[ODE] Presentation and question

[gl]

Hi, (quick dive in)

check out D3DCREATE_FPU_PRESERVE in the D3D docs.
--
gl

----- Original Message ----- 
From: "Adam D. Moss" <adam@gimp.org>
To: <ode@q12.org>
Sent: Saturday, July 05, 2003 6:19 PM
Subject: Re: [ODE] Presentation and question


> DjArcas wrote:
> > This is exactly what I've been getting, and it's causing me headaches.
If
> > you search the list for QNAN (NOT A NUMBER, no idea what the Q's for),
then
> > you'll see me shouting lots about it. I've yet to come up with a
soution -
> > but increasing the CFM does seem to make it happen less often.  Also,
it,
> > oddly, possibly coincidentally, it rarely happens when using ODE's
> > drawstuff, but a lot more often when using D3D.
>
> Ohh, the D3D observation rings a bell.  I remember reading on
> one mailing list (this one?) that D3D calls can (supposedly by
> design) leave some obscure floating point flags/registers in an
> undefined state upon return (avoiding a save/restore for reasons
> of speed), which 'usually' doesn't cause problems but 'sometimes'
> can (I was horrified to read this).
>
> There's an official way to ask D3D not to be so cavalier, which
> usually solves such problems.
>
> I don't remember the details off the top of my head (I don't use
> D3D), but it's something to look for.
>
> --Adam
> -- 
> Adam D. Moss   . ,,^^   adam@gimp.org   http://www.foxbox.org/   co:3
> "When I was young, I would break down and cry whenever mom made me
> throw an empty toilet paper tube in the trash can. I just imagined
> it sitting at the dump, all cardboard and sad." -- T.Farnon
>
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