version 0.60 (#367)

- namespace refactor (example: wiGraphics:: -> wi::graphics)
  - provided namespace compatibility macro for old user code: WICKEDENGINE_BACKWARDS_COMPATIBILITY_0_59
- resource manager will return `Resource` instead of `shared_ptr<Resource>` objects
- MAD shader optimizations
- implemented alpha to coverage with alpha tested materials when MSAA is enabled
- alpha testing fix with transparent shadow maps
- TLAS and scene buffers will be recreated less frequently when things get added/removed from the scene

WickedEngine/wiLoadingScreen.cpp

@@ -0,0 +1,60 @@
+#include "wiLoadingScreen.h"
+#include "wiApplication.h"
+
+#include <thread>
+
+namespace wi
+{
+
+	bool LoadingScreen::isActive()
+	{
+		return wi::jobsystem::IsBusy(ctx);
+	}
+
+	void LoadingScreen::addLoadingFunction(std::function<void(wi::jobsystem::JobArgs)> loadingFunction)
+	{
+		if (loadingFunction != nullptr)
+		{
+			tasks.push_back(loadingFunction);
+		}
+	}
+
+	void LoadingScreen::addLoadingComponent(RenderPath* component, Application* main, float fadeSeconds, wi::Color fadeColor)
+	{
+		addLoadingFunction([=](wi::jobsystem::JobArgs args) {
+			component->Load();
+			});
+		onFinished([=] {
+			main->ActivatePath(component, fadeSeconds, fadeColor);
+			});
+	}
+
+	void LoadingScreen::onFinished(std::function<void()> finishFunction)
+	{
+		if (finishFunction != nullptr)
+			finish = finishFunction;
+	}
+
+	void LoadingScreen::Start()
+	{
+		for (auto& x : tasks)
+		{
+			wi::jobsystem::Execute(ctx, x);
+		}
+		std::thread([this]() {
+			wi::jobsystem::Wait(ctx);
+			finish();
+			}).detach();
+
+			RenderPath2D::Start();
+	}
+
+	void LoadingScreen::Stop()
+	{
+		tasks.clear();
+		finish = nullptr;
+
+		RenderPath2D::Stop();
+	}
+
+}