source/blender/render/hydra/CMakeLists.txt

@@ -74,6 +74,8 @@ set(SRC
   sceneDelegate/light.cc
   sceneDelegate/world.h
   sceneDelegate/world.cc
+  sceneDelegate/instance.h
+  sceneDelegate/instance.cc
 )
 
 set(LIB

source/blender/render/hydra/finalEngine.cc

@@ -23,7 +23,7 @@ void FinalEngine::sync(BL::Depsgraph &b_depsgraph, BL::Context &b_context, pxr::
 {
   sceneDelegate = std::make_unique<BlenderSceneDelegate>(renderIndex.get(), 
     SdfPath::AbsoluteRootPath().AppendElementString("scene"));
-  sceneDelegate->Populate(b_depsgraph, b_context);
+  sceneDelegate->populate((Depsgraph *)b_depsgraph.ptr.data, (bContext *)b_context.ptr.data);
 
   for (auto const& setting : renderSettings) {
     renderDelegate->SetRenderSetting(setting.first, setting.second);

source/blender/render/hydra/sceneDelegate/blenderSceneDelegate.cc

@@ -1,27 +1,22 @@
 /* SPDX-License-Identifier: Apache-2.0
  * Copyright 2011-2022 Blender Foundation */
 
-#include <pxr/imaging/hd/light.h>
+#include "DEG_depsgraph_query.h"
-#include <pxr/imaging/hd/material.h>
+#include "DNA_scene_types.h"
-#include <pxr/imaging/hd/renderDelegate.h>
-#include <pxr/usd/usdLux/tokens.h>
-#include <pxr/imaging/hdSt/tokens.h>
 
 #include "glog/logging.h"
 
 #include "blenderSceneDelegate.h"
-#include "object.h"
 
-using namespace std;
+using namespace pxr;
 
 namespace blender::render::hydra {
 
 BlenderSceneDelegate::BlenderSceneDelegate(HdRenderIndex* parentIndex, SdfPath const& delegateID)
-  : HdSceneDelegate(parentIndex, delegateID),
+  : HdSceneDelegate(parentIndex, delegateID)
-    b_depsgraph(nullptr),
+  , depsgraph(nullptr)
-    b_context(nullptr),
+  , context(nullptr)
-    view3d(nullptr),
+  , view3d(nullptr)
-    is_populated(false)
 {
 }
 
@@ -54,16 +49,17 @@ void BlenderSceneDelegate::update_material(Material *material)
 
 void BlenderSceneDelegate::update_world()
 {
-  World *world = (World *)b_depsgraph->scene().world().ptr.data;
+  Scene *scene = DEG_get_input_scene(depsgraph);
+  World *world = scene->world;
   if (!world_data) {
     if (world) {
-      world_data = WorldData::init(this, world, (bContext *)b_context->ptr.data);
+      world_data = WorldData::init(this, world, context);
       world_data->insert_prim();
     }
   }
   else {
     if (world) {
-      world_data = WorldData::init(this, world, (bContext *)b_context->ptr.data);
+      world_data = WorldData::init(this, world, context);
       world_data->mark_prim_dirty(IdData::DirtyBits::AllDirty);
     }
     else {
@@ -82,29 +78,53 @@ bool BlenderSceneDelegate::GetVisible(SdfPath const &id)
   return object_data(id)->visible;
 }
 
-void BlenderSceneDelegate::update_collection()
+void BlenderSceneDelegate::update_collection(bool remove, bool visibility)
 {
-  /* add new objects */
+  if (visibility) {
-  std::set<SdfPath> available_objects;
+    /* Check and update visibility */
-  for (auto &inst : b_depsgraph->object_instances) {
+    for (auto &obj : objects) {
-    if (inst.is_instance()) {
+      if (obj.second->update_visibility(view3d)) {
-      continue;
+        obj.second->mark_prim_dirty(IdData::DirtyBits::DirtyVisibility);
+      };
     }
-    Object *object = (Object *)inst.object().ptr.data;
-    if (!supported_object(object)) {
-      continue;
   }
-    available_objects.insert(ObjectData::prim_id(this, object));
 
-    if (!is_populated) {
+  /* Export of new visible objects which were not exported before */
+  std::set<SdfPath> available_objects;
+
+  DEGObjectIterSettings settings = {0};
+  settings.depsgraph = depsgraph;
+  settings.flags = DEG_ITER_OBJECT_FLAG_LINKED_DIRECTLY | DEG_ITER_OBJECT_FLAG_VISIBLE |
+                   DEG_ITER_OBJECT_FLAG_LINKED_VIA_SET | DEG_ITER_OBJECT_FLAG_DUPLI;
+  DEGObjectIterData data = {0};
+  data.settings = &settings;
+  data.graph = settings.depsgraph;
+  data.flag = settings.flags;
+  ITER_BEGIN (DEG_iterator_objects_begin,
+              DEG_iterator_objects_next,
+              DEG_iterator_objects_end,
+              &data, Object *, object) {
+    if (data.dupli_object_current != nullptr) {
+      InstanceData i_data(this, data.dupli_object_current);
+      LOG(INFO) << "Instance: " << i_data.name() << " " << i_data.random_id();
+      continue;
+    }
+    if (!ObjectData::supported(object)) {
+      continue;
+    }
+
+    SdfPath id = ObjectData::prim_id(this, object);
+    if (remove) {
+      available_objects.insert(id);
+    }
+
+    if (!object_data(id)) {
       add_update_object(object, true, true, true);
     }
   }
+  ITER_END;
 
-  if (!is_populated) {
+  if (remove) {
-    return;
-  }
-
     /* remove unused objects */
     for (auto it = objects.begin(); it != objects.end(); ++it) {
       if (available_objects.find(it->first) != available_objects.end()) {
@@ -131,6 +151,7 @@ void BlenderSceneDelegate::update_collection()
       materials.erase(it);
       it = materials.begin();
     }
+  }
 }
 
 void BlenderSceneDelegate::add_update_object(Object *object, bool geometry, bool transform, bool shading)
@@ -198,31 +219,18 @@ MaterialData *BlenderSceneDelegate::material_data(SdfPath const &id)
   return it->second.get();
 }
 
-bool BlenderSceneDelegate::supported_object(Object *object)
+void BlenderSceneDelegate::populate(Depsgraph *deps, bContext *cont)
 {
-  return object->type == OB_MESH ||
+  bool is_populated = depsgraph != nullptr;
-         object->type == OB_LAMP ||
-         object->type == OB_SURF ||
-         object->type == OB_FONT ||
-         object->type == OB_CURVES ||
-         object->type == OB_CURVES_LEGACY ||
-         object->type == OB_MBALL;
-}
 
-void BlenderSceneDelegate::Populate(BL::Depsgraph &b_deps, BL::Context &b_cont)
+  depsgraph = deps;
-{
+  context = cont;
-  LOG(INFO) << "Populate " << is_populated;
+  view3d = CTX_wm_view3d(context);
-
-  b_depsgraph = &b_deps;
-  b_context = &b_cont;
-  view3d = (View3D *)b_context->space_data().ptr.data;
 
   if (!is_populated) {
     /* Export initial objects */
-    update_collection();
+    update_collection(false, false);
     update_world();
-
-    is_populated = true;
     return;
   }
 
@@ -230,96 +238,75 @@ void BlenderSceneDelegate::Populate(BL::Depsgraph &b_deps, BL::Context &b_cont)
   bool do_update_collection = false;
   bool do_update_visibility = false;
   bool do_update_world = false;
+  bool transform, geometry, shading;
 
-  for (auto &update : b_depsgraph->updates) {
+  DEGIDIterData data = {0};
-    BL::ID id = update.id();
+  data.graph = depsgraph;
-    LOG(INFO) << "Update: " << id.name_full() << " ["
+  data.only_updated = true;
-              << update.is_updated_transform()
+  ITER_BEGIN (DEG_iterator_ids_begin,
-              << update.is_updated_geometry()
+              DEG_iterator_ids_next,
-              << update.is_updated_shading() << "]";
+              DEG_iterator_ids_end,
+              &data, ID *, id) {
 
-    if (id.is_a(&RNA_Object)) {
+    transform = (id->recalc & ID_RECALC_TRANSFORM) != 0;
-      Object *object = (Object *)id.ptr.data;
+    shading = (id->recalc & (ID_RECALC_SHADING | ID_RECALC_ANIMATION)) != 0;
-      if (!supported_object(object)) {
+    geometry = (id->recalc & ID_RECALC_GEOMETRY) != 0;
-        continue;
+
+    LOG(INFO) << "Update: " << id->name << " [" << transform << geometry << shading << "]";
+
+    switch (GS(id->name)) {
+      case ID_OB: {
+          Object *object = (Object *)id;
+          if (!ObjectData::supported(object)) {
+            break;
           }
-      add_update_object(object,
+          geometry |= (((ID *)object->data)->recalc & ID_RECALC_GEOMETRY) != 0;
-                        update.is_updated_geometry(),
+          add_update_object(object, geometry, transform, shading);
-                        update.is_updated_transform(),
-                        update.is_updated_shading());
-      continue;
         }
+        break;
 
-    if (id.is_a(&RNA_Material)) {
+      case ID_MA:
-      if (update.is_updated_shading()) {
+        if (shading) {
-        Material *material = (Material *)id.ptr.data;
+          Material *material = (Material *)id;
           update_material(material);
         }
-      continue;
+        break;
-    }
 
-    if (id.is_a(&RNA_Collection)) {
+      case ID_GR:
-      if (update.is_updated_transform() && update.is_updated_geometry()) {
+        if (transform && geometry) {
           do_update_collection = true;
         }
-      continue;
+        break;
-    }
 
-    if (id.is_a(&RNA_Scene)) {
+      case ID_SCE:
-      if (!update.is_updated_geometry() && !update.is_updated_transform() && !update.is_updated_shading()) {
+        if (!geometry && !transform && !shading) {
+          Scene *scene = (Scene *)id;
           do_update_visibility = true;
 
-        Scene *scene = (Scene *)id.ptr.data;
           if ((scene->world && !world_data) || (!scene->world && world_data)) {
             do_update_world = true;
           }
         }
-      continue;
+        break;
-    }
 
-    if (id.is_a(&RNA_World)) {
+      case ID_WO:
-      if (update.is_updated_shading()) {
+        if (shading) {
           do_update_world = true;
         }
-      continue;
+        break;
-    }
-  }
 
-  if (do_update_collection) {
+      default:
-    update_collection();
+        break;
     }
-  if (do_update_visibility) {
+  }
-    update_visibility();
+  ITER_END;
+
+  if (do_update_collection || do_update_visibility) {
+    update_collection(do_update_collection, do_update_visibility);
   }
   if (do_update_world) {
     update_world();
   }
-
-}
-
-void BlenderSceneDelegate::update_visibility()
-{
-  /* Check and update visibility */
-  for (auto &obj : objects) {
-    if (obj.second->update_visibility(view3d)) {
-      obj.second->mark_prim_dirty(IdData::DirtyBits::DirtyVisibility);
-    };
-  }
-
-  /* Export of new visible objects which were not exported before */
-  for (auto &inst : b_depsgraph->object_instances) {
-    if (inst.is_instance()) {
-      continue;
-    }
-    Object *object = (Object *)inst.object().ptr.data;
-    if (!supported_object(object)) {
-      continue;
-    }
-
-    if (!object_data(ObjectData::prim_id(this, object))) {
-      add_update_object(object, true, true, true);
-    }
-  }
 }
 
 HdMeshTopology BlenderSceneDelegate::GetMeshTopology(SdfPath const& id)

source/blender/render/hydra/sceneDelegate/blenderSceneDelegate.h

@@ -3,65 +3,57 @@
 
 #pragma once
 
-#include <map>
-
-#include <pxr/pxr.h>
-#include <pxr/imaging/hd/camera.h>
 #include <pxr/imaging/hd/sceneDelegate.h>
-#include <pxr/imaging/hd/renderIndex.h>
-#include <pxr/usd/usd/stage.h>
 
-#include "MEM_guardedalloc.h"
+#include "BKE_context.h"
-#include "RNA_blender_cpp.h"
+#include "DEG_depsgraph.h"
 
 #include "object.h"
 #include "mesh.h"
 #include "light.h"
 #include "world.h"
-
+#include "instance.h"
-using namespace pxr;
 
 namespace blender::render::hydra {
 
-class BlenderSceneDelegate : public HdSceneDelegate {
+class BlenderSceneDelegate : public pxr::HdSceneDelegate {
 public:
-  BlenderSceneDelegate(HdRenderIndex* renderIndex, SdfPath const &delegateId);
+  BlenderSceneDelegate(pxr::HdRenderIndex *renderIndex, pxr::SdfPath const &delegateId);
   ~BlenderSceneDelegate() override = default;
 
-  void Populate(BL::Depsgraph &b_deps, BL::Context &b_context);
+  void populate(Depsgraph *depsgraph, bContext *context);
 
   // delegate methods
-  HdMeshTopology GetMeshTopology(SdfPath const& id) override;
+  pxr::HdMeshTopology GetMeshTopology(pxr::SdfPath const &id) override;
-  GfMatrix4d GetTransform(SdfPath const& id) override;
+  pxr::GfMatrix4d GetTransform(pxr::SdfPath const &id) override;
-  VtValue Get(SdfPath const& id, TfToken const& key) override;
+  pxr::VtValue Get(pxr::SdfPath const &id, pxr::TfToken const &key) override;
-  VtValue GetLightParamValue(SdfPath const& id, TfToken const& key) override;
+  pxr::VtValue GetLightParamValue(pxr::SdfPath const &id, pxr::TfToken const &key) override;
-  HdPrimvarDescriptorVector GetPrimvarDescriptors(SdfPath const& id, HdInterpolation interpolation) override;
+  pxr::HdPrimvarDescriptorVector GetPrimvarDescriptors(pxr::SdfPath const &id, pxr::HdInterpolation interpolation) override;
-  SdfPath GetMaterialId(SdfPath const &rprimId) override;
+  pxr::SdfPath GetMaterialId(pxr::SdfPath const &rprimId) override;
-  VtValue GetMaterialResource(SdfPath const &materialId) override;
+  pxr::VtValue GetMaterialResource(pxr::SdfPath const &materialId) override;
-  bool GetVisible(SdfPath const &id) override;
+  bool GetVisible(pxr::SdfPath const &id) override;
 
 private:
-  ObjectData *object_data(SdfPath const &id);
+  ObjectData *object_data(pxr::SdfPath const &id);
-  MeshData *mesh_data(SdfPath const &id);
+  MeshData *mesh_data(pxr::SdfPath const &id);
-  LightData *light_data(SdfPath const &id);
+  LightData *light_data(pxr::SdfPath const &id);
-  MaterialData *material_data(SdfPath const &id);
+  MaterialData *material_data(pxr::SdfPath const &id);
-  bool supported_object(Object *object);
 
   void add_update_object(Object *object, bool geometry, bool transform, bool shading);
   void set_material(MeshData &mesh_data);
   void update_material(Material *material);
   void update_world();
-  void update_collection();
+  void update_collection(bool remove, bool visibility);
-  void update_visibility();
 
 private:  
-  BL::Depsgraph *b_depsgraph;
+  Depsgraph *depsgraph;
-  BL::Context *b_context;
+  bContext *context;
   View3D *view3d;
-  bool is_populated;
+
   ObjectDataMap objects;
   MaterialDataMap materials;
   std::unique_ptr<WorldData> world_data;
+  InstanceDataMap instances;
 };
 
 } // namespace blender::render::hydra

source/blender/render/hydra/sceneDelegate/instance.cc

@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright 2011-2022 Blender Foundation */
+
+#include "instance.h"
+
+using namespace pxr;
+
+namespace blender::render::hydra {
+
+InstanceData::InstanceData(pxr::HdSceneDelegate *scene_delegate, DupliObject *dupli)
+  : IdData(scene_delegate, (ID *)dupli->ob_data)
+  , dupli(dupli)
+{
+}
+
+int InstanceData::random_id()
+{
+  return dupli->random_id;
+}
+
+VtValue InstanceData::get_data(TfToken const &key)
+{
+  return VtValue();
+}
+
+void InstanceData::insert_prim()
+{
+}
+
+void InstanceData::remove_prim()
+{
+}
+
+void InstanceData::mark_prim_dirty(DirtyBits dirty_bits)
+{
+}
+
+} // namespace blender::render::hydra

source/blender/render/hydra/sceneDelegate/instance.h

@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: Apache-2.0
+ * Copyright 2011-2022 Blender Foundation */
+
+#pragma once
+
+#include "BKE_duplilist.h"
+
+#include "id.h"
+
+namespace blender::render::hydra {
+
+class InstanceData: public IdData {
+public:
+  InstanceData(pxr::HdSceneDelegate *scene_delegate, DupliObject *dupli);
+
+  int random_id();
+
+  pxr::VtValue get_data(pxr::TfToken const &key) override;
+  void insert_prim() override;
+  void remove_prim() override;
+  void mark_prim_dirty(DirtyBits dirty_bits) override;
+
+public:
+  DupliObject *dupli;
+};
+
+using InstanceDataMap = pxr::TfHashMap<pxr::SdfPath, std::unique_ptr<InstanceData>, pxr::SdfPath::Hash>;
+
+} // namespace blender::render::hydra

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

@@ -151,6 +151,8 @@ void LightData::remove_prim()
 
 void LightData::mark_prim_dirty(DirtyBits dirty_bits)
 {
+  /* TODO: prim_type was changed we have to do remove..add light */
+
   HdDirtyBits bits = HdLight::Clean;
   switch (dirty_bits) {
     case DirtyBits::DirtyTransform:

source/blender/render/hydra/sceneDelegate/material.h

@@ -13,9 +13,6 @@
 
 namespace blender::render::hydra {
 
-class MaterialData;
-using MaterialDataMap = pxr::TfHashMap<pxr::SdfPath, std::unique_ptr<MaterialData>, pxr::SdfPath::Hash>;
-
 class MaterialData: IdData {
  public:
   static std::unique_ptr<MaterialData> init(pxr::HdSceneDelegate *scene_delegate, Material *material);
@@ -35,4 +32,6 @@ private:
   pxr::SdfAssetPath mtlx_path;
 };
 
+using MaterialDataMap = pxr::TfHashMap<pxr::SdfPath, std::unique_ptr<MaterialData>, pxr::SdfPath::Hash>;
+
 } // namespace blender::render::hydra

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

@@ -160,6 +160,14 @@ void MeshData::mark_prim_dirty(DirtyBits dirty_bits)
 {
   SdfPath p_id = prim_id(scene_delegate, (Object *)id);
   if (!scene_delegate->GetRenderIndex().HasRprim(p_id)) {
+    /* Trying to insert prim */
+    insert_prim();
+    return;
+  }
+
+  if (face_vertex_counts.empty()) {
+    /* Remove prim without faces */
+    remove_prim();
     return;
   }
 

source/blender/render/hydra/sceneDelegate/object.cc

@@ -12,6 +12,24 @@ using namespace pxr;
 
 namespace blender::render::hydra {
 
+bool ObjectData::supported(Object *object)
+{
+  switch (object->type) {
+    case OB_MESH:
+    case OB_SURF:
+    case OB_FONT:
+    case OB_CURVES:
+    case OB_CURVES_LEGACY:
+    case OB_MBALL:
+    case OB_LAMP:
+      return true;
+
+    default:
+      break;
+  }
+  return false;
+}
+
 std::unique_ptr<ObjectData> ObjectData::init(pxr::HdSceneDelegate *scene_delegate, Object *object)
 {
   switch (object->type) {

source/blender/render/hydra/sceneDelegate/object.h

@@ -14,11 +14,9 @@
 
 namespace blender::render::hydra {
 
-class ObjectData;
-using ObjectDataMap = pxr::TfHashMap<pxr::SdfPath, std::unique_ptr<ObjectData>, pxr::SdfPath::Hash>;
-
 class ObjectData: public IdData {
 public:
+  static bool supported(Object *object);
   static std::unique_ptr<ObjectData> init(pxr::HdSceneDelegate *scene_delegate, Object *object);
   static pxr::SdfPath prim_id(pxr::HdSceneDelegate *scene_delegate, Object *object);
 
@@ -31,6 +29,6 @@ public:
   bool visible;
 };
 
-
+using ObjectDataMap = pxr::TfHashMap<pxr::SdfPath, std::unique_ptr<ObjectData>, pxr::SdfPath::Hash>;
 
 } // namespace blender::render::hydra

source/blender/render/hydra/viewportEngine.cc

@@ -246,7 +246,7 @@ void ViewportEngine::sync(BL::Depsgraph &b_depsgraph, BL::Context &b_context, Hd
     sceneDelegate = std::make_unique<BlenderSceneDelegate>(renderIndex.get(), 
       SdfPath::AbsoluteRootPath().AppendElementString("scene"));
   }
-  sceneDelegate->Populate(b_depsgraph, b_context);
+  sceneDelegate->populate((Depsgraph *)b_depsgraph.ptr.data, (bContext *)b_context.ptr.data);
 
   for (auto const& setting : renderSettings) {
     renderDelegate->SetRenderSetting(setting.first, setting.second);