1 /* Copyright © 2013, Intel Corporation
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 #include "fips-dispatch.h"
33 /* Defer to the real 'function' (from libEGL.so.1) to do the real work.
34 * The symbol is looked up once and cached in a static variable for
37 #define EGLWRAP_DEFER(function,...) do { \
38 static typeof(&function) real_ ## function; \
39 if (! real_ ## function) \
40 real_ ## function = eglwrap_lookup (#function); \
41 real_ ## function(__VA_ARGS__); \
44 /* As EGLWRAP_DEFER, but also set 'ret' to the return value */
45 #define EGLWRAP_DEFER_WITH_RETURN(ret, function,...) do { \
46 static typeof(&function) real_ ## function; \
47 if (! real_ ## function) \
48 real_ ## function = eglwrap_lookup (#function); \
49 (ret) = real_ ## function(__VA_ARGS__); \
53 /* Note: We only need to perform a lookup in libEGL.so.1, (not
54 * libGLESv2.so.2). This is because the functions we wrap, (currently
55 * eglSwapBufers, eglGetProcAddress, and eglMakeCurrent), exist only
59 eglwrap_lookup (char *name)
61 const char *libegl_filename = "libEGL.so.1";
62 static void *libegl_handle = NULL;
64 if (! libegl_handle) {
65 libegl_handle = dlwrap_real_dlopen (libegl_filename, RTLD_NOW | RTLD_DEEPBIND);
66 if (! libegl_handle) {
67 fprintf (stderr, "Error: Failed to dlopen %s\n",
73 return dlwrap_real_dlsym (libegl_handle, name);
77 eglSwapBuffers (EGLDisplay dpy, EGLSurface surface)
81 context_end_frame_pre_swap ();
83 EGLWRAP_DEFER_WITH_RETURN (ret, eglSwapBuffers, dpy, surface);
85 context_end_frame_post_swap ();
90 void (*eglGetProcAddress (char const *func))(void)
94 /* If our library has this symbol, that's what we want to give. */
95 ret = dlwrap_real_dlsym (NULL, (const char *) func);
99 /* Otherwise, just defer to the real eglGetProcAddress */
100 EGLWRAP_DEFER_WITH_RETURN (ret, eglGetProcAddress, func);
106 eglMakeCurrent (EGLDisplay display, EGLSurface draw, EGLSurface read,
113 EGLWRAP_DEFER_WITH_RETURN (ret, eglMakeCurrent, display, draw, read, context);
115 context_enter (FIPS_API_EGL, context);