feat: add JobSystem

destrum/src/App.cpp

@@ -16,6 +16,7 @@
 #include <destrum/Scene/ResourceCollector.h>
 #include <destrum/Scene/Scene.h>
 #include <destrum/Scene/SceneManager.h>
+#include <destrum/Threading/JobSystem.h>
 #include <destrum/Util/DeltaTime.h>
 
 namespace {
@@ -60,6 +61,7 @@ void App::init(const AppParams& params)
         tracy::SetThreadName("Main Thread");
         TracySetProgramName(params.appName.c_str());
         AssetFS::GetInstance().Init(params.exeDir);
+        JobSystem::GetInstance().Init();
 
         window.Create({
             .title = params.windowTitle,
@@ -171,6 +173,7 @@ void App::run()
             continue;
         }
 
+        JobSystem::GetInstance().DrainMainThreadQueue();
         if (layer) {
             layer->onBeginFrame();
         }
@@ -386,6 +389,7 @@ void App::cleanup()
     // The one place we wait for the GPU on shutdown: the cleanup calls below destroy
     // pipelines and other objects directly, which is only valid once nothing is in flight.
     attempt([this] { gfxDevice.waitIdle(); });
+    attempt([] { JobSystem::GetInstance().Shutdown(); });
 
     attempt([this] {
         if (layer) {