cb887cfc67
The cost of performing relocations outweigh the advantages of using the blitter for solids with lots of rectangles. References: Bug 22127 - [UXA] 50% performance regression for XRenderFillRectangles https://bugs.freedesktop.org/show_bug.cgi?id=22127 By using the 3D pipeline we improve our performance by around 4x on i945, measured by the jxbench microbenchmark, and a factor of 10x by short-cutting to the 3D pipeline for blended rectangles. Before, on a i945GME: 19982.412060 Ops/s; rects (!); 15x15 9599.131693 Ops/s; rects (!); 75x75 3803.654743 Ops/s; rects (!); 250x250 6836.743772 Ops/s; rects blended; 15x15 1443.750000 Ops/s; rects blended; 75x75 495.335821 Ops/s; rects blended; 250x250 23247.933884 Ops/s; rects composition (!); 15x15 10993.073048 Ops/s; rects composition (!); 75x75 3595.905172 Ops/s; rects composition (!); 250x250 After: 87271.145975 Ops/s; rects (!); 15x15 32347.744361 Ops/s; rects (!); 75x75 5884.177215 Ops/s; rects (!); 250x250 73500.000000 Ops/s; rects blended; 15x15 33580.882353 Ops/s; rects blended; 75x75 5858.811749 Ops/s; rects blended; 250x250 25582.317073 Ops/s; rects composition (!); 15x15 6664.728682 Ops/s; rects composition (!); 75x75 14965.909091 Ops/s; rects composition (!); 250x250 [suspicious] This has no impact on Cairo, but I have a suspicion from watching xtrace that Qt likes to blit thousands of 1x1 rectangles with the same colour. However, we are still around 2-3x slower than the reported figures for EXA! Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> |
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| .. | ||
| Makefile.am | ||
| uxa-accel.c | ||
| uxa-glyphs.c | ||
| uxa-priv.h | ||
| uxa-render.c | ||
| uxa-unaccel.c | ||
| uxa.c | ||
| uxa.h | ||