[Bf-blender-cvs] [3f23de9a3fc] blender-v2.83-release: Fix T78920: missing depsgraph relation when using sound strips in VSE

[Sybren A. Stüvel]

Commit: 3f23de9a3fc5cd78174237fb0b5a433032a8042c
Author: Sybren A. Stüvel
Date:   Tue Jul 14 16:31:54 2020 +0200
Branches: blender-v2.83-release
https://developer.blender.org/rB3f23de9a3fc5cd78174237fb0b5a433032a8042c

Fix T78920: missing depsgraph relation when using sound strips in VSE

Having a sound strip in the VSE caused a missing relation error to be
logged on the console. This was caused by the AUDIO depsgraph component
not having an entry node. This commits adds that node, and sets up
relations correctly.

Differential Revision: https://developer.blender.org/D8290

Reviewed By: Sergey

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

M	source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
M	source/blender/depsgraph/intern/builder/deg_builder_relations.cc
M	source/blender/depsgraph/intern/node/deg_node_operation.cc
M	source/blender/depsgraph/intern/node/deg_node_operation.h

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

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
index 32fddd3164c..afe9383a5a7 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
@@ -1807,6 +1807,10 @@ void DepsgraphNodeBuilder::build_scene_audio(Scene *scene)
     return;
   }
 
+  OperationNode *audio_entry_node = add_operation_node(
+      &scene->id, NodeType::AUDIO, OperationCode::AUDIO_ENTRY);
+  audio_entry_node->set_as_entry();
+
   add_operation_node(&scene->id, NodeType::AUDIO, OperationCode::SOUND_EVAL);
 
   Scene *scene_cow = get_cow_datablock(scene);
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index 2bd8ac7d84d..4fb893b350c 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -2617,8 +2617,10 @@ void DepsgraphRelationBuilder::build_scene_sequencer(Scene *scene)
 
 void DepsgraphRelationBuilder::build_scene_audio(Scene *scene)
 {
+  OperationKey scene_audio_entry_key(&scene->id, NodeType::AUDIO, OperationCode::AUDIO_ENTRY);
   OperationKey scene_audio_volume_key(&scene->id, NodeType::AUDIO, OperationCode::AUDIO_VOLUME);
   OperationKey scene_sound_eval_key(&scene->id, NodeType::AUDIO, OperationCode::SOUND_EVAL);
+  add_relation(scene_audio_entry_key, scene_audio_volume_key, "Audio Entry -> Volume");
   add_relation(scene_audio_volume_key, scene_sound_eval_key, "Audio Volume -> Sound");
 
   if (scene->audio.flag & AUDIO_VOLUME_ANIMATED) {
diff --git a/source/blender/depsgraph/intern/node/deg_node_operation.cc b/source/blender/depsgraph/intern/node/deg_node_operation.cc
index 1a73d81d053..5fc4c43a673 100644
--- a/source/blender/depsgraph/intern/node/deg_node_operation.cc
+++ b/source/blender/depsgraph/intern/node/deg_node_operation.cc
@@ -61,6 +61,8 @@ const char *operationCodeAsString(OperationCode opcode)
     /* Scene related. */
     case OperationCode::SCENE_EVAL:
       return "SCENE_EVAL";
+    case OperationCode::AUDIO_ENTRY:
+      return "AUDIO_ENTRY";
     case OperationCode::AUDIO_VOLUME:
       return "AUDIO_VOLUME";
     /* Object related. */
diff --git a/source/blender/depsgraph/intern/node/deg_node_operation.h b/source/blender/depsgraph/intern/node/deg_node_operation.h
index 214f5e8b094..23cc419db36 100644
--- a/source/blender/depsgraph/intern/node/deg_node_operation.h
+++ b/source/blender/depsgraph/intern/node/deg_node_operation.h
@@ -60,6 +60,7 @@ enum class OperationCode {
 
   /* Scene related. ------------------------------------------------------- */
   SCENE_EVAL,
+  AUDIO_ENTRY,
   AUDIO_VOLUME,
 
   /* Object related. ------------------------------------------------------ */