[Development] State of x86 SIMD in Qt
thiago.macieira at intel.com
Fri Dec 30 22:26:44 CET 2011
On Thursday, 29 de December de 2011 15.16.19, jason.barron at nokia.com wrote:
> Hi Thiago,
> > I can get started, but I need to know: how is this code tested? How can I
> > verify that things are working?
> The best way to test this is to run the lancelot autotests to verify that
> the output of the raster engine is the same before and after. The code for
> the baseline server is in Qt, but the baselines we are currently using
> inside Nokia are not (for lack of public infrastructure I guess) so you'll
> have to generate your own baseline (before the patch) and then test it
> (after the patch). The tests are located here:
> the baselineserver is here:
> The draw helpers are mostly used in blending code so these lancelot tests
> (eg: porter_duff.qps) probably offer the best coverage in this area.
I'll run the regression tests next year.
Are there benchmarks for this code? After my work of yesterday and today,
we've got a full set of draw helpers compiled with AVX, so I'd like to give it
a go on my Sandy Bridge laptop.
I'd also like to compare the previous SSE2 to the current SSE2 code.
Thiago Macieira - thiago.macieira (AT) intel.com
Software Architect - Intel Open Source Technology Center
Intel Sweden AB - Registration Number: 556189-6027
Knarrarnäsgatan 15, 164 40 Kista, Stockholm, Sweden
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