/* | |
** The OpenGL Extension Wrangler Library | |
** Copyright (C) 2002-2007, Milan Ikits <milan ikits[]ieee org> | |
** Copyright (C) 2002-2007, Marcelo E. Magallon <mmagallo[]debian org> | |
** Copyright (C) 2002, Lev Povalahev | |
** All rights reserved. | |
** | |
** Redistribution and use in source and binary forms, with or without | |
** modification, are permitted provided that the following conditions are met: | |
** | |
** * Redistributions of source code must retain the above copyright notice, | |
** this list of conditions and the following disclaimer. | |
** * Redistributions in binary form must reproduce the above copyright notice, | |
** this list of conditions and the following disclaimer in the documentation | |
** and/or other materials provided with the distribution. | |
** * The name of the author may be used to endorse or promote products | |
** derived from this software without specific prior written permission. | |
** | |
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
** AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
** LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
** INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
** CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
** ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
** THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#include <GL/glew.h> | |
#if defined(_WIN32) | |
# include <GL/wglew.h> | |
#elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX) | |
# include <GL/glxew.h> | |
#endif | |
#include "glew_utils.h" | |
#if defined(__APPLE__) | |
#include <mach-o/dyld.h> | |
#include <stdlib.h> | |
#include <string.h> | |
void* NSGLGetProcAddress (const GLubyte *name) | |
{ | |
NSSymbol symbol; | |
char* symbolName; | |
/* prepend a '_' for the Unix C symbol mangling convention */ | |
symbolName = malloc(strlen((const char*)name) + 2); | |
strcpy(symbolName+1, (const char*)name); | |
symbolName[0] = '_'; | |
symbol = NULL; | |
if (NSIsSymbolNameDefined(symbolName)) | |
symbol = NSLookupAndBindSymbol(symbolName); | |
free(symbolName); | |
return symbol ? NSAddressOfSymbol(symbol) : NULL; | |
} | |
#endif /* __APPLE__ */ | |
#if defined(__sgi) || defined (__sun) | |
#include <dlfcn.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
void* dlGetProcAddress (const GLubyte* name) | |
{ | |
static void* h = NULL; | |
static void* gpa; | |
if (h == NULL) | |
{ | |
if ((h = dlopen(NULL, RTLD_LAZY | RTLD_LOCAL)) == NULL) return NULL; | |
gpa = dlsym(h, "glXGetProcAddress"); | |
} | |
if (gpa != NULL) | |
return ((void*(*)(const GLubyte*))gpa)(name); | |
else | |
return dlsym(h, (const char*)name); | |
} | |
#endif /* __sgi || __sun */ | |
/* | |
* GLEW, just like OpenGL or GLU, does not rely on the standard C library. | |
* These functions implement the functionality required in this file. | |
*/ | |
GLuint _glewStrLen (const GLubyte* s) | |
{ | |
GLuint i=0; | |
while (s+i != NULL && s[i] != '\0') i++; | |
return i; | |
} | |
GLuint _glewStrCLen (const GLubyte* s, GLubyte c) | |
{ | |
GLuint i=0; | |
while (s+i != NULL && s[i] != '\0' && s[i] != c) i++; | |
return i; | |
} | |
GLboolean _glewStrSame (const GLubyte* a, const GLubyte* b, GLuint n) | |
{ | |
GLuint i=0; | |
while (i < n && a+i != NULL && b+i != NULL && a[i] == b[i]) i++; | |
return i == n ? GL_TRUE : GL_FALSE; | |
} | |
GLboolean _glewStrSame1 (GLubyte** a, GLuint* na, const GLubyte* b, GLuint nb) | |
{ | |
while (*na > 0 && (**a == ' ' || **a == '\n' || **a == '\r' || **a == '\t')) | |
{ | |
*a++; | |
*na--; | |
} | |
if(*na >= nb) | |
{ | |
GLuint i=0; | |
while (i < nb && *a+i != NULL && b+i != NULL && *a[i] == b[i]) i++; | |
if(i == nb) | |
{ | |
*a = *a + nb; | |
*na = *na - nb; | |
return GL_TRUE; | |
} | |
} | |
return GL_FALSE; | |
} | |
GLboolean _glewStrSame2 (GLubyte** a, GLuint* na, const GLubyte* b, GLuint nb) | |
{ | |
if(*na >= nb) | |
{ | |
GLuint i=0; | |
while (i < nb && *a+i != NULL && b+i != NULL && *a[i] == b[i]) i++; | |
if(i == nb) | |
{ | |
*a = *a + nb; | |
*na = *na - nb; | |
return GL_TRUE; | |
} | |
} | |
return GL_FALSE; | |
} | |
GLboolean _glewStrSame3 (GLubyte** a, GLuint* na, const GLubyte* b, GLuint nb) | |
{ | |
if(*na >= nb) | |
{ | |
GLuint i=0; | |
while (i < nb && *a+i != NULL && b+i != NULL && *a[i] == b[i]) i++; | |
if (i == nb && (*na == nb || *a[i] == ' ' || *a[i] == '\n' || *a[i] == '\r' || *a[i] == '\t')) | |
{ | |
*a = *a + nb; | |
*na = *na - nb; | |
return GL_TRUE; | |
} | |
} | |
return GL_FALSE; | |
} |