[Xprint] Re: SuSE and Mesa/GLX...

[Roland Mainz]

Egbert Eich wrote:
>  > Is there a specific reason why libGL.so on SuSE tries to tranfer giant
>  > images over the wire when the remote Xserver supports the GLX extension
>  > ?
>  >
>  > After some resarch I found that my problem is related to the issue that
>  > SuSE uses "/usr/lib/GL/libGL.so.1.4.mesasoft" for "/usr/bin/libGL.so"
>  > instead of "/usr/lib/GL/libGL.so.1.2.xf86_glx":
>  > -- snip --
>  > % ls -1 /usr/lib/GL/libGL.so.1.*
>  > /usr/lib/GL/libGL.so.1.2.xf86_glx
>  > /usr/lib/GL/libGL.so.1.4.mesasoft
>  > -- snip --
>  > This has two sideeffects:
>  > 1. Using GLX on SuSE on a remote framebuffer _always_ uses Mesa which is
>  > bad, esp. when you have a Sun ZULU framebuffer (XVR-4000) on the other
>  > end which is much faster than anything on the Linux side.
>  > 2. Printing using the OpenGL API via the Xprint server (which now
>  > supports the GLX extension) results in transfers of _GIGANTIC_ images
>  > instead if just the OpenGL rendering instructions.
>  >
>  > Egbert:
>  > Any idea how to solve that ?
> 
> This must be SUSE 8.2 or older as mesasoft was only required for XFree86 3

Yeah, this is plain, old, stock SuSE 8.2/x86...

> which was dropped after that.

So SuSE >= 9.0 does not have that problem anymore (e.g. then the GLX
extension in the Xserver does all the work, not the client (in the
MesaSoft case)), right ?

> There should be a link from the libGL.so.1 to the GLX version of libGL.
> I don't know why it doesn't exist.

The link from /usr/bin/libGL.so to /usr/lib/GL/libGL.so.1.4.mesasoft is
there... but it references the mesasoft library, not the GLX one... and
there the trouble begins... ;-(

> There is a script that fixes the links. Do: 'switch2xf86_glx' to
> set the links correctly.

Nice... that solves the problem, too (instead of manually adjusting the
soft link) ... - thanks! :)

----

Bye,
Roland

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