[Public WebGL] WebKit 20-50% slower than Chrome/Minefield using large Float32Array Arrays

Vladimir Vukicevic [email protected]
Tue Feb 22 21:26:42 PST 2011

----- Original Message -----
> At 4:51 PM -0800 2/17/11, Kenneth Russell wrote:
> >Just FYI, further optimizations are planned for typed arrays in V8.
> >Currently certain optimizations are done for normal JavaScript arrays
> >that aren't in place for typed arrays.
> I'll say!
> I just tested Chrome v10.0.648.82 and I'm getting 98 models steps per
> second (without rendering) using regular arrays:
> http://visual.local/seasons/earth/model2d-reg-arrays.html
> and only 37 model steps per second using JavaScript Typed arrays:
> http://visual.local/seasons/earth/model2d.html
> However Chrome is blowing away Minefield: 4.0b12pre (2011-02-22)
> Regular/Typed 13/12.2 and WebKit v79303 Regular/Typed: 24.7/14.5.

I'm confused, what happened to "Minefield is reversed running about 41 fps using Typed and 28 fps using regular arrays"?  Did we regress something?

    - Vlad

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