| 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 | } |