Hello all -
I'm creating/applying a texture under the HUD in order to
project the HUD onto live video. Works fine until I get
smacked with a Segmentation fault (trace attached) that seems
to be appearing over in plib. ???
I can faithfully recreate the seg fault with the following steps:
1. fgfs --fov=70 --timeofday=noon --enable-fullscreen
--enable-textures --airport=KVPS --aircraft=c172p-2dpanel
2. Enable the HUD ("h"). Video comes up behind the HUD happily.
3. Switch the minipanel mode ("s").
4. BOOM (@#$%!!!)
If I swap 2 and 3, I can fly around in the immediate area with
the video active... but 4 will follow when I fly for a while.
Is there something that forbids creation/use of textures
outside of the plib domain?
Is plib sloppy with the way it allocates/destroys textures?
Does plib allocate its memory up front?
Thanks for any insight you folks can provide.
D Wysong
--------------- DDD TRACE ----------------
(gdb) frame 21
#21 0x08051890 in main (argc=5, argv=0xfefdb624) at
bootstrap.cxx:192
/root/aerocross/fgfs/FlightGear-0.9.8/src/Main/bootstrap.cxx:192:4788:beg:0x8051890
(gdb) frame 20
#20 0x08054ca8 in fgMainInit (argc=5, argv=0xfefdb624) at
main.cxx:958
/root/aerocross/fgfs/FlightGear-0.9.8/src/Main/main.cxx:958:33765:beg:0x8054ca8
(gdb) frame 19
#19 0x004f5455 in glutMainLoop () from /usr/lib/libglut.so.3
(gdb) frame 18
#18 0x004f4d65 in glutMainLoopEvent () from /usr/lib/libglut.so.3
(gdb) frame 17
#17 0x08080c74 in GLUTkey (k=115 's', x=507, y=327) at
fg_os.cxx:108
/root/aerocross/fgfs/FlightGear-0.9.8/src/Main/fg_os.cxx:108:2408:beg:0x8080c74
(gdb) frame 16
#16 0x08080b4a in callKeyHandler (k=115, mods=0, x=507, y=327)
at fg_os.cxx:74
/root/aerocross/fgfs/FlightGear-0.9.8/src/Main/fg_os.cxx:74:1553:beg:0x8080b4a
(gdb) frame 15
#15 0x082c8895 in keyHandler (key=115, keymod=0, mousex=507,
mousey=327) at input.cxx:983
/root/aerocross/fgfs/FlightGear-0.9.8/src/Input/input.cxx:983:28731:beg:0x82c8895
(gdb) frame 14
#14 0x082c3f51 in FGInput::doKey (this=0x99157b0, k=2,
modifiers=0, x=507, y=327) at stl_vector.h:515
/usr/include/c++/3.3.3/bits/stl_vector.h:515:19040:beg:0x82c3f51
(gdb) frame 13
#13 0x082c32e2 in FGBinding::fire (this=0x9fd33d0) at
input.cxx:122
/root/aerocross/fgfs/FlightGear-0.9.8/src/Input/input.cxx:122:3195:beg:0x82c32e2
(gdb) frame 12
#12 0x08059059 in do_panel_load (arg=0xa407580) at
fg_commands.cxx:347
/root/aerocross/fgfs/FlightGear-0.9.8/src/Main/fg_commands.cxx:347:9576:beg:0x8059059
(gdb) frame 11
#11 0x080f2498 in fgReadPanel ([EMAIL PROTECTED]) at
panel_io.cxx:800
/root/aerocross/fgfs/FlightGear-0.9.8/src/Cockpit/panel_io.cxx:800:24942:beg:0x80f2498
(gdb) frame 10
#10 0x080f09fd in readPanel (root=0xfefdacf0) at
basic_string.h:717
/usr/include/c++/3.3.3/bits/basic_string.h:717:22443:beg:0x80f09fd
(gdb) frame 9
#9 0x080e762e in FGTextureManager::createTexture
([EMAIL PROTECTED]) at sg_path.hxx:127
/usr/local/include/simgear/misc/sg_path.hxx:127:3303:beg:0x80e762e
(gdb) frame 8
#8 0x0846fc71 in ssgTexture (this=0xbf5ccb0, fname=0xbf5ccb0
"HN\b", _wrapu=1, _wrapv=1, _mipmap=1) at ssgTexture.cxx:139
in ssgTexture.cxx
(gdb) frame 7
#7 0x08472b18 in ssgLoadTexture (filename=0xbe32cb8
"/usr/local/share/FlightGear/Aircraft/c172/Panels/Textures/panel-trans-mini-bg.rgb",
info=0xfefda9b0) at ssgLoadTexture.cxx:310
in ssgLoadTexture.cxx
(gdb) frame 6
#6 0x08474173 in ssgLoadSGI (fname=0xbe32cb8
"/usr/local/share/FlightGear/Aircraft/c172/Panels/Textures/panel-trans-mini-bg.rgb",
info=0xfefda9b0) at ssgLoadSGI.cxx:497
in ssgLoadSGI.cxx
(gdb) frame 5
#5 0x08473b88 in ssgSGIHeader (this=0xbf22058,
fname=0xbe32cb8
"/usr/local/share/FlightGear/Aircraft/c172/Panels/Textures/panel-trans-mini-bg.rgb",
info=0xfefda9b0) at ssgLoadSGI.cxx:358
(gdb) frame 4
#4 0x08472726 in ssgMakeMipMaps (image=0x1 <Address 0x1 out
of bounds>, xsize=256, ysize=256, zsize=4) at
ssgLoadTexture.cxx:163
in ssgLoadTexture.cxx
(gdb) frame 3
#3 0x001700b7 in __indirect_glTexImage2D () from
/usr/X11R6/lib/libGL.so.1
(gdb) frame 2
#2 0x0016f71c in __indirect_glSamplePatternSGIS () from
/usr/X11R6/lib/libGL.so.1
(gdb) frame 1
#1 0x0016d91c in __glFillImage () from /usr/X11R6/lib/libGL.so.1
(gdb) frame 0
#0 0x00819ffc in memcpy () from /lib/tls/libc.so.6
(gdb)
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