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1 | /****************************************************************************** |
2 | * Arachnoid Graphics Plugin for Mupen64Plus |
3 | * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/ |
4 | * |
5 | * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson |
6 | * |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License |
9 | * as published by the Free Software Foundation; either version 2 |
10 | * of the License, or (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program; if not, write to the Free Software |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
20 | *****************************************************************************/ |
21 | |
22 | #include "m64p.h" |
23 | #include "OpenGL.h" |
24 | #include "ExtensionChecker.h" |
25 | |
26 | //----------------------------------------------------------------------------- |
27 | //! Is Extension Supported |
28 | //----------------------------------------------------------------------------- |
29 | bool isExtensionSupported( const char *extension ) |
30 | { |
31 | const GLubyte *extensions = NULL; |
32 | const GLubyte *start; |
33 | GLubyte *where, *terminator; |
34 | |
35 | where = (GLubyte *) strchr(extension, ' '); |
36 | if (where || *extension == '\0') |
37 | return false; |
38 | |
39 | extensions = glGetString(GL_EXTENSIONS); |
40 | |
41 | start = extensions; |
42 | for (;;) |
43 | { |
44 | where = (GLubyte *) strstr((const char *) start, extension); |
45 | if (!where) |
46 | break; |
47 | |
48 | terminator = where + strlen(extension); |
49 | if (where == start || *(where - 1) == ' ') |
50 | if (*terminator == ' ' || *terminator == '\0') |
51 | return true; |
52 | |
53 | start = terminator; |
54 | } |
55 | |
56 | return false; |
57 | } |