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glew-cmake
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Generate Sources of origin/master updated at Thu Jan 7 17:44:33 GMT 2016

This commit is contained in:
omniavinco 2016-01-08 02:44:33 +09:00
parent 573806ef49
commit 9b1e3b3dca
1 changed files with 52 additions and 41 deletions
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93
src/glew.c
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@ -42,7 +42,7 @@
#endif
#include <stddef.h> /* For size_t */
#include <stdlib.h> /* For malloc, free */
#include <stdlib.h> /* For bsearch */
#include <string.h> /* For memset */
#if defined(GLEW_REGAL)
@ -97,7 +97,7 @@ void* NSGLGetProcAddress (const GLubyte *name)
{
static void* image = NULL;
void* addr;
if (NULL == image)
if (NULL == image)
{
image = dlopen("/System/Library/Frameworks/OpenGL.framework/Versions/Current/OpenGL", RTLD_LAZY);
}
@ -198,25 +198,19 @@ static GLuint _glewStrCLen (const GLubyte* s, GLubyte c)
GLuint i=0;
if (s == NULL) return 0;
while (s[i] != '\0' && s[i] != c) i++;
return (s[i] == '\0' || s[i] == c) ? i : 0;
return i;
}
static GLubyte *_glewStrDup (const GLubyte *s)
static GLuint _glewStrCopy(char *d, const char *s, char c)
{
int n = _glewStrLen(s);
GLubyte *dup = malloc(n+1);
if (dup)
{
GLubyte *i = dup;
for (;;)
{
*i = *s;
if (*i) { ++i; ++s; } else break;
}
}
return dup;
GLuint i=0;
if (s == NULL) return 0;
while (s[i] != '\0' && s[i] != c) { d[i] = s[i]; i++; }
d[i] = '\0';
return i;
}
#if !defined(GLEW_OSMESA)
#if !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
static GLboolean _glewStrSame (const GLubyte* a, const GLubyte* b, GLuint n)
{
@ -227,6 +221,7 @@ static GLboolean _glewStrSame (const GLubyte* a, const GLubyte* b, GLuint n)
return i == n ? GL_TRUE : GL_FALSE;
}
#endif
#endif
static GLboolean _glewStrSame1 (const GLubyte** a, GLuint* na, const GLubyte* b, GLuint nb)
{
@ -287,6 +282,7 @@ static GLboolean _glewStrSame3 (const GLubyte** a, GLuint* na, const GLubyte* b,
* other extension names. Could use strtok() but the constant
* string returned by glGetString might be in read-only memory.
*/
#if !defined(GLEW_OSMESA)
#if !defined(__APPLE__) || defined(GLEW_APPLE_GLX)
static GLboolean _glewSearchExtension (const char* name, const GLubyte *start, const GLubyte *end)
{
@ -302,6 +298,7 @@ static GLboolean _glewSearchExtension (const char* name, const GLubyte *start, c
return GL_FALSE;
}
#endif
#endif
#if !defined(_WIN32) || !defined(GLEW_MX)
@ -16706,13 +16703,25 @@ static GLboolean _glewInit_GL_WIN_swap_hint ()
static int _glewExtensionCompare(const void *a, const void *b)
{
return strcmp((const char *) a, *(const char * const *) b);
/* http://www.chanduthedev.com/2012/07/strcmp-implementation-in-c.html */
const char *s1 = (const char *) a;
const char *s2 = *(const char * const *) b;
while (*s1 || *s2)
{
if (*s1 > *s2)
return 1;
if (*s1 < *s2)
return -1;
s1++;
s2++;
}
return 0;
}
static GLboolean *_glewGetExtensionString(const char *name)
{
const char **n = (const char **) bsearch(name, _glewExtensionLookup, sizeof(_glewExtensionLookup)/sizeof(char *)-1, sizeof(char *), _glewExtensionCompare);
int i;
ptrdiff_t i;
if (n)
{
@ -16726,7 +16735,7 @@ static GLboolean *_glewGetExtensionString(const char *name)
static GLboolean *_glewGetExtensionEnable(const char *name)
{
const char **n = (const char **) bsearch(name, _glewExtensionLookup, sizeof(_glewExtensionLookup)/sizeof(char *)-1, sizeof(char *), _glewExtensionCompare);
int i;
ptrdiff_t i;
if (n)
{
@ -16737,17 +16746,17 @@ static GLboolean *_glewGetExtensionEnable(const char *name)
return NULL;
}
static char *_glewNextSpace(char *i)
static const char *_glewNextSpace(const char *i)
{
char *j = i;
const char *j = i;
if (j)
while (*j!=' ' && *j) ++j;
return j;
}
static char *_glewNextNonSpace(char *i)
static const char *_glewNextNonSpace(const char *i)
{
char *j = i;
const char *j = i;
if (j)
while (*j==' ') ++j;
return j;
@ -16774,7 +16783,7 @@ static GLenum GLEWAPIENTRY glewContextInit ()
dot = _glewStrCLen(s, '.');
if (dot == 0)
return GLEW_ERROR_NO_GL_VERSION;
major = s[dot-1]-'0';
minor = s[dot+1]-'0';
@ -16782,7 +16791,7 @@ static GLenum GLEWAPIENTRY glewContextInit ()
minor = 0;
if (major<0 || major>9)
return GLEW_ERROR_NO_GL_VERSION;
if (major == 1 && minor == 0)
{
return GLEW_ERROR_GL_VERSION_10_ONLY;
@ -16799,12 +16808,12 @@ static GLenum GLEWAPIENTRY glewContextInit ()
GLEW_VERSION_3_2 = GLEW_VERSION_3_3 == GL_TRUE || ( major == 3 && minor >= 2 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_3_1 = GLEW_VERSION_3_2 == GL_TRUE || ( major == 3 && minor >= 1 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_3_0 = GLEW_VERSION_3_1 == GL_TRUE || ( major == 3 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_2_1 = GLEW_VERSION_3_0 == GL_TRUE || ( major == 2 && minor >= 1 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_2_1 = GLEW_VERSION_3_0 == GL_TRUE || ( major == 2 && minor >= 1 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_2_0 = GLEW_VERSION_2_1 == GL_TRUE || ( major == 2 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_1_5 = GLEW_VERSION_2_0 == GL_TRUE || ( major == 1 && minor >= 5 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_1_4 = GLEW_VERSION_1_5 == GL_TRUE || ( major == 1 && minor >= 4 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_1_3 = GLEW_VERSION_1_4 == GL_TRUE || ( major == 1 && minor >= 3 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_1_2_1 = GLEW_VERSION_1_3 == GL_TRUE ? GL_TRUE : GL_FALSE;
GLEW_VERSION_1_2_1 = GLEW_VERSION_1_3 == GL_TRUE ? GL_TRUE : GL_FALSE;
GLEW_VERSION_1_2 = GLEW_VERSION_1_2_1 == GL_TRUE || ( major == 1 && minor >= 2 ) ? GL_TRUE : GL_FALSE;
GLEW_VERSION_1_1 = GLEW_VERSION_1_2 == GL_TRUE || ( major == 1 && minor >= 1 ) ? GL_TRUE : GL_FALSE;
}
@ -16841,36 +16850,38 @@ static GLenum GLEWAPIENTRY glewContextInit ()
}
else
{
const GLubyte *ext;
char *begin;
char *end;
char *i;
char *j;
const char *extensions;
const char *end;
const char *i;
const char *j;
char ext[128];
GLboolean *enable;
ext = glGetString(GL_EXTENSIONS);
extensions = (const char *) glGetString(GL_EXTENSIONS);
if (ext)
if (extensions)
{
begin = (char *) _glewStrDup(ext);
end = begin + _glewStrLen((GLubyte *) begin);
for (i=begin; i<end; i = j + 1)
end = extensions + _glewStrLen((const GLubyte *) extensions);
for (i=extensions; i<end; i = j + 1)
{
i = _glewNextNonSpace(i);
j = _glewNextSpace(i);
*j = 0;
/* Copy extension into NUL terminated string */
if (j-i >= (ptrdiff_t) sizeof(ext))
continue;
_glewStrCopy(ext, i, ' ');
/* Based on extension string(s), glewGetExtension purposes */
enable = _glewGetExtensionString(i);
enable = _glewGetExtensionString(ext);
if (enable)
*enable = GL_TRUE;
/* Based on extension string(s), experimental mode, glewIsSupported purposes */
enable = _glewGetExtensionEnable(i);
enable = _glewGetExtensionEnable(ext);
if (enable)
*enable = GL_TRUE;
}
free(begin);
}
}
#ifdef GL_VERSION_1_2