Adding basic depth prepass

src/Engine/Scene/SceneUpdater.h

@@ -1,16 +1,30 @@
 #pragma once
-#include "Containers/Array.h"
+#include "Containers/List.h"
+#include <semaphore>
 
 namespace Seele
 {
+DECLARE_REF(Component);
+DECLARE_REF(Actor);
 class SceneUpdater
 {
 public:
     SceneUpdater();
     ~SceneUpdater();
+    void registerComponentUpdate(PComponent component);
+    void registerActorUpdate(PActor actor);
+    void runUpdates(float delta);
 private:
     Array<std::thread> workers;
-    List<std::function<void(float)> pendingUpdates;
+    std::mutex pendingUpdatesLock;
+    std::counting_semaphore<> pendingUpdatesSem;
+    List<std::function<void(float)>> pendingUpdates;
+    List<std::function<void(float)>> updatesRan;
     void work();
+    float frameDelta;
+    std::atomic_bool running;
+    std::mutex frameFinishedLock;
+    std::condition_variable frameFinishedCV;
 };
+DEFINE_REF(SceneUpdater)
 } // namespace Seele