| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem in a conventional image generating device using Z buffer method that the speeding up of both calculating processing and buffer read/write is insufficient to attain an increase in speed of calculating processing and buffer read/write. <P>SOLUTION: A buffer 16 divides a screen formed of a plurality of pixels arranged in a lattice shape into a plurality of buffer blocks, and stores depth values and luminance values thereof in buffer blocks unit with buffer block numbers assigned thereto, respectively. A cache part 13 receives the read address or write address of a buffer corresponding to a pixel position, calculates the buffer block number corresponding to the input address, and reads and outputs, when the calculate buffer block number is stored in a cache memory 14, the depth value corresponding to the pixel position from the cache memory 14 to a drawing circuit 12, or writes the depth value and luminance value from the drawing circuit 12 to the cache memory 14. <P>COPYRIGHT: (C)2004,JPO</p> |
