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79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
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/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2007,2008,2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl.h"
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#ifdef HAVE_CLUTTER_GLX
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#include <dlfcn.h>
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#include <GL/glx.h>
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typedef CoglFuncPtr (*GLXGetProcAddressProc) (const GLubyte *procName);
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#endif
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CoglFuncPtr
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_cogl_winsys_get_proc_address (const char *name)
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{
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static GLXGetProcAddressProc get_proc_func = NULL;
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static void *dlhand = NULL;
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if (get_proc_func == NULL && dlhand == NULL)
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{
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dlhand = dlopen (NULL, RTLD_LAZY);
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if (!dlhand)
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{
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g_warning ("Failed to dlopen (NULL, RTDL_LAZY): %s", dlerror ());
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return NULL;
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}
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dlerror ();
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get_proc_func =
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(GLXGetProcAddressProc) dlsym (dlhand, "glXGetProcAddress");
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if (dlerror () != NULL)
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{
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get_proc_func =
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(GLXGetProcAddressProc) dlsym (dlhand, "glXGetProcAddressARB");
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}
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if (dlerror () != NULL)
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{
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get_proc_func = NULL;
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g_warning ("failed to bind GLXGetProcAddress "
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"or GLXGetProcAddressARB");
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}
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}
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if (get_proc_func)
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return get_proc_func ((GLubyte *) name);
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return NULL;
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}
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