source/blender/render/hydra/scene_delegate/blender_scene_delegate.cc

@@ -119,9 +119,6 @@ void BlenderSceneDelegate::update_collection(bool remove, bool visibility)
     if (!ObjectData::supported(object)) {
       continue;
     }
-    if ((object->transflag & OB_DUPLI) && InstancerData::supported(object)) {
-      add_update_instancer(object);
-    }
 
     id = ObjectData::prim_id(this, object);
     if (remove) {
@@ -170,10 +167,17 @@ void BlenderSceneDelegate::update_collection(bool remove, bool visibility)
 
 void BlenderSceneDelegate::add_update_object(Object *object)
 {
+  if ((object->transflag & OB_DUPLI) && InstancerData::supported(object)) {
+    add_update_instancer(object);
+  }
   pxr::SdfPath id = ObjectData::prim_id(this, object);
   ObjectData *obj_data = object_data(id);
   if (obj_data) {
     obj_data->update();
+    return;
+  }
+  if (view3d && !BKE_object_is_visible_in_viewport(view3d, object)) {
+    return;
   }
   objects[id] = ObjectData::create(this, object);
   obj_data = object_data(id);
@@ -186,6 +190,7 @@ void BlenderSceneDelegate::add_update_instancer(Object *object)
   InstancerData *i_data = instancer_data(id, true);
   if (i_data) {
     i_data->update();
+    return;
   }
   objects[id] = InstancerData::create(this, object);
   i_data = instancer_data(id, true);

source/blender/render/hydra/scene_delegate/instancer.cc

@@ -63,10 +63,12 @@ void InstancerData::init()
   ListBase *lb = object_duplilist(scene_delegate->depsgraph, scene_delegate->scene, parent_obj);
   LISTBASE_FOREACH (DupliObject *, dupli, lb) {
     if (!id) {
+      /* TODO: We create instances only for object in first dupli.
+         Instances should be created for all objects */
       id = (ID *)dupli->ob;
     }
     transforms.push_back(gf_matrix_from_transform(dupli->mat));
-    CLOG_INFO(LOG_BSD, 2, "Instance %s %d", id->name, dupli->random_id);
+    CLOG_INFO(LOG_BSD, 2, "Instance %s (%s) %d", id->name, ((ID *)dupli->ob)->name, dupli->random_id);
   }
   free_object_duplilist(lb);
 
@@ -121,7 +123,7 @@ VtIntArray InstancerData::instance_indices()
 
 void InstancerData::insert()
 {
-  CLOG_INFO(LOG_BSD, 2, "%s", id->name);
+  CLOG_INFO(LOG_BSD, 2, "%s", ((ID *)parent_obj)->name);
   MeshData::insert();
 
   if (face_vertex_counts.empty()) {
@@ -132,7 +134,7 @@ void InstancerData::insert()
 
 void InstancerData::remove()
 {
-  CLOG_INFO(LOG_BSD, 2, "%s", id->name);
+  CLOG_INFO(LOG_BSD, 2, "%s", ((ID *)parent_obj)->name);
 
   if (!scene_delegate->GetRenderIndex().HasInstancer(instancer_id)) {
     return;
@@ -144,8 +146,29 @@ void InstancerData::remove()
 
 void InstancerData::update()
 {
-  CLOG_INFO(LOG_BSD, 2, "%s", id->name);
+  CLOG_INFO(LOG_BSD, 2, "%s", ((ID *)parent_obj)->name);
-  MeshData::update();
+
+  pxr::HdDirtyBits bits = pxr::HdChangeTracker::Clean;
+  unsigned int recalc = ((ID *)parent_obj)->recalc;
+
+  if ((recalc & ID_RECALC_GEOMETRY) || (((ID *)parent_obj->data)->recalc & ID_RECALC_GEOMETRY)) {
+    init();
+    bits = pxr::HdChangeTracker::AllDirty;
+  }
+  else if (recalc & ID_RECALC_TRANSFORM) {
+    transforms.clear();
+    ListBase *lb = object_duplilist(scene_delegate->depsgraph, scene_delegate->scene, parent_obj);
+    LISTBASE_FOREACH (DupliObject *, dupli, lb) {
+      transforms.push_back(gf_matrix_from_transform(dupli->mat));
+    }
+    free_object_duplilist(lb);
+
+    bits |= pxr::HdChangeTracker::DirtyTransform;
+  }
+  if (bits != pxr::HdChangeTracker::Clean) {
+    scene_delegate->GetRenderIndex().GetChangeTracker().MarkInstancerDirty(instancer_id, bits);
+  }
+  //scene_delegate->GetRenderIndex().GetChangeTracker().MarkRprimDirty(p_id, bits);
 }
 
 }  // namespace blender::render::hydra

source/blender/render/hydra/scene_delegate/mesh.cc

@@ -223,6 +223,10 @@ void MeshData::update()
     }
   }
 
+  if (bits == pxr::HdChangeTracker::Clean) {
+    return;
+  }
+
   if (!scene_delegate->GetRenderIndex().HasRprim(p_id)) {
     insert();
     return;