[cairo] [PATCH] Commented-out uses of fbCompositeCopyAreasse2()

André Tupinambá andrelrt at gmail.com
Mon Jul 21 18:42:34 PDT 2008


The function fbCompositeCopyAreasse2() was commented-out in SSE2
fast-path because the cairo-perf subimage ran with slowdown. But
checking the code of subimage_perf I realize that it copy only a 2x2
image. This image is so small to verify the speedup of SSE2 code, and
it's really slower than the C path.

I change the subimage perf from (cr, 2, 2, 4, 4) to (cr, 2, 2,
width-4, height-4) and the SSE2 fast-path runs something like 1.5x

So, in attach there is a patch enabling the fbCompositeCopyAreasse2()
function. There is a small compatibility issue fix in pixman-sse.c


André Tupinambá
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