1 ##########################################################################
3 # Copyright 2011 Jose Fonseca
4 # Copyright 2008-2010 VMware, Inc.
7 # Permission is hereby granted, free of charge, to any person obtaining a copy
8 # of this software and associated documentation files (the "Software"), to deal
9 # in the Software without restriction, including without limitation the rights
10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 # copies of the Software, and to permit persons to whom the Software is
12 # furnished to do so, subject to the following conditions:
14 # The above copyright notice and this permission notice shall be included in
15 # all copies or substantial portions of the Software.
17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 ##########################################################################/
28 """GLX tracing generator."""
31 from gltrace import GlTracer
32 from specs.stdapi import API
33 from specs.glapi import glapi
34 from specs.glxapi import glxapi
37 class GlxTracer(GlTracer):
39 def isFunctionPublic(self, function):
40 # The symbols visible in libGL.so can vary, so expose them all
43 getProcAddressFunctionNames = [
45 "glXGetProcAddressARB",
49 if __name__ == '__main__':
51 print '#include <stdlib.h>'
52 print '#include <string.h>'
54 print '#ifndef _GNU_SOURCE'
55 print '#define _GNU_SOURCE // for dladdr'
57 print '#include <dlfcn.h>'
59 print '#include "trace_writer_local.hpp"'
61 print '// To validate our prototypes'
62 print '#define GL_GLEXT_PROTOTYPES'
63 print '#define GLX_GLXEXT_PROTOTYPES'
65 print '#include "glproc.hpp"'
66 print '#include "glsize.hpp"'
79 * Invoke the true dlopen() function.
81 static void *_dlopen(const char *filename, int flag)
83 typedef void * (*PFN_DLOPEN)(const char *, int);
84 static PFN_DLOPEN dlopen_ptr = NULL;
87 dlopen_ptr = (PFN_DLOPEN)dlsym(RTLD_NEXT, "dlopen");
89 os::log("apitrace: error: dlsym(RTLD_NEXT, \"dlopen\") failed\n");
94 return dlopen_ptr(filename, flag);
99 * Several applications, such as Quake3, use dlopen("libGL.so.1"), but
100 * LD_PRELOAD does not intercept symbols obtained via dlopen/dlsym, therefore
101 * we need to intercept the dlopen() call here, and redirect to our wrapper
105 void * dlopen(const char *filename, int flag)
109 handle = _dlopen(filename, flag);
111 const char * libgl_filename = getenv("TRACE_LIBGL");
113 if (filename && handle && !libgl_filename) {
115 os::log("apitrace: warning: dlopen(\"%s\", 0x%x)\n", filename, flag);
118 // FIXME: handle absolute paths and other versions
119 if (strcmp(filename, "libGL.so") == 0 ||
120 strcmp(filename, "libGL.so.1") == 0) {
122 // Use the true libGL.so handle instead of RTLD_NEXT from now on
123 _libGlHandle = handle;
125 // Get the file path for our shared object, and use it instead
126 static int dummy = 0xdeedbeef;
128 if (dladdr(&dummy, &info)) {
129 os::log("apitrace: redirecting dlopen(\"%s\", 0x%x)\n", filename, flag);
130 handle = _dlopen(info.dli_fname, flag);
132 os::log("apitrace: warning: dladdr() failed\n");