[ODE] Particle/cloth/skeleton (was: Re: Choleski factorization)

[Gary R. Van Sickle]

gl wrote:

> > Be nice for all us win guys, that's for sure : ).  There is some processor
> > specific optimisation going on in D3DX (the DX utility library that
> provides
> > quat, matrix and various vector classes/functions, amongst others), and
> yes,
> > you do get it transparently and its updated over time.  Using that library
> > doesn't tie you to any other parts of DX in any way (eg. there are no
> > rendering dependencies).
> >
> > It's not clear though exactly what they've optimised - their vec3
> > equivialent doesn't use padding, so they probably only accelerate a few
> > complex operations.

There's a 4-D vector in D3D as well though.

> >  Matrices should be (you can use an aligned version),
> > not sure about quats.  They do intend to keep adding optimisations in key
> > areas though.
 
> I should also mention that you would also automatically get support for
> AMD's 3DNow.

And at *runtime*, not compile time.  This idea sounds better all the time ;-).
 
-- 
Gary R. Van Sickle
Brewer.  Patriot.