| 摘要 |
Image processing apparatus (60) for rendering (i.e. coloring, texturing or shading) an image includes a tiling device (66) which divides the image into sub-regions or tiles. Two rendering devices (70A, 70B) are provided, and the tiles are allocated so that some are processed by one rendering device and some by the other. Polygons representing surfaces of objects to be displayed are tested against the tiles. If the surface falls into one sub-region only, the data is sent to one rendering device only. On the other hand, if the surface falls into two sub-regions being handled by the different rendering devices, then the data is sent to both rendering devices. The result is that a substantial proportion of the data need only be supplied to and processed by one rendering device, thereby speeding the operation of the apparatus. The outputs of the two rendering devices (70A, 70B) are subsequently combined by tile interleaving and image display circuitry (72).
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