1 ##########################################################################
3 # Copyright 2011 VMware, Inc.
6 # Permission is hereby granted, free of charge, to any person obtaining a copy
7 # of this software and associated documentation files (the "Software"), to deal
8 # in the Software without restriction, including without limitation the rights
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10 # copies of the Software, and to permit persons to whom the Software is
11 # furnished to do so, subject to the following conditions:
13 # The above copyright notice and this permission notice shall be included in
14 # all copies or substantial portions of the Software.
16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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24 ##########################################################################/
27 """Cgl tracing generator."""
30 from specs.stdapi import API
31 from specs.glapi import glapi
32 from specs.cglapi import cglapi
33 from gltrace import GlTracer
36 class CglTracer(GlTracer):
38 def is_public_function(self, function):
39 # The symbols visible in libGL.dylib can vary, so expose them all
43 if __name__ == '__main__':
45 print '#include <stdlib.h>'
46 print '#include <string.h>'
47 print '#include <unistd.h>'
49 print '#ifndef _GNU_SOURCE'
50 print '#define _GNU_SOURCE // for dladdr'
52 print '#include <dlfcn.h>'
54 print '#include "trace_writer.hpp"'
56 print '// To validate our prototypes'
57 print '#define GL_GLEXT_PROTOTYPES'
59 print '#include "glproc.hpp"'
60 print '#include "glsize.hpp"'
73 * Path to the true OpenGL framework
75 static const char *libgl_filename = "/System/Library/Frameworks/OpenGL.framework/OpenGL";
79 * Handle to the true OpenGL framework.
81 static void *libgl_handle = NULL;
85 * Lookup a libGL symbol
87 void * __libgl_sym(const char *symbol)
93 * Unfortunately we can't just dlopen the true dynamic library because
94 * DYLD_LIBRARY_PATH/DYLD_FRAMEWORK_PATH take precedence, even for
95 * absolute paths. So we create a temporary symlink, and dlopen that
99 char temp_filename[] = "/tmp/tmp.XXXXXX";
101 if (mktemp(temp_filename) != NULL) {
102 if (symlink(libgl_filename, temp_filename) == 0) {
103 libgl_handle = dlopen(temp_filename, RTLD_LOCAL | RTLD_NOW | RTLD_FIRST);
104 remove(temp_filename);
109 OS::DebugMessage("apitrace: error: couldn't load %s\n", libgl_filename);
115 result = dlsym(libgl_handle, symbol);
117 if (result == dlsym(RTLD_SELF, symbol)) {
118 OS::DebugMessage("apitrace: error: symbol lookup recursion\n");