Re: Fixed point cairo.. or no cairo?
- From: Michael Meeks <michael meeks novell com>
- To: Behdad Esfahbod <behdad behdad org>
- Cc: performance-list gnome org
- Subject: Re: Fixed point cairo.. or no cairo?
- Date: Tue, 22 Aug 2006 09:20:25 +0100
On Mon, 2006-08-21 at 23:11 -0400, Behdad Esfahbod wrote:
> This just confirmed that an optimized branch on x86 is basically free:
Which is to be expected; at least with a separate integer unit & FPU
[ all modern desktop CPUs ], but it's good to have measured that.
Of course the memory fetch may not be quite so cheap, and the space
cost of adding an extra byte ( -> 4/8 bytes for alignment ) at the end
of each matrix may be measurable; hence the suggestion of separating the
flags [ which would also avoid translation to/from cairo_matrix_t's ].
Regards,
Michael.
--
michael meeks novell com <><, Pseudo Engineer, itinerant idiot
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