OGL acceleration question - RE: +++ Slower Rendering in XSI 4.0 +++ 2004-06-08 - By Bernard Lebel
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Also, rapid motion can speed up hair rendering quite a bit.
Bernard
-- -- Original Message -- --
From: "kim aldis" <kim@(protected)>
To: <XSI@(protected)>
Sent: Tuesday, June 08, 2004 3:36 PM
Subject: RE: OGL acceleration question - RE: +++ Slower Rendering in XSI 4.0
+++
> What results you get depend on what you're rendering as well as what
> graphics card you're using. What areas you'll see speedups in I've not
> investigated but I'd expect shadows, reflections and refractions to be
> faster and there's a good chance that global illumination might speed up
> with some of the newer cards. This is just guesswork, though.
> I did some tests on some heavy scenes on my laptop - vaio, 2.7Ghz,
> 1Ghz, geforce 5600 - and saw frame times drop to about half of what they
> were. Toon shader, no reflection, lambert, soft shadows.
>
> As far as reliability is concerned, you may have to be careful about
> slight differences between cards. Maybe.
>
> Most of what I've been doing here I've been concentrating on rapid motion.
> For all scenes, it's worth becoming familiar with this optimisation. It
will
> considerably speed up motion blur, especially with dense scenes. I get
> considerable improvements without blur too, but you should be aware of at
> least one limitation, secondary rays can't be turned off with fast motion
> on.
>
>
>
> > -- --Original Message-- --
> > From: owner-xsi@(protected)
> > [mailto:owner-xsi@(protected)] On Behalf Of Michael Klein
> > Sent: 08 June 2004 14:22
> > To: XSI@(protected)
> > Subject: OGL acceleration question - RE: +++ Slower Rendering
> > in XSI 4.0 +++
> >
> > What does OGL accel. exactly speed up?
> >
> > I did a test with my slower rendering scene (glossy
> > reflections) and the speedup with my OGL Quadro FX3000 was 9
> > seconds (5:13 without, 5:04 with OGL accel.).
> >
> > Is it save to use OGL accel.? I remember some glitches and
> > strange artefacts in an older XSI version and never touched
> > that feature again.
> >
> > PoVR
> >
> > -- --Original Message-- --
> > From: owner-xsi@(protected)
> > [mailto:owner-xsi@(protected)] On Behalf Of Olivier jeannel
> > Posted At: Tuesday, June 08, 2004 2:29 PM Posted To: XSI
> > Conversation: +++ Slower Rendering in XSI 4.0 +++
> > Subject: Re: +++ Slower Rendering in XSI 4.0 +++
> >
> >
> > By OGL acceleration, do you mean the use of the GPU of an FX400 ?
> >
> > -- -- Original Message -- --
> > From: "+" <softimage@(protected)>
> > To: <XSI@(protected)>
> > Sent: Tuesday, June 08, 2004 2:19 PM
> > Subject: Re: +++ Slower Rendering in XSI 4.0 +++
> >
> >
> > > jordibares wrote:
> > >
> > > >Mental ray 3.3 has been incredibly faster in our tests (not using
> > reflections and glossy) but opengl acceleration, fine
> > displacement and motion blur all together.
> > > >
> > > >We say jumps from 40 minutes a frame to 5 min. a frame.
> > > >
> > > >
> > >
> > > that's nice... can you tell something about the machines you're
> > > running (cpu, graphicscards, etc...) or is that a top-secret thingy
> > > like in the formula1-championship...
> > > ---
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