[sldev] SSE/Vector stuff

[Dirk Moerenhout]

Output of 1.17.3.0
2007-07-07T16:30:19Z INFO: update_vector_performances: Vectorization
      : ENABLED
2007-07-07T16:30:19Z INFO: update_vector_performances: Vector
Processor      : SSE2
2007-07-07T16:30:19Z INFO: update_vector_performances: Vectorized
Skinning   : ENABLED

Output from my test 1.18.0.4 build:
2007-07-07T16:38:27Z INFO: update_vector_performances: Vectorization
      : ENABLED
2007-07-07T16:38:27Z INFO: update_vector_performances: Vector
Processor      : SSE2
2007-07-07T16:38:27Z INFO: update_vector_performances: Vectorized
Skinning   : ENABLED

BUT!

If you check the source (llviewerjointmesh_sse.cpp and
llviewerjointmesh_sse2.cpp) you'll find that if #LL_VECTORIZE is not
defined SSE and SSE2 call the non-SSE version.

In 1.18.0.4 it seems turned off by default. I guess same may apply to
1.17.3.0. So the log doesn't guarantee you you're actually using SSE.

Dirk aka Blakar Ogre

On 7/7/07, Nicholaz Beresford <nicholaz at blueflash.cc> wrote:
>
>  From what I saw it does a test run with and without
> at the beginning and then saves an option.  Dunno if
> that option is buried in the debug menus somewhere,
> I was just looking at the source diffs.   But the
> regular log should show a few new entries about
> "Vector" ...
>
>
> Nick
>
>
> Second Life from the inside out:
> http://nicholaz-beresford.blogspot.com/
>
>
> Dirk Moerenhout wrote:
> > Is it enabled? There's SSE stuff in 1.18.0.4 too but I don't think
> > it's on by default.
> >
> > Dirk aka Blakar Ogre
> >
> > On 7/7/07, Nicholaz Beresford <nicholaz at blueflash.cc> wrote:
> >>
> >> Did anyone notice the changes about SSE optimization
> >> in the 1.17.3 viewer?  I have not looked at them yet,
> >> but I've seen comments on my blog (and Linden blog also)
> >> that 1.17.3 was slow (e.g. with flexi prims) and that
> >> stuff is the only I've seen in the source diff that could
> >> account for that.
> >>
> >>
> >> Nick
> >>
> >> --
> >> Second Life from the inside out:
> >> http://nicholaz-beresford.blogspot.com/
> >> _______________________________________________
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>