[visionegg] Re: 10-bit framebuffers

Hi Andrew,

Well, I got this not-so-useful reply from ATI:

>Regarding 10-bit frame buffer support.
>
>The RADEON 9800 products all offer 10-bit frame buffer support.  In
regards >to developing with OpenGL you can refer to the Developer
Relations >department.  Please visit their portion of the ATI website at
>http://www.ati.com/developer/index.html
>
>
>Regards,
>
>Kyra Plouffe
>Customer Care
>ATI Technologies, Inc.
>http://www.ati.com

ATI seem to lump 10-bit frame buffer support under the term
"Smartshader":

http://ati.com/companyinfo/glossary/includes/list.html#smartshader

From what I can tell, "Smartshader" has been supported in both D3D and
OpenGL since the release of ATI's Catalyst 3.8 drivers:

http://www2.ati.com/drivers/catalyst_38_release_notes.html#168664

This occurred back in Oct. 2003:

http://www.ati.com/companyinfo/press/2003/4694.html

less than a year ago. So, perhaps the 10 bit framebuffers are now
supported in the OpenGL drivers. Either way, we're about to buy the
card. We'll give it a try and report what we find.

Cheers,

Martin Spacek
PhD student, Graduate Program in Neuroscience
Dept. of Ophthalmology and Visual Sciences
University of British Columbia, Vancouver, BC, Canada
604-875-4555 ext. 66282
mspacek@xxxxxxxxxxxxxxx
http://swindale.ecc.ubc.ca

----- Original Message ----- 
From: "Andrew Straw" <astraw@xxxxxxxxxxx>
To: <visionegg@xxxxxxxxxxxxx>
Sent: Thursday, July 29, 2004 11:57 PM
Subject: [visionegg] Re: 10-bit framebuffers


Martin Spacek wrote:

>Hello,
>
>There's some mention of 10-bit framebuffer support on the website.
We're
>thinking of getting the ATI Radeon 9800, which claims to have both 10
>bit DACs and 10 bit framebuffers, and using this with Vision Egg. Does
>anyone have any experience with this? Can we expect to get 2^10 shades
>of grey, or are there still OpenGL driver problems as mentioned on the
>site?
>
>
>
I've tried and failed to get the 10 bit framebuffers to work in Windows
using OpenGL on both the Radeon 9800 Pro and the Matrox Parhelia.  This
was over a year ago now, though, so times may have changed.  There was a
thread about this on the psychtoolbox list with myself and Jon Peirce,
among others, sometime last year, if you want to read further.

Cheers!
Andrew

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