Forums | NoesisGUI

while (!glfwWindowShouldClose(mWindow))
{
	// New Frame Stuff
	...
	// ~New Frame Stuff

	PROFILE_CUSTOM("Main Loop");
	{
		PROFILE_CUSTOM("GLFW");
		// Clear the colorbuffer
		glBindFramebuffer(GL_FRAMEBUFFER, 0);
		glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

		// Events
		glfwPollEvents();
	}

	// Game update
	...
	// ~Game update

	// UI Update
	if (mInGameMode)
	{
		// This is the part where UpdateRenderTree + RenderOffscreen are called.
		PROFILE_CUSTOM("UIManager Update");
		UIManager::GetInstance().Update();
	}

	// Render update
	// Also resets the OpenGL state as it was modified by Noesis GUI
	...
	// ~Render update

	// UI Render
	if (mInGameMode)
	{
		// This is the part where Render is called.
		PROFILE_CUSTOM("UIManager Render");
		UIManager::GetInstance().Render();
	}

	//End of loop, swap buffer
	glBindFramebuffer(GL_FRAMEBUFFER, 0);
	if (mInGameMode)
	{
		glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	}
	glfwSwapBuffers(mWindow);
}

void UIManager::Initialize()
{
	GUI::Init(
		[](const char* file, uint32_t line, const char* message, bool fatal) 
		{
			Logger::Log(fatal ? Logger::ELogSeverity::FatalError : Logger::ELogSeverity::Error, "Noesis UI", message);
		}, 
		[](const char* filename, uint32_t line, uint32_t level, const char* channel, const char* message) 
		{
			Logger::Log(Logger::ELogSeverity::Log, "Noesis UI", message);
		}, 
		nullptr
	);

	GUI::SetXamlProvider(MakePtr<UI_XamlProvider>());
	//GUI::SetTextureProvider(MakePtr<>());
	//GUI::SetFontProvider(MakePtr<>());

	NoesisApp::Launcher::RegisterAppComponents();

	NsRegisterComponent<NoesisUI::App>();
	NsRegisterComponent<NoesisUI::MainWindow>();

	int width, height;
	glfwGetFramebufferSize(OpenGLEngine::GetInstance().GetWindow(), &width, &height);

	Noesis::Ptr<Noesis::RenderDevice> device = NoesisApp::GLFactory::CreateDevice();
	device->SetGlyphCacheWidth(1024);
	device->SetGlyphCacheHeight(1024);
	device->SetGlyphCacheMeshThreshold(48);

	Ptr<FrameworkElement> xaml = Noesis::GUI::LoadXaml<FrameworkElement>("MainWindow");
	view = Noesis::GUI::CreateView(xaml);
	view->SetIsPPAAEnabled(true);
	view->GetRenderer()->Init(device);
	view->SetSize(width, height);

	RestoreValues();
}

void UIManager::Update()
{
	double time = glfwGetTime();
	view->Update(time);

	// Offscreen rendering phase populates textures needed by the on-screen rendering
	view->GetRenderer()->UpdateRenderTree();
	view->GetRenderer()->RenderOffscreen();

	// If you are going to render here with your own engine you need to restore the GPU state
	// because noesis changes it. The framebuffer and viewport are restored here
	glBindFramebuffer(GL_FRAMEBUFFER, 0);
	int width, height;
	glfwGetFramebufferSize(OpenGLEngine::GetInstance().GetWindow(), &width, &height);
	glViewport(0, 0, width, height);

	glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
	glClearStencil(0);
	glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);

	RestoreValues();
}

void UIManager::Render()
{
	view->GetRenderer()->Render();

	RestoreValues();
}

void UIManager::RestoreValues()
{
	glEnable(GL_CULL_FACE);
	glEnable(GL_DEPTH_TEST);
	glDepthMask(GL_TRUE);
	glDisable(GL_BLEND);
	glDisable(GL_STENCIL_TEST);
	glDisable(GL_SCISSOR_TEST);
	glStencilMask(0);
}

LOOP START
{
  // Game and input update

  _noesisView->Update(timeInSeconds);

  _noesisRenderer->UpdateRenderTree();
  if (_noesisRenderer->NeedsOffscreen())
    _noesisRenderer->RenderOffscreen();

  glBindFramebuffer(GL_FRAMEBUFFER, 0);
  glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  // Reset GL state to initialize anything that Noesis could have changed during RenderOffscreen

  // Render your geometry

  _noesisRenderer->Render();

  glfwSwapBuffers(mWindow);

} LOOP END

<Grid
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Rectangle Width="200" Height="100" Fill="Red"/>
</Grid>

<Window x:Class="NoesisUI.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:NoesisUI"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Button Content="Test Button" HorizontalAlignment="Left" Margin="347.941,200.236,0,0" VerticalAlignment="Top" Width="75"/>
    </Grid>
</Window>

    <Grid>
	  <Button Width="60" Height="40" Content="OK">
		<Button.ToolTip>
		  Clicking this will submit your request
		</Button.ToolTip>
	  </Button>
	</Grid>

    <Grid>
	  <Button Width="60" Height="40" Content="OK OK OK OK OK OK">
		<Button.ToolTip>
		  Clicking this will submit your request
		</Button.ToolTip>
	  </Button>
	</Grid>

GLint stencil_bits;
glGetFramebufferAttachmentParameteriv(GL_DRAW_FRAMEBUFFER, GL_STENCIL, GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE, &stencil_bits);