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Get GL extension strings via glGetStringi() if GL version is >= 3.0.

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This commit is contained in:
Matthias Bentrup 2015-02-04 15:44:01 +01:00 committed by Nigel Stewart
parent e935fcad83
commit bac20de049
1 changed files with 38 additions and 13 deletions
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51
auto/src/glew_init_glext.c
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@ -1,23 +1,48 @@
/* query opengl extensions string */
extStart = glGetString(GL_EXTENSIONS);
if (extStart == 0)
extStart = (const GLubyte*)"";
extEnd = extStart + _glewStrLen(extStart);
while (extStart < extEnd)
/* query opengl extensions string(s) */
if(GLEW_VERSION_3_0)
{
GLuint len = _glewStrCLen(extStart, ' ');
struct initflag *ptr = in_word_set(extStart, len);
GLuint len;
struct initflag *ptr;
if (ptr != NULL && ptr->flag != NULL) {
glGetIntegerv(GL_NUM_EXTENSIONS, &numExts);
for (ext = 0; ext < numExts; ext++)
{
extStart = glGetStringi(GL_EXTENSIONS, ext);
len = _glewStrLen(extStart);
ptr = in_word_set(extStart, len);
if (ptr != NULL && ptr->flag != NULL) {
#ifdef GLEW_MX
*(GLboolean *)((char *)ctx + (size_t)(ptr->flag)) = GL_TRUE;
*(GLboolean *)((char *)ctx + (size_t)(ptr->flag)) = GL_TRUE;
#else
*ptr->flag = GL_TRUE;
*ptr->flag = GL_TRUE;
#endif
}
extStart += len + 1;
}
}
else
{
extStart = glGetString(GL_EXTENSIONS);
if (extStart == 0)
extStart = (const GLubyte*)"";
extEnd = extStart + _glewStrLen(extStart);
while (extStart < extEnd)
{
GLuint len = _glewStrCLen(extStart, ' ');
struct initflag *ptr = in_word_set(extStart, len);
if (ptr != NULL && ptr->flag != NULL) {
#ifdef GLEW_MX
*(GLboolean *)((char *)ctx + (size_t)(ptr->flag)) = GL_TRUE;
#else
*ptr->flag = GL_TRUE;
#endif
}
extStart += len + 1;
}
extStart += len + 1;
}
/* initialize extensions */