1 files changed, 68 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/rendering/GLUtils.cpp b/source/blender/freestyle/intern/rendering/GLUtils.cpp
new file mode 100755
index 00000000000..5e9ba2a5bf4
--- /dev/null
+++ b/source/blender/freestyle/intern/rendering/GLUtils.cpp
@@ -0,0 +1,68 @@
+
+//
+//  Copyright (C) : Please refer to the COPYRIGHT file distributed 
+//   with this source distribution. 
+//
+//  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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+//
+///////////////////////////////////////////////////////////////////////////////
+#include "GLUtils.h"
+
+# ifdef WIN32
+#  include <windows.h>
+# endif
+# ifdef __MACH__
+#  include <OpenGL/gl.h>
+# else
+#  include <GL/gl.h>
+# endif
+#include <string.h>
+
+int isExtensionSupported(const char *extension)
+{
+  const GLubyte *extensions = NULL;
+  const GLubyte *start;
+  GLubyte *where, *terminator;
+
+  /* Extension names should not have spaces. */
+  where = (GLubyte *) strchr(extension, ' ');
+  if (where || *extension == '\0')
+    return 0;
+  extensions = glGetString(GL_EXTENSIONS);
+  /* It takes a bit of care to be fool-proof about parsing the
+     OpenGL extensions string. Don't be fooled by sub-strings,
+     etc. */
+  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 1;
+    start = terminator;
+  }
+  return 0;
+}
+
+void *glutils_extgl_GetProcAddress(const char *name)
+{
+#ifdef _WIN32
+    void *t = wglGetProcAddress(name);
+    return t;
+#endif
+}
+