1 files changed, 82 insertions, 0 deletions
diff --git a/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.cc b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.cc
new file mode 100644
index 00000000000..a288fb6ab92
--- /dev/null
+++ b/source/blender/depsgraph/intern/eval/deg_eval_runtime_backup_scene.cc
@@ -0,0 +1,82 @@
+/*
+ * 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_scene.h"
+
+#include "DNA_scene_types.h"
+#include "DNA_rigidbody_types.h"
+
+namespace DEG {
+
+SceneBackup::SceneBackup(const Depsgraph *depsgraph) : sequencer_backup(depsgraph)
+{
+  reset();
+}
+
+void SceneBackup::reset()
+{
+  sound_scene = NULL;
+  playback_handle = NULL;
+  sound_scrub_handle = NULL;
+  speaker_handles = NULL;
+  rigidbody_last_time = -1;
+}
+
+void SceneBackup::init_from_scene(Scene *scene)
+{
+  sound_scene = scene->sound_scene;
+  playback_handle = scene->playback_handle;
+  sound_scrub_handle = scene->sound_scrub_handle;
+  speaker_handles = scene->speaker_handles;
+
+  if (scene->rigidbody_world != NULL) {
+    rigidbody_last_time = scene->rigidbody_world->ltime;
+  }
+
+  /* Clear pointers stored in the scene, so they are not freed when copied-on-written datablock
+   * is freed for re-allocation. */
+  scene->sound_scene = NULL;
+  scene->playback_handle = NULL;
+  scene->sound_scrub_handle = NULL;
+  scene->speaker_handles = NULL;
+
+  sequencer_backup.init_from_scene(scene);
+}
+
+void SceneBackup::restore_to_scene(Scene *scene)
+{
+  scene->sound_scene = sound_scene;
+  scene->playback_handle = playback_handle;
+  scene->sound_scrub_handle = sound_scrub_handle;
+  scene->speaker_handles = speaker_handles;
+
+  if (scene->rigidbody_world != NULL) {
+    scene->rigidbody_world->ltime = rigidbody_last_time;
+  }
+
+  sequencer_backup.restore_to_scene(scene);
+
+  reset();
+}
+
+}  // namespace DEG