// 05/10/2010 Modified by BenXYZ from the GLEW project, see copyright: http://glew.sourceforge.net/credits.html

GLboolean glewGetExtension (const char* name)
{
  GLubyte* p;
  GLubyte* end;
  GLuint len = _glewStrLen((const GLubyte*)name);
  p = (GLubyte*)glGetString(GL_EXTENSIONS);

  //if glGetString() failed, attempt glGetStringi()
  if (0 == p)
  {
    GLint numextns; glGetIntegerv(GL_NUM_EXTENSIONS, &numextns);
    GLuint iii;
    for (iii = 0; iii < numextns; iii++)
    {
      p = glGetStringi(GL_EXTENSIONS, iii);
      if (_glewStrSame((const GLubyte*)name, p, _glewStrLen(p))) return GL_TRUE;
    }
    return GL_FALSE;
  }

  //...or if glGetString() worked, carry on as usual
  end = p + _glewStrLen(p);
  while (p < end)
  {
    GLuint n = _glewStrCLen(p, ' ');
    if (len == n && _glewStrSame((const GLubyte*)name, p, n)) return GL_TRUE;
    p += n+1;
  }
  return GL_FALSE;
}