OpenSubdiv: Add new OpenSubdiv related files

This includes C-API bindings in intern/opensubdiv and CMAke module
which finds the OpenSubdiv library. This filea are not in use so
far, making it a separate commit to make actual integration commit
more clear.

1 files changed, 36 insertions, 0 deletions

diff --git a/intern/opensubdiv/opensubdiv_intern.h b/intern/opensubdiv/opensubdiv_intern.h
new file mode 100644
index 00000000000..034677f76fd
--- /dev/null
+++ b/intern/opensubdiv/opensubdiv_intern.h
@@ -0,0 +1,36 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * The Original Code is Copyright (C) 2015 Blender Foundation.
+ * All rights reserved.
+ *
+ * Contributor(s): Sergey Sharybin.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __OPENSUBDIV_INTERN_H__
+#define __OPENSUBDIV_INTERN_H__
+
+/* Perform full topology validation when exporting it to OpenSubdiv. */
+#ifdef NDEBUG
+#  undef OPENSUBDIV_VALIDATE_TOPOLOGY
+#else
+#  define OPENSUBDIV_VALIDATE_TOPOLOGY
+#endif
+
+#endif  /* __OPENSUBDIV_INTERN_H__ */