[cairo] Transform optimization

André Tupinambá andrelrt at gmail.com
Wed Nov 5 15:27:17 PST 2008

Hi everyone,

I'm searching for some opportunities to optimize other pieces of code,
and I'm working now with the transformation code. Checking with VTune,
I saw that a great hotspot at fetching the pixel call (do_fetch). So I
tried to reduce this fetch, checking if I just read this pixel before,
and works well for magnifying (about 2x in Core2 and 1.66x in Turion).

Please check the patch...


André Tupinambá
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