Actually, to narrow it down, the problem
is seems to be between 1.0rc4 and 1.1 …
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Gian Lorenzetto
Sent: Tuesday, 29 August 2006 9:59
AM
To: osg users
Subject: RE: [osg-users] Problem
loading model on 1.1rc1
Robert,
My test program works with 1.0rc4, but
not 1.1 or 1.1.1rc1
I’ve tested 1.1.1rc1 both with my
own build of OSG and with the Win32 binaries from the web site. 1.0rc4 is my
own build and 1.1 is from the Win32 binaries on the website.
So, the change causing this issue seems
to be between 1.0 and 1.1 … can others confirm this?
Gian
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Robert Osfield
Sent: Sunday, 27 August 2006 6:21
AM
To: osg users
Subject: Re: [osg-users] Problem
loading model on 1.1rc1
Hi Guan et. al.
On 8/26/06, Gian Lorenzetto
<[EMAIL PROTECTED]> wrote:
Yes, I think you'll find that cessna.osg does not use display lists and
that cow.osg does. Not sure about cessnafire.osg, but I'd guess that it does,
cince it does not work.
I'm still slowly chasing this one in wxWidgets, but perhaps the problem may be
more obvious with GLUT?
The use of display lists being a problem suggest to me that the compile
traversal is the problematic part. Note the that compile traversal
is the default init traversal done by SceneView. If init is not already
called, SceneView calls it on the first frame rendered. The init
traversal uses OpenGL so it must have a valid graphics context.
Calling init prior to load the scene graph will result in a effectively a
nothing happening during the init traversal, but, and this might be the
keypart, it will prevent SceneView from calling its init again so will prevent
the precompile.
I think its also important to note that the OSG has changed the way it uses
SceneView::init() between 1.0 and the present day, so this its very likely that
its influence on events is purely a symptom rather than a cause.
As to what the cause of the problem is... I don't know. Narrowing down
the versions which worked and don't work would be very useful, and may well be
the key to unlocking this problem.
Could you all enumerate which versions worked and which version don't.
Robert.
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