| 摘要 |
PURPOSE:To erase the hidden face of a three-dimensional graphic at a high speed by dividing a subject graphic into plural grid-oshaped blocks and using processors set in parallel to each other for each block to sort polygons for erasion of hidden faces. CONSTITUTION:A viewfield direction 1 is transmitted to processors 6 corresponding to blocks respectively by a host processor 8. Each processor 6 uses the information on the direction 1 sorts the polygons in the order of depths within a corresponding block stored in a local memory 9 of each processor 6 and then informs the end of the sorting process to the processor 8. The processor 8 calls out the processors successively at and after the one taking charge of the block having the largest distance from a visual point block 5 as soon as the sorting process is over. Then a polygon is drawn to a picture memory 10. The contents of the memory 10 are displayed to a display 11 when the polygon drawing process is through with all processors 6. |
