Minimal Ogre/WinRT Application (not working)

OgreTest::OgreTest() :
  ogreRoot(new Ogre::Root()) {

  // WinRt apps only have one render system they can pick from...
  pickFirstAvailableRenderSystem();

  this->ogreRoot->initialise(false);
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::Initialize(CoreApplicationView ^applicationView) {
  // ...omitted WinRT suspend/resume event subscribing stuff...
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::SetWindow(CoreWindow ^window) {
  this->window = window;

  setupOgreRenderWindow();
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::Load(Platform::String ^entryPoint) {
  this->ogreSceneManager = this->ogreRoot->createSceneManager(Ogre::ST_GENERIC);

  this->ogreCamera = this->ogreSceneManager->createCamera("DefaultCamera");
  this->ogreCamera->setPosition(Ogre::Vector3(0.0f, 100.0f, 250.0f));
  this->ogreCamera->lookAt(Ogre::Vector3(0.0f, 50.0f, 0.0f));

  this->ogreRenderWindow->removeAllViewports();
  Ogre::Viewport *viewport = this->ogreRenderWindow->addViewport(this->ogreCamera);
  viewport->setBackgroundColour(
    Ogre::ColourValue(20.0f / 255.0f, 106.0f / 255.0f, 181.0f / 255.0f)
  );

  // This thing generates shader at runtime. It's currently not clear whether
  // D3DCompile() will be supported on ARM (in the Windows 8 Consumer Preview,
  // the ARM DLL is missing), so it might be wise to not rely on it.
  initializeRuntimeShaderSystem();

  // Only load what's necessary here. Metro applications must not become
  // unresponsive for more than 50 ms at a time, so maybe load the resources necessary
  // to display a loading screen here and do the rest asynchronously!
  loadResources();

  // Create the example scene
  createScene();
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::Run() {
  BasicTimer ^timer = ref new BasicTimer();

  // App main loop
  while(!this->windowClosed && !this->ogreRoot->endRenderingQueued()) {
    timer->Update();
    this->ogreRoot->renderOneFrame(timer->Delta);

    // Good old message pump :)
    CoreWindow::GetForCurrentThread()->Dispatcher->ProcessEvents(
      CoreProcessEventsOption::ProcessAllIfPresent
    );
  }
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::Uninitialize() {
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::pickFirstAvailableRenderSystem() {
  assert(this->ogreRoot != nullptr);

  const Ogre::RenderSystemList &renderSystems = this->ogreRoot->getAvailableRenderers();
  for(
    Ogre::RenderSystemList::const_iterator iterator = renderSystems.begin();
    iterator != renderSystems.end();
    ++iterator
  ) {
    this->ogreRoot->setRenderSystem(*iterator);
    return;
  }

  throw std::runtime_error("No render systems registered");
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::setupOgreRenderWindow() {
  Windows::Foundation::Rect bounds = this->window->Bounds;

  // You cannot create windows in metro (not even a message box), instead, Windows
  // hands you a "window" - a full-screen view, actually - that you can use. Thus,
  // we don't proactively create a render window but just set up our render window
  // into the one provided by Windows.

  Ogre::NameValuePairList parameters;
  parameters["externalWindowHandle"] = Ogre::StringConverter::toString(
    (unsigned long)reinterpret_cast<void *>(this->window)
  );

  this->ogreRenderWindow = this->ogreRoot->createRenderWindow(
    "OgreTest Rendering Window",
    static_cast<unsigned int>(bounds.Width), static_cast<unsigned int>(bounds.Height),
    false, // fullscreen
    &parameters
  );
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::initializeRuntimeShaderSystem() {
  if(!Ogre::RTShader::ShaderGenerator::initialize()) {
    throw std::runtime_error("Could not initialize runtime shader system");
  }

  this->ogreShaderGenerator = Ogre::RTShader::ShaderGenerator::getSingletonPtr();

  Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
    "Resources/RTShaderLib", "FileSystem"
  );
  this->ogreShaderGenerator->addSceneManager(this->ogreSceneManager);

  // TODO: Enabling this on WinRT doesn't work yet. It fails to write the test file.
  //this->ogreShaderGenerator->setShaderCachePath("Resources/RTShaderCache");
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::loadResources() {
  Ogre::ConfigFile resourcesCfg;
  resourcesCfg.load("resources.cfg");

  // Go through all sections & settings in the file
  Ogre::ConfigFile::SectionIterator sectionIterator = resourcesCfg.getSectionIterator();
  while (sectionIterator.hasMoreElements()) {
    Ogre::String sectionName = sectionIterator.peekNextKey();
    Ogre::ConfigFile::SettingsMultiMap *settings = sectionIterator.getNext();

    for(
      Ogre::ConfigFile::SettingsMultiMap::iterator iterator = settings->begin();
      iterator != settings->end();
      ++iterator
    ) {
      Ogre::String typeName = iterator->first;
      Ogre::String archiveName = iterator->second;

      bool recursive = true;
      Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
        archiveName, typeName, sectionName, recursive
      );
    }
  }

  Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
}

// --------------------------------------------------------------------------------------------- //

void OgreTest::createScene() {

  // TODO: If you attemp to render the example mesh, the renderer will explode complaining:
  //
  //   "Attempted to render to a D3D11 device without both vertex and fragment shaders there
  //   is no fixed pipeline in d3d11 - use the RTSS or write custom shaders."
  //
  // To see the actual error message, hit Ctrl+D,E to bring up the exception menu
  // and tick the checkboxes in the "Thrown" column for C++ exceptions.

  this->ogreSceneManager->setAmbientLight(Ogre::ColourValue::White);
  //Ogre::Entity *entity = this->ogreSceneManager->createEntity("Head", "ogrehead.mesh");
  //Ogre::SceneNode *node = this->ogreSceneManager->getRootSceneNode()->createChildSceneNode("HeadNode");
  //node->attachObject(entity);

}