作者: Bob C. Liang , Bruce C. Hempel , Gregory D. Laib
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摘要: A method for traversal of primitives in a graphics display system includes calculating pick data predetermined primitive, testing the primitive invisibility, exiting to next order if invisibility step is positive, detectability, detectability test false when performed correlation purposes, determining whether transformation environment update required, recalculating binding attributes and processing subsequent orders draw primitive. Also, eliminate unnecessary storing registers an execute structure processed, number are set aside control flags selectively store into stack. If flag zero contents corresponding register will be stored on one, indicating that has been stack, not again, thus saving time execution traversal.