mirror of
https://github.com/Perlmint/glew-cmake.git
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ac74be6855
git-svn-id: https://glew.svn.sourceforge.net/svnroot/glew/trunk/glew@158 783a27ee-832a-0410-bc00-9f386506c6dd
105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
/*
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** The OpenGL Extension Wrangler Library
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** Copyright (C) 2003, 2002, Milan Ikits <milan.ikits@ieee.org>
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** Copyright (C) 2003, 2002, Marcelo E. Magallon <mmagallo@debian.org>
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** Copyright (C) 2002, Lev Povalahev <levp@gmx.net>
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are met:
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**
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** * Redistributions of source code must retain the above copyright notice,
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** this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright notice,
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** this list of conditions and the following disclaimer in the documentation
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** and/or other materials provided with the distribution.
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** * The name of the author may be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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** LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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** INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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** CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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** ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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** THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <GL/glew.h>
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#if defined(_WIN32)
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# include <GL/wglew.h>
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#elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
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# include <GL/glxew.h>
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#endif
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#if defined(_WIN32)
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# define glewGetProcAddress(name) wglGetProcAddress((LPCSTR)name)
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#else
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# if defined(__APPLE__)
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# define glewGetProcAddress(name) NSGLGetProcAddress(name)
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# else
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# if defined(__sgi) || defined(__sun)
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# define glewGetProcAddress(name) dlGetProcAddress(name)
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# else /* __linux */
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# define glewGetProcAddress(name) (*glXGetProcAddressARB)(name)
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# endif
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# endif
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#endif
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#if defined(__APPLE__)
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#include <mach-o/dyld.h>
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#include <stdlib.h>
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#include <string.h>
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static void *NSGLGetProcAddress (const GLubyte *name)
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{
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NSSymbol symbol;
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char *symbolName;
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/* prepend a '_' for the Unix C symbol mangling convention */
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symbolName = malloc(strlen((const char *)name) + 2);
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strcpy(symbolName+1, (const char *)name);
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symbolName[0] = '_';
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symbol = NULL;
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if (NSIsSymbolNameDefined(symbolName))
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symbol = NSLookupAndBindSymbol(symbolName);
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free(symbolName);
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return symbol ? NSAddressOfSymbol(symbol) : NULL;
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}
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#endif /* __APPLE__ */
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#if defined(__sgi) || defined (__sun)
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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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static void *dlGetProcAddress (const GLubyte* name)
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{
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static void *h = NULL;
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static void *gpa;
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if (h == NULL)
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{
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if ((h = dlopen(NULL, RTLD_LAZY | RTLD_LOCAL)) == NULL) return NULL;
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gpa = dlsym(h, "glXGetProcAddress");
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}
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if (gpa != NULL)
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return ((void *(*)(const GLubyte *))gpa)(name);
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else
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return dlsym(h, (const char *)name);
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}
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#endif /* __sgi || __sun */
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/* ----------------------------- GL_VERSION_1_1 ---------------------------- */
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#ifdef GL_VERSION_1_1
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GLboolean GLEW_VERSION_1_1 = GL_FALSE;
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#endif /* GL_VERSION_1_1 */
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