1. An apparatus for generating computer graphics image for 3D, the apparatus comprising: a number computing unit that computes, based on three-dimensional display information, a number of pieces of virtual viewpoint models to be generated; a generation unit that generates, based on computer graphics model data, the virtual viewpoint models for the number of pieces computed by the virtual viewpoint model number computing unit; an arrangement information computing unit that computes, based on generation image information included in the three-dimensional display information, arrangement information to be used for arranging a group of the virtual viewpoint models within a computer graphics space; an arrangement unit that arranges, within the computer graphics space, data pertaining to the group of the virtual viewpoint models generated by the virtual viewpoint model generation unit in accordance with the arrangement information computed by the arrangement information computing unit; an information computing unit that computes virtual viewpoint information about each of the virtual viewpoint models, based on information regarding a light source and viewpoints to be generated as a computer graphics image and the three-dimensional display information; an information application unit that applies the virtual viewpoint information computed by the virtual viewpoint information computing unit to each of the corresponding virtual viewpoint models included in the group of the virtual viewpoint models computed by the virtual viewpoint model computing unit; an area information computing unit that computes a rendering area for each of the virtual viewpoint models based on the three-dimensional display information; and a rendering unit that renders the computer graphics image based on computer graphics space information, which includes the virtual viewpoint information about each of the virtual viewpoint models, and virtual viewpoint model group information, which includes the information regarding the light source and the viewpoints to be generated as the computer graphics image, acquired from the virtual viewpoint information application unit and on the rendering area computed by the virtual viewpoint model area information computing unit.