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It was taking approximately 50 cycles to extract the vertex indices, calculate the vertex_header pointers and call tri_draw() for each three vertices - . Unrolled, it takes less than 100 cycles to extract, unpack, calculate pointers and call tri_draw() eight times. It does have a nasty jump-tabled switch. I'm sure that there's a better way... Code size of spu_render.o gets larger due to the extra constants and work in the inner loop, there are extra stack saves and loads because there are more registers in use, and an assert. spu_tri.o gets a little smaller. |
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| mesa | ||
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