FYI

QUAD Buffer stereo is only supported on the NVIDIA's Pro range the Quadro FX 
cards, they do not support this on consumer cards 


Gordon
Product Manager 3d
__________________________________________________________
Gordon Tomlinson
Email  : gtomlinson @ overwatch.textron.com
__________________________________________________________


-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of Robert Osfield
Sent: Tuesday, May 12, 2009 6:27 AM
To: [email protected]; OpenSceneGraph Users
Subject: Re: [osg-users] Stereo Problem

Hi Olfat,

The errors you are getting are due to lack of QUAD_BUFFER stereo support in the 
driver.  This is pretty poor considering that you've got the NVidia 3D glasses.

Perhaps the NVidia drivers only provide a hack for 3d support in 3rd party 
apps, as they do for games.  I would be worth contacting NVidia about it as 
frankly selling hardware but not supporting quad buffer stereo in the drivers 
is just plain incompetent/fraudulent.

Robert.

On Tue, May 12, 2009 at 10:52 AM, olfat ibrahim <[email protected]> wrote:
>
> Also i wanted to clarify that when i tried to use the command line :
>
> osgviewer cow.osg --stereo QUAD_BUFFER
>
> it gives me the following  :
>
> Warning: Could not find plugin to read objects from file "QUAD_BUFFER".
> Error: [Screen #0] GraphicsWindowWin32::setPixelFormat() - No matching 
> pixel for mat found based on traits specified
>   GraphicsWindow has not been created successfully.
> Error: [Screen #0] GraphicsWindowWin32::setPixelFormat() - No matching 
> pixel for mat found based on traits specified
>   GraphicsWindow has not been created successfully.
> Error: [Screen #0] GraphicsWindowWin32::setPixelFormat() - No matching 
> pixel for mat found based on traits specified
>   GraphicsWindow has not been created successfully.
> Viewer::realize() - failed to set up any windows
> Error: [Screen #0] GraphicsWindowWin32::setPixelFormat() - No matching 
> pixel for mat found based on traits specified
>   GraphicsWindow has not been created successfully.
> Viewer::realize() - failed to set up any windows
>
> --- On Tue, 5/12/09, Robert Osfield <[email protected]> wrote:
>
> From: Robert Osfield <[email protected]>
> Subject: Re: [osg-users] Stereo Problem
> To: [email protected], "OpenSceneGraph Users"
> <[email protected]>
> Date: Tuesday, May 12, 2009, 4:54 AM
>
> Hi Ibrahim? Olfat?  Could you sign with your first name so we know how 
> to address you, thanks,
>
> On Tue, May 12, 2009 at 9:45 AM, olfat ibrahim 
> <[email protected]>
> wrote:
>> Hello
>>
>> Iam running my program with the option --stereo and the stereo seems 
>> to
> work
>> fine in the screen but i can not get my nvidia glass to start working 
>> with it can any one help me ?
>
> By default the OSG will use anaglyphic stereo when you enable stereo, 
> but it also supports a range of other stereo options.  For shutter 
> glasses you'll probably just need to request quad buffer stereo via:
>
>  osgviewer cow.osg --stereo QUAD_BUFFER
>
> For more command line details run
>
>   osgviewer --help
>
> And via env vars:
>
>   osgviewer --help-env
>
> Programatically you can enable stereo via osg::DisplaySettings (the 
> above command line options and env vars just set it.) See the 
> osgstreoimage example for an example of programmatically enabling 
> stereo.
>
> There is a big but... and that's does you graphics card/OpenGL driver 
> support quad buffer stereo.  I can't answer this as you've provide no 
> info w.r.t hardware/drivers you are using.  For NVidia it's just their 
> Quadro line that supports quad buffer stereo.
>
> Robert.
>
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.
> org
>
>
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