Re: [VirtualGL-Users] Error: Xlib: extension "GLX" missing on display":1.0".

[Adam T. <vir...@ad...>]

Thanks, I had missed that in the docs. I tried it with vglrun, but I'm now
getting a permissions error:

[vnc@xenon vnc]$ vglrun suma

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

[VGL] Could not open display :0.
[vnc@xenon vnc]$ echo $DISPLAY
:1.0
[vnc@xenon vnc]$ vglrun -d $DISPLAY suma

Xlib:  extension "GLX" missing on display ":1.0".
trying lame single buffer visual
Warning: trying lame single buffer visual
Xlib:  extension "GLX" missing on display ":1.0".
Error: no good visual


Can you advise?

Thanks,
-Adam


On 4/30/07, DRC <dco...@us...> wrote:
>
>  Are you invoking the OpenGL application with
>
> vglrun {application}
>
> ??
>
> TurboVNC (or any VNC, for that matter) does not support GLX, thus you have
> to use VirtualGL to redirect the GLX commands from the application to the
> "real" X server, which is attached to the 3D hardware.  VirtualGL then reads
> back the rendered 3D frames from the 3D hardware and draws the frames as 2D
> X Images in TurboVNC.
>
> NoMachine NX does support the GLX extension, which is why your application
> works in that environment without invoking vglrun.  However, NX's
> implementation of GLX is not hardware-accelerated, so you would still need
> to use VirtualGL and invoke the application with vglrun in order to get 3D
> hardware acceleration in NX.
>
> The upcoming VirtualGL 2.0.1 release has more clear documentation on how
> to use TurboVNC with VirtualGL.  You can get a sneak preview of this here:
> http://www.virtualgl.org/vgldoc/2_0/#hd0010
>
> The instructions in this new documentation should be applicable to VGL 2.0as well.
>
> [-=DRC=-]
>
>
>  ------------------------------
> *From:* vir...@li... [mailto:
> vir...@li...] *On Behalf Of *Adam Thomas
> *Sent:* Monday, April 30, 2007 8:01 AM
> *To:* vir...@li...
> *Subject:* [VirtualGL-Users] Error: Xlib: extension "GLX" missing on
> display":1.0".
>
> Hello,
>
> I'm trying to install TurboVNC on a Redhat 9 box with an  NVIDIA GPU
> Quadro4 750 XG card and NVIDIA driver version 1.0.9631. I'm working with
> the 2.0-el3 rpm of VirtualGL, 1.10.2 for turbojpeg, and 0.3.2 for
> turbovnc. The TurboVNC client (also 0.3.2) is running on Windows XP.
>
> OpenGL application work fine on the console and through NX (
> http://www.nomachine.com/). However when I try to launch an OpenGL
> application inside a turboVNC window, I get the following error:
>
> Xlib:  extension "GLX" missing on display ":1.0".
> trying lame single buffer visual
> Warning: trying lame single buffer visual
> Xlib:  extension "GLX" missing on display ": 1.0".
> Error: no good visual
>
> Can anyone advise me on what's going wrong?
>
> Thanks,
> -Adam Thomas
>
>
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