Cyril Brulebois wrote:
Hi,
we received in the Debian BTS a bugreport about Blender making Xorg
SIGSEGV, and by having a closer look at xorg-server (1.1.1), it looks
like there's something wrong with the initialization of a span
structure. Following Michel Dänzer's suggestion, I'm forwarding this
report to you.
By checking the headers, we've got:
GLuint z[MAX_WIDTH]; // s_context.h
And:
#define MAX_WIDTH 4096 // config.h
There are also some asserts:
ASSERT(span->end <= MAX_WIDTH); // s_span.c
But during the initialization (s_linetemp.h and s_context.h), end is set
to numPixels, which is MAX2(dx, dy), with dx=1 and dy=10398.
Something's fishy there. The line should have been clipped to the
window and I doubt the window is 10398 pixels tall.
Then, in the direct_depth_test_pixels16 function (s_depth.c), the SEGV
occurs when z[i] is read, with i=4096.
This happens on Linux as well as on GNU/kFreeBSD, with the nv driver
(and no DRI).
You might want to refer to the original bugreport in the Debian BTS[1],
to the last message I wrote there[2], and to a backtrace[3].
1. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=405803
2. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=405803;msg=33
3. http://kibi.sysif.net/pub/bugreports/blender-sid-kfreebsd.trace
I'm also willing to test patches if you want me to.
I'm trying to reproduce this here, but I can't follow the steps to
reproduce the bug:
With a new blender file:
- NUM1>>Add>>Cube
- AKEY (unselect all elements)
- BKEY (block selection)
- select the bottom (or top) vertices with the mouse LMB
- EKEY>>Region (extrude region)
How do you "select the bottom (or top) vertices"? I'd expect that I
should shift-click on the two verts or use a selection box, but that
doesn't work. I also don't see how to do an extrusion.
I'm not a blender user so I need everything spelled out in detail.
Also, how do I run blender in a normal window so I can work in a
shell/gdb at the same time?
-Brian
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
