualization region and one or more other vertexes among the plurality of vertexes being outside the guard band region, the selected particular vertex located between a first vertex and a second vertex, the first vertex in the visualization region, the second vertex outside the guard band region, and performing clipping on vertexes from the selected particular vertex to the second vertex outside the guard band region based on a determination that the selected particular vertex is within an interior of the guard band region, such that both a portion of the at least one object that is located outside the guard band region and a portion of the at least one object that is located between the selected particular vertex and an edge of the guard band region and within the interior of the guard band region are clipped.