Hi all: For some years now (ever since the switch of PDL::Graphics::TriD
to POGL) I've been trying to get TriD working. The problem I have is that
on running 'demo 3d' my machine crashes *hard*, necessitating a full
power cycle on the machine I'm running the X server on, even if I run
'demo 3d' on a remote machine with an X window exported.
Needless to say, having to manually cycle the power between each failure
makes the debug loop so long that I've not had the time to look into it
much.
In the past (before POGL) I was able to use PDL::Graphics::TriD for some
nice orbit geometry visualizations--I'm trying to regain this capability!
In my most recent attempt, I upgraded to the most recent perl, PDL and
POGL:
perl v5.15.9
PDL-2.4.10_003
OpenGL-0.66
I'm running on CentOS 5.8 (which is essentially RedHat Enterprise Linux
5.8)
With the above setup, after several machine crashes and power cycles,
I'm able to determine that when running this script (the first demo):
--------------------------------------------------------------------
use PDL;
use PDL::Graphics::TriD;
use PDL::Graphics::TriD::Image;
# Number of subdivisions for lines / surfaces.
$size = 25;
$cz = (xvals zeroes $size+1) / $size; # interval 0..1
$cx = sin($cz*12.6); # Corkscrew
$cy = cos($cz*12.6);
line3d [$cx,$cy,$cz]; # Draw a line
--------------------------------------------------------------------
The lockup occurs in line3d at the call to glutSwapBuffers(); in GL.pm
line 939 (see the stack trace attached).
Before this, there is an error message:
--------------------------------------------------------------
libGL error: open DRM failed (Operation not permitted)
libGL error: reverting to (slow) indirect rendering
freeglut (trid.pl): Unable to create direct context rendering for window
'GLUT TriD'
This may hurt performance.
--------------------------------------------------------------
This error message also occured when testing OpenGL-0.66, but did not seem
to cause any problems.
Does anyone have any ideas of what might be wrong or how to track it down?
I'd like to be able to use TriD, but have not been able to for at least
two years under several versions of CentOS 4 and 5 on both 32 and 64 bit
PC architectures.
Any thoughts welcome!
Thanks,
Doug Hunt
[email protected]
Software Engineer
UCAR - COSMIC, Tel. (303) 497-2611
. = PDL::Graphics::TriD::Window::display(ref(PDL::Graphics::TriD::Window))
called from file
'/tools/lib/perl5/site_perl/5.15.9/x86_64-linux/PDL/Graphics/TriD/GL.pm' line
818
. = PDL::Graphics::TriD::Window::twiddle(ref(PDL::Graphics::TriD::Window))
called from file
'/tools/lib/perl5/site_perl/5.15.9/x86_64-linux/PDL/Graphics/TriD.pm' line 972
. = PDL::Graphics::TriD::twiddle_current() called from file
'/tools/lib/perl5/site_perl/5.15.9/x86_64-linux/PDL/Graphics/TriD.pm' line 795
. = PDL::Graphics::TriD::graph_object(ref(PDL::Graphics::TriD::LineStrip))
called from file
'/tools/lib/perl5/site_perl/5.15.9/x86_64-linux/PDL/Graphics/TriD.pm' line 832
. = PDL::line3d(ref(ARRAY)) called from file 'trid.pl' line 11
_______________________________________________
Perldl mailing list
[email protected]
http://mailman.jach.hawaii.edu/mailman/listinfo/perldl
