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

@@ -172,21 +172,30 @@ pxr::SdfPathVector InstancerData::prototypes() const
 void InstancerData::check_update(Object *object)
 {
   pxr::SdfPath path = object_prim_id(object);
-  auto it = mesh_instances_.find(path);
+  auto m_it = mesh_instances_.find(path);
-  if (it == mesh_instances_.end()) {
+  if (m_it != mesh_instances_.end()) {
-    return;
+    m_it->second.data->update();
-  }
-  ObjectData *obj_data = it->second.data.get();
-  obj_data->update();
 
     pxr::HdDirtyBits bits = pxr::HdChangeTracker::Clean;
-  if (object->id.recalc & ID_RECALC_TRANSFORM) {
+    if (m_it->second.data->id->recalc & ID_RECALC_TRANSFORM) {
       set_instances();
       bits |= pxr::HdChangeTracker::DirtyTransform;
     }
     if (bits != pxr::HdChangeTracker::Clean) {
       scene_delegate_->GetRenderIndex().GetChangeTracker().MarkInstancerDirty(prim_id, bits);
     }
+    return;
+  }
+
+  auto l_it = light_instances_.find(path);
+  if (l_it != light_instances_.end()) {
+    Object *obj = (Object *)l_it->second.data->id;
+    if (obj->id.recalc & (ID_RECALC_TRANSFORM | ID_RECALC_GEOMETRY) ||
+        ((ID *)obj->data)->recalc & ID_RECALC_GEOMETRY) {
+      set_instances();
+    }
+    return;
+  }
 }
 
 void InstancerData::check_remove(std::set<std::string> &available_objects)
@@ -206,6 +215,17 @@ void InstancerData::check_remove(std::set<std::string> &available_objects)
     scene_delegate_->GetRenderIndex().GetChangeTracker().MarkInstancerDirty(
         prim_id, pxr::HdChangeTracker::AllDirty);
   }
+
+  for (auto it = light_instances_.begin(); it != light_instances_.end(); ++it) {
+    if (available_objects.find(it->first.GetName()) != available_objects.end()) {
+      continue;
+    }
+    it->second.transforms.clear();
+    update_light_instance(it->second);
+
+    light_instances_.erase(it);
+    it = light_instances_.begin();
+  }
 }
 
 void InstancerData::available_materials(std::set<pxr::SdfPath> &paths) const
@@ -233,6 +253,20 @@ pxr::SdfPath InstancerData::object_prim_id(Object *object) const
   return prim_id.AppendElementString(str);
 }
 
+pxr::SdfPath InstancerData::light_prim_id(LightInstance const &inst, int index) const
+{
+  char name[16];
+  snprintf(name, 16, "L_%08x", index);
+  return inst.data->prim_id.AppendElementString(name);
+}
+
+int InstancerData::light_prim_id_index(pxr::SdfPath const &id) const
+{
+  int index;
+  sscanf_s(id.GetName().c_str(), "L_%x", &index);
+  return index;
+}
+
 void InstancerData::set_instances()
 {
   mesh_transforms_.clear();
@@ -339,7 +373,8 @@ void InstancerData::update_light_instance(LightInstance &inst)
   else {
     /* Update light instances*/
     pxr::HdDirtyBits bits = pxr::HdLight::DirtyTransform;
-    if (id->recalc & ID_RECALC_GEOMETRY) {
+    Object *obj = (Object *)inst.data->id;
+    if (obj->id.recalc & ID_RECALC_GEOMETRY || ((ID *)obj->data)->recalc & ID_RECALC_GEOMETRY) {
       l_data.init();
       bits = pxr::HdLight::AllDirty;
     }
@@ -359,18 +394,4 @@ void InstancerData::update_light_instance(LightInstance &inst)
   }
 }
 
-pxr::SdfPath InstancerData::light_prim_id(LightInstance const &inst, int index) const
-{
-  char name[16];
-  snprintf(name, 16, "L_%08x", index);
-  return inst.data->prim_id.AppendElementString(name);
-}
-
-int InstancerData::light_prim_id_index(pxr::SdfPath const &id) const
-{
-  int index;
-  sscanf_s(id.GetName().c_str(), "L_%x", &index);
-  return index;
-}
-
 }  // namespace blender::render::hydra

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

@@ -50,10 +50,10 @@ class InstancerData : public ObjectData {
 
  private:
   pxr::SdfPath object_prim_id(Object *object) const;
-  void set_instances();
-  void update_light_instance(LightInstance &inst);
   pxr::SdfPath light_prim_id(LightInstance const &inst, int index) const;
   int light_prim_id_index(pxr::SdfPath const &id) const;
+  void set_instances();
+  void update_light_instance(LightInstance &inst);
 
   pxr::TfHashMap<pxr::SdfPath, MeshInstance, pxr::SdfPath::Hash> mesh_instances_;
   pxr::TfHashMap<pxr::SdfPath, LightInstance, pxr::SdfPath::Hash> light_instances_;

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

@@ -113,7 +113,7 @@ void LightData::update()
   }
 
   pxr::HdDirtyBits bits = pxr::HdLight::Clean;
-  if (id->recalc & ID_RECALC_GEOMETRY) {
+  if (id->recalc & ID_RECALC_GEOMETRY || light->id.recalc & ID_RECALC_GEOMETRY) {
     init();
     bits = pxr::HdLight::AllDirty;
   }
@@ -121,8 +121,10 @@ void LightData::update()
     write_transform();
     bits = pxr::HdLight::DirtyTransform;
   }
+  if (bits != pxr::HdChangeTracker::Clean) {
     scene_delegate_->GetRenderIndex().GetChangeTracker().MarkSprimDirty(prim_id, bits);
   }
+}
 
 pxr::VtValue LightData::get_data(pxr::TfToken const &key) const
 {