[Plib-users] Fwd: Re: flightgear problem

[pieter b. <xa...@gm...>]

greetings,

behold, a problem propably related to plib..
in addition: FlightGear _does_ work when I downgrade mesa, but I lose 3d
acceleration by doing this.. is there a problem with plib and mesa?

kind regards,
xas

----------  Forwarded Message  ----------

Subject: Re: flightgear problem
Date: Thu, 23 Aug 2001 12:13:13 -0500
From: Cameron <ca...@un...>
To: pieter bonne <xa...@gm...>
Cc: fli...@li...

* xa...@gm... [2001.08.23 04:52]:
: Hello there!

Hello.  I'm Cc'ing this to the flightgear-users@ list.

: I get a rather mysterious startup-error with both hand-compiled and
: pre-compiled(mkd) versions of FlightGear 0.7.8 :
:
: bash-2.04$ fgfs
: FlightGear:  Version 0.7.8
:
: Scanning for root: command line
: fg_root = /usr/local/lib/FlightGear
: Reading global preferences
: Reading properties from /usr/local/lib/FlightGear/preferences.xml
: Base is /usr/local/lib/FlightGear/preferences.xml
: Dir is /usr/local/lib/FlightGear
: Reading properties from /usr/local/lib/FlightGear/keyboard.xml
: Base is /usr/local/lib/FlightGear/preferences.xml
: Dir is /usr/local/lib/FlightGear
: Reading properties from /usr/local/lib/FlightGear/joysticks.xml
: Finished Reading global preferences
: Processing command line arguments
: Opening a window: 800x600
: Mesa DRI VoodooBanshee 20010501 x86/MMX
: Max texture size = 256
: Depth buffer bits = 16
:
: >> FATAL: ssgInit called without a valid OpenGL context. <<

This is really a plib problem that affects FlightGear.  Plib always
checks for a valid GL context before it begins rendering, and it's
obviously failing.  We haven't quite figured out what's causing this.

: I run mandrake8, heavily customized. kernel 2.4.8enterprise (mandrake
: package update), bleeding edge version of XFree4.1 and Mesa-3.4.2-3 &
: plib-1.4.2-1 (else I wouldn't have been able to compile I believe? ;)..
: One interresting sidenote is that Quake3, Rune, Heretic (1 and 2), gltron
: and other opengl accelerated programs (like xmms visualisations ie) all
: work with this configuration!! Could you help me out here?
:
: Thanks on forehand..
: -xas- (aka Pieter Bonne)

All reports we've had before now where specific to RedHat, but you are
using Mandrake...interesting.  All I can tell you is that some folks
have had success downgrading Mesa.  I think one person had a conflict
between the xfree4 mesa libs and the "official" mesa libs.  i haven't
experienced this problem, myself.

The easiest way to test this is to use a plib example (from the
sources).  Once the plib examples work, FlightGear will work.  I will
try to add a FAQ entry for this (even though I don't know the solution
to the problem).

You may also want to join the plib-users@ list to get some help with
plib internals.  I'm baffled at why Quake3 and Rune will work, but plib
apps won't.  :-/
--
cameron
[ Why are there interstate highways in Hawaii? ]

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