Hello group,
Here is my first problem, as explained in PR
http://www.freebsd.org/cgi/query-pr.cgi?pr=59298:
When trying to render any scene with blender, and pushing the "render"
button, blender core dumps with this
error message:
-------------------------
assertion "vb.context == ctx" failed: file
"radeon_vtxfmt.c", line 1061
Abort trap (core dumped)
-------------------------
I tried to set RADEON_NO_VTXFMT to 1 but the problem go somewhere else, blender
becomes very unstable and crash too frequently.
My other problem is about a strange warning message i got in Xfree86 logs as
explained in http://www.freebsd.org/cgi/query-pr.cgi?pr=59297 :
when closing any opengl window application with the escape key, described in
this sample code:
----------------------
if(key == ESCAPE)
{
glutDestroyWindow(window);
exit(0);
}
----------------------
i got this warning in /var/log/XFree86.0.log:
----------------------
(WW) RADEON(0): [dri] RADEONDRITransitionTo2d: kernel failed to unflip buffers.
----------------------
But if i use the system close button, everything is going fine, but is this
error is harmless or not ?
Thanks for any help.
Sam._
Hello, Sam.
I'm a bit confused by the two pr's you listed in your message (both are
for
version 2.0 of FreeBSD and were resolved way back in 1994).
I've run into the issue you detail in experience with blender and a radeon
7500 card with DRI enabled. I assume you've already made the following
links under /usr/X11R6/lib/
libGL.so.14 -> libGL.so.1
libGLU.so.14 -> libGLU.so.1
Without those links blender won't run at all.
Setting the variable RADEON_NO_VTXFMT does fix the crashing on
render for version blender-2.25 (I've not tried the development version)
but it is still possible to crash blender by switching focus back and forth
between the main window and the render window by using F11 and F12.
The solution is to never use F11 at all -- just close the render window
when not needed and let F12 recreate it when you do another render.
The vtxfmt error goes away if you use the newest DRI code. I've been
overlaying a standard X install from ports with CVS code. If you use the
new port XFree86-4-Server-snap and the dri-devel port you should have
pretty much what I've been building from CVS.
I hope this helps to resolve your issues with erratic crashes when using
blender.
I can't reproduce the problem with using ESC to quit an application --
perhaps updating your X servers and DRI code will resolve this for you.
Sean