Re: [info-performer] Offscreen rendering on Linux: PBuffer and setFBConfig problem

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From: Tom Flynn (flynnt++at++engr.sgi.com)
Date: 08/23/2002 14:59:04

performer support for pbuffers isn't currently working under linux. we
need to rework some details inside performer so people don't get
unresolved symbols when running on a non-nvidia card.
-tom

On Fri, 23 Aug 2002, Alexandre Meyer wrote:

>
>
> Hi,
>
> I would like to use a PBuffer under Linux (extension GLX_SGIX_pbuffer on GForce4).
> I am able to create and use this kind of pbuffer without performer, so this extension
> works on my Linux box.
>
> With Performer my inspiration is the example file .../pguide/libpf/C/pbuffer.c
> With my code and with the pbuffer.c example I obtain this :
>
> PF Warning/Usage: pfWindow::open - window of type PFWIN_TYPE_PBUFFER - required
> GLXFBConfig is NULL - set with ::setFBConfig.
> and then a core dump!
>
> But I call the setFBConfig function and my argument is not NULL. ??
>
>
>
> The strange thing is in the file /usr/include/Performer/pr.h, if the system
> is Linux pfGLXConfig is defined by void*, that means setFBConfig take a void*
> as argument.
>
> Why "void*" and not "GLXFBConfigSGIX" as on SGI?
> That means GLX_SGIX_pbuffer extension is not implemented on Perf/Linux?
>
>
>
> I don't want to use this extension specially, I just want to do off-screen rendering
> on Linux with Performer, if someone has an other solution?
>
> Thanks,
> Alex
>
> --
> Alexandre Meyer <A.Meyer++at++cs.ucl.ac.uk>
> University College London, Virtual Environments and Computer Graphics Lab
> http://www.cs.ucl.ac.uk/staff/a.meyer
>
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