[Bf-blender-cvs] [c9672084601] blender-v2.92-release: Fix T79922: Cache of meta strip not invalidated

[Richard Antalik]

Commit: c9672084601e1563763ccc5b89d3c0c6bfd1c630
Author: Richard Antalik
Date:   Tue Jan 26 17:41:49 2021 +0100
Branches: blender-v2.92-release
https://developer.blender.org/rBc9672084601e1563763ccc5b89d3c0c6bfd1c630

Fix T79922: Cache of meta strip not invalidated

Meta strip cache is not invalidated if strip inside of meta strip is
invalidated.

Find all metastrips that contain invalidated strip and invalidate them
recursively.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D10192

===================================================================

M	source/blender/sequencer/intern/strip_relations.c

===================================================================

diff --git a/source/blender/sequencer/intern/strip_relations.c b/source/blender/sequencer/intern/strip_relations.c
index 18ae21e3a65..1a2ff08bd08 100644
--- a/source/blender/sequencer/intern/strip_relations.c
+++ b/source/blender/sequencer/intern/strip_relations.c
@@ -127,17 +127,49 @@ static void sequence_invalidate_cache(Scene *scene,
   SEQ_prefetch_stop(scene);
 }
 
+/* Find metastrips that contain invalidated_seq and invalidate them. */
+static bool seq_relations_find_and_invalidate_metas(Scene *scene,
+                                                    Sequence *invalidated_seq,
+                                                    Sequence *meta_seq)
+{
+  ListBase *seqbase;
+
+  if (meta_seq == NULL) {
+    Editing *ed = SEQ_editing_get(scene, false);
+    seqbase = &ed->seqbase;
+  }
+  else {
+    seqbase = &meta_seq->seqbase;
+  }
+
+  LISTBASE_FOREACH (Sequence *, seq, seqbase) {
+    if (seq->type == SEQ_TYPE_META) {
+      if (seq_relations_find_and_invalidate_metas(scene, invalidated_seq, seq)) {
+        sequence_invalidate_cache(scene, seq, true, SEQ_CACHE_ALL_TYPES);
+        return true;
+      }
+    }
+    if (seq == invalidated_seq && meta_seq != NULL) {
+      sequence_invalidate_cache(scene, meta_seq, true, SEQ_CACHE_ALL_TYPES);
+      return true;
+    }
+  }
+  return false;
+}
+
 void SEQ_relations_invalidate_cache_in_range(Scene *scene,
                                              Sequence *seq,
                                              Sequence *range_mask,
                                              int invalidate_types)
 {
   seq_cache_cleanup_sequence(scene, seq, range_mask, invalidate_types, true);
+  seq_relations_find_and_invalidate_metas(scene, seq, NULL);
 }
 
 void SEQ_relations_invalidate_cache_raw(Scene *scene, Sequence *seq)
 {
   sequence_invalidate_cache(scene, seq, true, SEQ_CACHE_ALL_TYPES);
+  seq_relations_find_and_invalidate_metas(scene, seq, NULL);
 }
 
 void SEQ_relations_invalidate_cache_preprocessed(Scene *scene, Sequence *seq)
@@ -147,6 +179,7 @@ void SEQ_relations_invalidate_cache_preprocessed(Scene *scene, Sequence *seq)
                             true,
                             SEQ_CACHE_STORE_PREPROCESSED | SEQ_CACHE_STORE_COMPOSITE |
                                 SEQ_CACHE_STORE_FINAL_OUT);
+  seq_relations_find_and_invalidate_metas(scene, seq, NULL);
 }
 
 void SEQ_relations_invalidate_cache_composite(Scene *scene, Sequence *seq)
@@ -157,6 +190,7 @@ void SEQ_relations_invalidate_cache_composite(Scene *scene, Sequence *seq)
 
   sequence_invalidate_cache(
       scene, seq, true, SEQ_CACHE_STORE_COMPOSITE | SEQ_CACHE_STORE_FINAL_OUT);
+  seq_relations_find_and_invalidate_metas(scene, seq, NULL);
 }
 
 void SEQ_relations_invalidate_dependent(Scene *scene, Sequence *seq)
@@ -167,6 +201,7 @@ void SEQ_relations_invalidate_dependent(Scene *scene, Sequence *seq)
 
   sequence_invalidate_cache(
       scene, seq, false, SEQ_CACHE_STORE_COMPOSITE | SEQ_CACHE_STORE_FINAL_OUT);
+  seq_relations_find_and_invalidate_metas(scene, seq, NULL);
 }
 
 static void invalidate_scene_strips(Scene *scene, Scene *scene_target, ListBase *seqbase)