| 摘要 |
PURPOSE:To display the graphic operating results of a user on a display at a higher speed by performing geometrical calculation required for display to an operated graphic only and using accumulated picture element information for the other graphics. CONSTITUTION:A graphic displaying device is constituted in such a way that geometrical calculation required for display is performed on all inputted graphics and the Z value graphic number, and color information of each graphic expanded into picture elements are respectively accumulated in a Z buffer 70, P buffer 80, and frame buffer I 90 against a small Z value. Then, when a displayed specific three-dimensional graphic is operated, geometric calculation required for display is performed against the operated graphic only and the picture element information accumulated in the buffers 70, 80, and 90 is used for the other graphics. Therefore, when a user operates a three-dimensional graphic, the graphic can be displayed at a high speed. |
