GPencil: Refactor of Draw Engine, Vertex Paint and all internal functions

This commit is a full refactor of the grease pencil modules including Draw Engine, Modifiers, VFX, depsgraph update, improvements in operators and conversion of Sculpt and Weight paint tools to real brushes.

Also, a huge code cleanup has been done at all levels.

Thanks to @fclem for his work and yo @pepeland and @mendio for the testing and help in the development.

Differential Revision: https://developer.blender.org/D6293

2 files changed, 10 insertions, 1 deletions

diff --git a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
index 687ee492c3b..01d84f6b5d8 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_nodes.cc
@@ -1310,7 +1310,7 @@ void DepsgraphNodeBuilder::build_object_data_geometry_datablock(ID *obdata, bool
           obdata,
           NodeType::GEOMETRY,
           OperationCode::GEOMETRY_EVAL,
-          function_bind(BKE_gpencil_eval_geometry, _1, (bGPdata *)obdata_cow));
+          function_bind(BKE_gpencil_frame_active_set, _1, (bGPdata *)obdata_cow));
       op_node->set_as_entry();
       break;
     }
diff --git a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
index 78e05a69819..6791125d1e9 100644
--- a/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
+++ b/source/blender/depsgraph/intern/builder/deg_builder_relations.cc
@@ -2123,6 +2123,15 @@ void DepsgraphRelationBuilder::build_object_data_geometry_datablock(ID *obdata)
           add_relation(material_key, geometry_key, "Material -> GP Data");
         }
       }
+
+      /* Layer parenting need react to the parent object transformation. */
+      LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) {
+        if (gpl->parent != NULL) {
+          ComponentKey transform_key(&gpl->parent->id, NodeType::TRANSFORM);
+          ComponentKey gpd_geom_key(&gpd->id, NodeType::GEOMETRY);
+          add_relation(transform_key, gpd_geom_key, "GPencil Parent Layer");
+        }
+      }
       break;
     }
     default: