1 files changed, 60 insertions, 0 deletions
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.cc
new file mode 100644
index 00000000000..09e13ec131d
--- /dev/null
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_volume.cc
@@ -0,0 +1,60 @@
+/*
+ * 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) 2019 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup depsgraph
+ */
+
+#include "intern/eval/deg_eval_runtime_backup_volume.h"
+
+#include "BLI_assert.h"
+#include "BLI_string.h"
+#include "BLI_utildefines.h"
+
+#include "DNA_volume_types.h"
+
+#include "BKE_volume.h"
+
+#include <stdio.h>
+
+namespace DEG {
+
+VolumeBackup::VolumeBackup(const Depsgraph * /*depsgraph*/) : grids(nullptr)
+{
+}
+
+void VolumeBackup::init_from_volume(Volume *volume)
+{
+  STRNCPY(filepath, volume->filepath);
+  BLI_STATIC_ASSERT(sizeof(filepath) == sizeof(volume->filepath),
+                    "VolumeBackup filepath length wrong");
+
+  grids = volume->runtime.grids;
+  volume->runtime.grids = nullptr;
+}
+
+void VolumeBackup::restore_to_volume(Volume *volume)
+{
+  if (grids) {
+    BKE_volume_grids_backup_restore(volume, grids, filepath);
+    grids = nullptr;
+  }
+}
+
+}  // namespace DEG