[Webkit-unassigned] [Bug 75522] Enable IPP for FFTFrame

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=75522





--- Comment #9 from xingnan.wang at intel.com  2012-01-05 20:46:06 PST ---
(In reply to comment #8)
> (In reply to comment #7)
> > Thanks for running the performance tests.  It would be good to know if we can use the "fast" option and get the maximum performance benefit.
> > 
> > When you have time, can you test the "fast" option with Raymond's latest layout test.  His patch should be committed soon, but you can grab his test and try it locally on your machine:
> > https://bugs.webkit.org/show_bug.cgi?id=75126
> > 
> > Thanks!
> 
> That`s OK~

I tried the convolution layout test and failed with the result:
*******
Tests ConvolverNode processing a mono channel with mono impulse response.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

PASS Initial latency of convolver is silent.
FAIL Triangular portion of convolution is not incorrect.  Max deviation = 2.0867834820236123e-7
FAIL First part of tail of convolution is not sufficiently small: 0.00244140625
PASS Rendered signal after tail of convolution is silent.
FAIL Test signal was not correctly convolved.
PASS successfullyParsed is true

TEST COMPLETE
******

I found the threshold values are experimental, the "Max deviation" and "small" I got are only larger than the values in test script a little. I wonder to know whether such values are tolerable?

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