Depsgraph: Cleanup, Make variable less ambiguous and more clear

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

@@ -90,7 +90,7 @@ void AbstractBuilderPipeline::build_step_finalize()
   }
 #endif
   /* Relations are up to date. */
-  deg_graph_->need_update = false;
+  deg_graph_->need_update_relations = false;
 }
 
 unique_ptr<DepsgraphNodeBuilder> AbstractBuilderPipeline::construct_node_builder()

source/blender/depsgraph/intern/depsgraph.cc

@@ -45,7 +45,7 @@ namespace blender::deg {
 
 Depsgraph::Depsgraph(Main *bmain, Scene *scene, ViewLayer *view_layer, eEvaluationMode mode)
     : time_source(nullptr),
-      need_update(true),
+      need_update_relations(true),
       need_tag_id_on_graph_visibility_update(true),
       need_tag_id_on_graph_visibility_time_update(false),
       bmain(bmain),

source/blender/depsgraph/intern/depsgraph.h

@@ -89,7 +89,7 @@ struct Depsgraph {
   TimeSourceNode *time_source;
 
   /* Indicates whether relations needs to be updated. */
-  bool need_update;
+  bool need_update_relations;
 
   /* Indicated whether IDs in this graph are to be tagged as if they first appear visible, with
    * an optional tag for their animation (time) update. */

source/blender/depsgraph/intern/depsgraph_build.cc

@@ -270,7 +270,7 @@ void DEG_graph_tag_relations_update(Depsgraph *graph)
 {
   DEG_DEBUG_PRINTF(graph, TAG, "%s: Tagging relations for update.\n", __func__);
   deg::Depsgraph *deg_graph = reinterpret_cast<deg::Depsgraph *>(graph);
-  deg_graph->need_update = true;
+  deg_graph->need_update_relations = true;
   /* NOTE: When relations are updated, it's quite possible that
    * we've got new bases in the scene. This means, we need to
    * re-create flat array of bases in view layer.
@@ -286,7 +286,7 @@ void DEG_graph_tag_relations_update(Depsgraph *graph)
 void DEG_graph_relations_update(Depsgraph *graph)
 {
   deg::Depsgraph *deg_graph = (deg::Depsgraph *)graph;
-  if (!deg_graph->need_update) {
+  if (!deg_graph->need_update_relations) {
     /* Graph is up to date, nothing to do. */
     return;
   }

source/blender/depsgraph/intern/depsgraph_query.cc

@@ -328,7 +328,7 @@ bool DEG_is_fully_evaluated(const struct Depsgraph *depsgraph)
 {
   const deg::Depsgraph *deg_graph = (const deg::Depsgraph *)depsgraph;
   /* Check whether relations are up to date. */
-  if (deg_graph->need_update) {
+  if (deg_graph->need_update_relations) {
     return false;
   }
   /* Check whether IDs are up to date. */