[Kalzium] Kalzium molecule viewer

[Alexandr Goncearenco]

On Saturday 26 May 2007, Benoît Jacob wrote:
> On Saturday 26 May 2007 14:04:25 Alexandr Goncearenco wrote:
> > Can Kalzium Moleculeviewer be used as a KPart?
>
> It already is a KPart, and Carsten just told me today that it even
> integrates in Konqueror.

Oh thanks, that's a very good news!
I'll try that.

> Can you upgrade to the latest Xorg and Mesa (6.5.3) ? If the bug still
> shows, please file a bug report either at Mesa or at dri-devel (i'm not
> sure what's more appropriate). In that case, if you want, I can also try to
> see if it's possible to modify our source code so that we don't hit this
> driver bug. If you'd like me to do that, I need a backtrace, so run kalzium
> in gdb and when the assert fails use the bt command.

Thanks, Benoit,

that's definitely radeon driver's or ati Mesa problem. Avogadro

in GLWidget::initializeGL():
glEnable( GL_LIGHTING );

triggers this error. So I do not think it can be easily resolved by commenting 
something out in Avogadro.

that's the backtrace you asked:
............
#4  0xb5ade42b in __assert_fail () from /lib/i686/cmov/libc.so.6
#5  0xb4fb45f7 in radeonUpdateSpecular (ctx=0x8cba4f0) at radeon_state.c:750
#6  0xb4fb610b in radeonEnable (ctx=0x8cba4f0, cap=2896, state=1 '\001') at 
radeon_state.c:1876
#7  0xb51006aa in _mesa_Enable (cap=2896) at main/enable.c:997
#8  0xb686df1c in Avogadro::GLWidget::initializeGL (this=0x8c3c540) 
at /home/kde-devel/kde/src/KDE/kdeedu/kalzium/libavogadro-kalzium/src/glwidget.cpp:212
#9  0xb68a48c7 in QGLWidget::glInit (this=0x8c3c540) at qgl.cpp:3062
.............

Some investigation in dri-devel tells that the assertion is bogus (!) and can 
be removed.
http://www.mail-archive.com/dri-devel%40lists.sourceforge.net/msg15082.html

I will try Mesa 6.5.3-1 from debian experimental, which is there since May'21. 
And an updated 2.6.21 kernel. I'll report success here, if you wish. 

Can I enable software rendering for Avagadro somehow, while leaving the whole 
system intact? 
(I just wish to stick to debian unstable builds of main libs as much as 
possible).

Alexander