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diff --git a/source/mupen64plus-video-arachnoid/src/ExtensionChecker.cpp b/source/mupen64plus-video-arachnoid/src/ExtensionChecker.cpp
new file mode 100755
index 0000000..af1363e
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+++ b/source/mupen64plus-video-arachnoid/src/ExtensionChecker.cpp
@@ -0,0 +1,57 @@
+/******************************************************************************
+ * Arachnoid Graphics Plugin for Mupen64Plus
+ * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/
+ *
+ * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *****************************************************************************/
+
+#include "m64p.h"
+#include "OpenGL.h"
+#include "ExtensionChecker.h"
+
+//-----------------------------------------------------------------------------
+//! Is Extension Supported
+//-----------------------------------------------------------------------------
+bool isExtensionSupported( const char *extension )
+{
+    const GLubyte *extensions = NULL;
+    const GLubyte *start;
+    GLubyte *where, *terminator;
+
+    where = (GLubyte *) strchr(extension, ' ');
+    if (where || *extension == '\0')
+        return false;
+
+    extensions = glGetString(GL_EXTENSIONS);
+
+    start = extensions;
+    for (;;)
+    {
+        where = (GLubyte *) strstr((const char *) start, extension);
+        if (!where)
+            break;
+
+        terminator = where + strlen(extension);
+        if (where == start || *(where - 1) == ' ')
+            if (*terminator == ' ' || *terminator == '\0')
+                return true;
+
+        start = terminator;
+    }
+
+    return false;
+}