| 摘要 |
A device (1) for presenting 3D graphics comprises means for defining one or more polygons for objects to be presented, means (2, 3, 4) for bump mapping, which comprises means (6) for storing a bump map and means (5) for fetching the bump map from the bump map storing means (6), and means for defining a direction vector of bump map normal at each vertex of a polygon, and means (13, 14, 17, 18, 19) for rasterizing images on a display device. The device (1) comprises further means (7) for producing an angle value which is used to rotate the direction vector of the bump map.
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