On 02/12/14 08:34 PM, DRC wrote:
> Please check out the code in SVN trunk and see if it corrects this
> issue.
While that code looks like it will help the general problem (one faked
function calls another) it doesn't fix the particular SEGV[1] I see here
because at the point the XCB code that needs to go to 2D server is
called it is still under the first level (glXChooseVisual) function and
is not in a 2nd level (_glXChooseVisual).
I think the VGL_PROBGLX code needs to be manually wrapped in
vglfaker::alreadyInterposed=true;
vglfaker::alreadyInterposed=false;
but at this hour my brain is not certified for thinking about this any more.
-Nathan
[1]
Breakpoint 4, 0x00007ffff7afaf30 in xcb_get_extension_data () from
./librrfaker.so
(gdb) c
Continuing.
FAKED GLX IN XCB DATA
Breakpoint 4, xcb_get_extension_data (c=0x509370, ext=0x7ffff67c3050
<xcb_glx_id>) at xcb_ext.c:89
89 xcb_ext.c: No such file or directory.
(gdb) c
Continuing.
Program received signal SIGSEGV, Segmentation fault.
xcb_glx_query_server_string_string_length (R=R@entry=0x0) at glx.c:2448
2448 glx.c: No such file or directory.
(gdb) bt
#0 xcb_glx_query_server_string_string_length (R=R@entry=0x0) at glx.c:2448
#1 0x00007ffff7891595 in __glXQueryServerString
(dpy=dpy@entry=0x518b70, opcode=<optimized out>,
screen=screen@entry=0, name=name@entry=2) at glx_query.c:55
#2 0x00007ffff7873dd6 in AllocAndFetchScreenConfigs (priv=0x579550,
dpy=0x518b70) at glxext.c:764
#3 __glXInitialize (dpy=dpy@entry=0x518b70) at glxext.c:879
#4 0x00007ffff787071b in GetGLXPrivScreenConfig (dpy=0x518b70, scrn=0,
ppriv=ppriv@entry=0x7fffffffdc40,
ppsc=ppsc@entry=0x7fffffffdc48) at glxcmds.c:174
#5 0x00007ffff78707ab in GetGLXPrivScreenConfig (ppsc=0x7fffffffdc48,
ppriv=0x7fffffffdc40,
scrn=<optimized out>, dpy=<optimized out>) at glxcmds.c:170
#6 glXGetConfig (dpy=<optimized out>, vis=0x530dc0, attribute=5,
value_return=0x539948) at glxcmds.c:880
#7 0x00007ffff7aff4c1 in buildVisAttribTable(_XDisplay*, int) () from
./librrfaker.so
#8 0x00007ffff7b004d9 in glxvisual::matchVisual2D(_XDisplay*, int, int,
int, int, int, int) ()
from ./librrfaker.so
#9 0x00007ffff7adb5b0 in glXChooseVisual () from ./librrfaker.so
#10 0x000000000040556c in main ()
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