| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game system and an information storing medium which can form a real image with a small loading for processing. SOLUTION: The image of an object OB after geometrical processing is temporarily drawn on an intermediate buffer and the image of the intermediate buffer is drawn on a frame buffer. A primitive screen PS wherein the drawing position DP is specified by the three-dimensional information of the object OB and the image of the intermediate buffer is mapped is drawn on the frame buffer. In the case when a plurality of primitive screens corresponding to a plurality of objects are drawn on the frame buffer, based on the depth value of each primitive screen, a negative screen is erased. A plurality of primitive screens whose drawing position are specified based on the three-dimensional information of one object are drawn on the frame buffer to express a shadow. After an image effect processing is applied on the image of the intermediate buffer and it is synthesized with the image of the past frame, it is drawn on the frame buffer. The images of the objects after geometrical processing are drawn on the intermediate buffer on every scattered frame.</p> |
