secene 接入 多继承链

Kernel/tests/renderive/scene/Scene_State_Observer_Test.cpp

@@ -16,12 +16,17 @@ struct Scene_State_Observer_Test_Time_Source {
 };
 struct Scene_State_Observer_Test_Data {
     std::vector<Scene_Base::Observation_Event> events;
+    std::atomic<int> complete_snapshot_count{};
 };
 struct Scene_State_Observer_Test_Recorder {
     static constexpr bool enabled = true;
     std::shared_ptr<Scene_State_Observer_Test_Data> data{std::make_shared<Scene_State_Observer_Test_Data>()};
     void observe(const Scene_Base::Observation& observation) noexcept {
         data->events.push_back(observation.event);
+        if (observation.topology && observation.frame_snapshot &&
+            observation.render_plan)
+            data->complete_snapshot_count.fetch_add(1,
+                                                    std::memory_order_relaxed);
     }
 };
 using Scene_State_Observer_Test_Scene_Observer = Observer_State<Scene_State_Observer_Test_Recorder, Scene_State_Observer_Test_Time_Source>;
@@ -37,6 +42,7 @@ TEST(scene_state_observer_test, scene_uses_double_state_and_observes_lifecycle)
     scene.wait_for_render();
     EXPECT_EQ(render.read(static_cast<const Scene::Scene_State_Strategy&>(scene)).value, 9);
     EXPECT_EQ(recorder.data->events, (std::vector<Scene_Base::Observation_Event>{Scene_Base::Observation_Event::render_submitted, Scene_Base::Observation_Event::render_started, Scene_Base::Observation_Event::render_completed}));
+    EXPECT_EQ(recorder.data->complete_snapshot_count.load(), 3);
 }
 struct Scene_Reentrant_Observer_Data {
     std::function<void(Scene_Base::Observation_Event)> callback;