RE: [Openexr-devel] OpenEXR in OS X 10.4 ?

[Drew Hess]

Cool, thanks for the info!


On Wed, 30 Jun 2004, Jason Mitchell wrote:

> 
>    Format (i.e. 16 bit float) and dimension (i.e. 2D, rect, cube, volume)
> are orthogonal on all ATI hardware.
> 
>         -Jason
> 
> 
> 
> -----Original Message-----
> From: Drew Hess [mailto:address@hidden 
> Sent: Tuesday, June 29, 2004 10:16 AM
> To: gary demos
> Cc: address@hidden
> Subject: Re: [Openexr-devel] OpenEXR in OS X 10.4 ?
> 
> 
> 
> Hi Gary,
> 
> Nvidia's cards have supported half since the GeForce FX 5xx0 and Quadro FX
> 2000 and 3000 series, but for textures, only RECT textures were supported,
> and RECTs can't be interpolated.
> 
> The GeForce FX 6800 and Quadro FX 4000 (and their PCI-Express equivalents)
> have full support for half, including 2D, 3D and cube textures.  So on the
> new generation of cards, half is as good a datatype as anything else.
> 
> ATI's R3xx-based cards also support a 16-bit FP format that's mostly
> compatible, but not exactly the same, as half, but I don't know whether
> there are any limitations on which texture formats support it.
> 
> Here's a blurb from Apple's WWDC schedule, pointed out to me by a little
> birdie, which briefly mentions support of OpenEXR:
> 
> http://developer.apple.com/wwdc/descriptions/index.html#207
> 
> If anyone can attend that and report back to the list, I'd love to hear
> about it.
> 
> 
> -dwh-
> 
> 
> On Tue, 29 Jun 2004, gary demos wrote:
> 
> > 
> > Drew and all,
> > 
> > Apple has announced the 30" Large flat display, requiring the NVidia 
> > GEForce 6800 card.  Apparently the GEForce 6800 card is going to be 
> > supporting OpenExr half-16-float format,
> >  according to rumors.  Of course, ILM worked with NVidia on the 
> > half-16-float format.
> > 
> > As for which OS-X version, or which version of the 6800 NVidia card 
> > driver, I would also  like to know.  I would also like to see the 
> > half-16-float format supported directly to the
> >  screen (with appropriate scaling and gamma controls, like the Photoshop 
> > OpenExr plugin).
> >  I presume that the highest performance path to the screen will be 
> > OpenGL, but perhaps
> >  there will be a faster way to write to the screen without tearing, with 
> > double (or triple)
> >  buffering, and with keep-time picture sync and audio sync.  The 
> > "throw-it-to-the-screen-
> >  whenever-you-have-it" mode limits the quality of moving images played 
> > out.  This becomes
> >  even more challenging for bandwidth when 16-bits per color is used 
> > instead of 8-bits (although
> >  I presume the 30" display itself is still 8-bits as the previous 23" 
> > Apple HD Cinema display).
> > 
> > I am hopeful that the "movie mode" screen sync will be taken seriously 
> > when OpenExr  is supported for 24, 30, 60, and 72 frames per second 
> > image update and sync'd image refresh.
> > 
> > -Gary Demos
> > 
> > 
> > Drew Hess wrote:
> > 
> > >I'm hearing rumors that Apple is going to ship OpenEXR as part of OS
> > >X 10.4.  Unfortunately I don't have time to attend WWDC this week, 
> > >but apparently it's been mentioned in some of the developer sessions.
> > >
> > >Does anyone who can talk about it have more details?  I'm curious,
> > >and none of us who actually work on the project have heard anything 
> > >beyond the rumors :)
> > >
> > >If true, it's great news as far as we're concerned, by the way....
> > >
> > >
> > >-dwh-
> > >
> > >
> > >
> > >
> > >
> > >_______________________________________________
> > >Openexr-devel mailing list
> > >address@hidden
> > >http://lists.nongnu.org/mailman/listinfo/openexr-devel
> > >
> > >  
> > >
> > 
> > 
> > 
> > 
> 
> 
> 
> 
> 
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