1 ##########################################################################
3 # Copyright 2011 LunarG, Inc.
6 # Based on glxtrace.py, which has
8 # Copyright 2011 Jose Fonseca
9 # Copyright 2008-2010 VMware, Inc.
11 # Permission is hereby granted, free of charge, to any person obtaining a copy
12 # of this software and associated documentation files (the "Software"), to deal
13 # in the Software without restriction, including without limitation the rights
14 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 # copies of the Software, and to permit persons to whom the Software is
16 # furnished to do so, subject to the following conditions:
18 # The above copyright notice and this permission notice shall be included in
19 # all copies or substantial portions of the Software.
21 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 ##########################################################################/
32 """EGL tracing generator."""
35 from gltrace import GlTracer
36 from specs.stdapi import API
37 from specs.glapi import glapi
38 from specs.eglapi import eglapi
39 from specs.glesapi import glesapi
42 class EglTracer(GlTracer):
44 def isFunctionPublic(self, function):
45 # The symbols visible in libEGL.so can vary, so expose them all
48 getProcAddressFunctionNames = [
52 def traceFunctionImplBody(self, function):
53 GlTracer.traceFunctionImplBody(self, function)
55 if function.name == 'eglMakeCurrent':
56 print ' // update the profile'
57 print ' if (ctx != EGL_NO_CONTEXT) {'
58 print ' EGLint api = EGL_OPENGL_ES_API, version = 1;'
59 print ' gltrace::Context *tr = gltrace::getContext();'
60 print ' _eglQueryContext(dpy, ctx, EGL_CONTEXT_CLIENT_TYPE, &api);'
61 print ' _eglQueryContext(dpy, ctx, EGL_CONTEXT_CLIENT_VERSION, &version);'
62 print ' if (api == EGL_OPENGL_API)'
63 print ' tr->profile = gltrace::PROFILE_COMPAT;'
64 print ' else if (version == 1)'
65 print ' tr->profile = gltrace::PROFILE_ES1;'
67 print ' tr->profile = gltrace::PROFILE_ES2;'
71 if __name__ == '__main__':
72 print '#include <stdlib.h>'
73 print '#include <string.h>'
74 print '#include <dlfcn.h>'
76 print '#include "trace_writer_local.hpp"'
78 print '// To validate our prototypes'
79 print '#define GL_GLEXT_PROTOTYPES'
80 print '#define EGL_EGLEXT_PROTOTYPES'
82 print '#include "glproc.hpp"'
83 print '#include "glsize.hpp"'
97 * Android does not support LD_PRELOAD.
103 * Invoke the true dlopen() function.
105 static void *_dlopen(const char *filename, int flag)
107 typedef void * (*PFN_DLOPEN)(const char *, int);
108 static PFN_DLOPEN dlopen_ptr = NULL;
111 dlopen_ptr = (PFN_DLOPEN)dlsym(RTLD_NEXT, "dlopen");
113 os::log("apitrace: error: dlsym(RTLD_NEXT, \"dlopen\") failed\n");
118 return dlopen_ptr(filename, flag);
123 * Several applications, such as Quake3, use dlopen("libGL.so.1"), but
124 * LD_PRELOAD does not intercept symbols obtained via dlopen/dlsym, therefore
125 * we need to intercept the dlopen() call here, and redirect to our wrapper
129 void * dlopen(const char *filename, int flag)
131 bool intercept = false;
135 strcmp(filename, "libEGL.so") == 0 ||
136 strcmp(filename, "libEGL.so.1") == 0 ||
137 strcmp(filename, "libGLESv1_CM.so") == 0 ||
138 strcmp(filename, "libGLESv1_CM.so.1") == 0 ||
139 strcmp(filename, "libGLESv2.so") == 0 ||
140 strcmp(filename, "libGLESv2.so.2") == 0 ||
141 strcmp(filename, "libGL.so") == 0 ||
142 strcmp(filename, "libGL.so.1") == 0;
145 os::log("apitrace: redirecting dlopen(\"%s\", 0x%x)\n", filename, flag);
147 /* The current dispatch implementation relies on core entry-points to be globally available, so force this.
149 * TODO: A better approach would be note down the entry points here and
150 * use them latter. Another alternative would be to reopen the library
151 * with RTLD_NOLOAD | RTLD_GLOBAL.
158 void *handle = _dlopen(filename, flag);
161 // Get the file path for our shared object, and use it instead
162 static int dummy = 0xdeedbeef;
164 if (dladdr(&dummy, &info)) {
165 handle = _dlopen(info.dli_fname, flag);
167 os::log("apitrace: warning: dladdr() failed\n");
175 #endif /* !ANDROID */