| 摘要 |
A pixel processing unit reduces the number of pixels exterior to a primitive that must be rendered solely for the purpose of generating texture derivative information required to shade pixels within the primitive. In one embodiment, the alignment of group footprints is selected to reduce pixels exterior to primitives which must be calculated to generate texture derivatives. In another embodiment pairs of primitives from the same graphical surface sharing a common boundary are coalesced and shaded concurrently.
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