Merge branch 'blender-v2.91-release'

source/blender/depsgraph/intern/builder/deg_builder_relations.cc

@@ -2667,6 +2667,9 @@ void DepsgraphRelationBuilder::build_scene_sequencer(Scene *scene)
   if (scene->ed == nullptr) {
     return;
   }
+  if (built_map_.checkIsBuiltAndTag(scene, BuilderMap::TAG_SCENE_SEQUENCER)) {
+    return;
+  }
   build_scene_audio(scene);
   ComponentKey scene_audio_key(&scene->id, NodeType::AUDIO);
   /* Make sure dependencies from sequences data goes to the sequencer evaluation. */

source/blender/sequencer/intern/prefetch.c

@@ -319,6 +319,7 @@ static void seq_prefetch_update_scene(Scene *scene)
     return;
   }
 
+  pfjob->scene = scene;
   seq_prefetch_free_depsgraph(pfjob);
   seq_prefetch_init_depsgraph(pfjob);
 }
@@ -499,15 +500,14 @@ static PrefetchJob *seq_prefetch_start(const SeqRenderData *context, float cfra)
       BLI_mutex_init(&pfjob->prefetch_suspend_mutex);
       BLI_condition_init(&pfjob->prefetch_suspend_cond);
 
-      pfjob->bmain = context->bmain;
       pfjob->bmain_eval = BKE_main_new();
-
       pfjob->scene = context->scene;
       seq_prefetch_init_depsgraph(pfjob);
     }
   }
   seq_prefetch_update_scene(context->scene);
   seq_prefetch_update_context(context);
+  pfjob->bmain = context->bmain;
 
   pfjob->cfra = cfra;
   pfjob->num_frames_prefetched = 1;

source/blender/sequencer/intern/sequencer.c

@@ -6045,6 +6045,12 @@ static Sequence *sequencer_check_scene_recursion(Scene *scene, ListBase *seqbase
       return seq;
     }
 
+    if (seq->type == SEQ_TYPE_SCENE && (seq->flag & SEQ_SCENE_STRIPS)) {
+      if (sequencer_check_scene_recursion(scene, &seq->scene->ed->seqbase)) {
+        return seq;
+      }
+    }
+
     if (seq->type == SEQ_TYPE_META && sequencer_check_scene_recursion(scene, &seq->seqbase)) {
       return seq;
     }