From 398c6b7980ac52ba15af78f45e71f49f33ded1aa Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 4 Feb 2003 02:43:27 +0000 Subject: DOS updates (Daniel Borca) --- src/glut/dos/extens.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 src/glut/dos/extens.c (limited to 'src/glut/dos/extens.c') diff --git a/src/glut/dos/extens.c b/src/glut/dos/extens.c new file mode 100644 index 0000000000..ae8e44f408 --- /dev/null +++ b/src/glut/dos/extens.c @@ -0,0 +1,63 @@ +/* + * Mesa 3-D graphics library + * Version: 3.4 + * Copyright (C) 1995-1998 Brian Paul + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/* + * DOS/DJGPP glut driver v1.3 for Mesa 5.0 + * + * Copyright (C) 2002 - Borca Daniel + * Email : dborca@yahoo.com + * Web : http://www.geocities.com/dborca + */ + + +#include + +#include "GL/glut.h" + + + +int APIENTRY glutExtensionSupported (const char *extension) +{ + static const GLubyte *extensions = NULL; + const GLubyte *last, *where; + + /* Extension names should not have spaces. */ + if (strchr(extension, ' ') || *extension == '\0') { + return GL_FALSE; + } + + /* Not my problem if you don't have a valid OpenGL context */ + if (!extensions) { + extensions = glGetString(GL_EXTENSIONS); + } + + /* Take care of sub-strings etc. */ + for (last = extensions;;) { + if ((where = (GLubyte *)strstr((const char *)last, extension)) == NULL) { + return GL_FALSE; + } + last = where + strlen(extension); + if (where == extensions || *(where - 1) == ' ') { + if (*last == ' ' || *last == '\0') { + return GL_TRUE; + } + } + } +} -- cgit v1.2.3