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/**************************************************************************
*
* Copyright 2011 Jose Fonseca
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**************************************************************************/
#include "glproc.hpp"
#if !defined(_WIN32)
#ifndef _GNU_SOURCE
#define _GNU_SOURCE // for dladdr
#endif
#include <dlfcn.h>
#endif
/*
* Handle to the true OpenGL library.
*/
#if defined(_WIN32)
HINSTANCE __libGlHandle = NULL;
#else
void *__libGlHandle = RTLD_NEXT;
#endif
#if defined(_WIN32)
#error Unsupported
#elif defined(__APPLE__)
#error Unsupported
#else
/*
* Lookup a EGL or GLES symbol
*/
static inline void *
__libegl_sym(const char *symbol)
{
void *proc;
/* Always try dlsym before eglGetProcAddress as spec 3.10 says
* implementation may choose to also export extension functions
* publicly.
*/
proc = dlsym(__libGlHandle, symbol);
if (!proc && symbol[0] == 'g' && symbol[1] == 'l')
proc = (void *) __eglGetProcAddress(symbol);
return proc;
}
void *
__getPublicProcAddress(const char *procName)
{
return __libegl_sym(procName);
}
void *
__getPrivateProcAddress(const char *procName)
{
return __libegl_sym(procName);
}
#endif
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