Полный код для платформы DirectX

Статья
06/13/2023

В этом разделе приведен полный пример кода, используемый в руководстве Начало работы с DirectX для Windows.

В этом коде предполагается, что вы используете microsoft Visual Studio 2013 и создали пустой проект Win32.

Эта статья содержит следующие разделы.

Расположение для скачивания

Этот пример недоступен для загрузки.

Технологии

Требование	Значение
Языки программирования	C++
Модели программирования	Windows/C++

Требования

Требование	Значение
Минимальная версия клиента	Windows 8.1
Минимальная версия сервера	Windows Server 2012 R2
Минимальный обязательный пакет SDK	Visual Studio 2013

Просмотреть код (C++)

Cube.cpp

//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved


//-----------------------------------------------------------------------------
// File: Cube.cpp
//
// Desktop app that renders a spinning, colorful cube.
//
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include "dxstdafx.h"
#include "resource.h"

#include <string>
#include <memory>

#include "DeviceResources.h"
#include "Renderer.h"
#include "MainClass.h"

//-----------------------------------------------------------------------------
// Main function: Creates window, calls initialization functions, and hosts
// the render loop.
//-----------------------------------------------------------------------------
INT WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
    HRESULT hr = S_OK;

    // Enable run-time memory check for debug builds.
#if defined(DEBUG) | defined(_DEBUG)
    _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
#endif

    // Begin initialization.

    // Instantiate the window manager class.
    std::shared_ptr<MainClass> winMain = std::shared_ptr<MainClass>(new MainClass());
    // Create a window.
    hr = winMain->CreateDesktopWindow();

    if (SUCCEEDED(hr))
    {
        // Instantiate the device manager class.
        std::shared_ptr<DeviceResources> deviceResources = std::shared_ptr<DeviceResources>(new DeviceResources());
        // Create device resources.
        deviceResources->CreateDeviceResources();

        // Instantiate the renderer.
        std::shared_ptr<Renderer> renderer = std::shared_ptr<Renderer>(new Renderer(deviceResources));
        renderer->CreateDeviceDependentResources();

        // We have a window, so initialize window size-dependent resources.
        deviceResources->CreateWindowResources(winMain->GetWindowHandle());
        renderer->CreateWindowSizeDependentResources();

        // Go full-screen.
        deviceResources->GoFullScreen();

        // Whoops! We resized the "window" when we went full-screen. Better
        // tell the renderer.
        renderer->CreateWindowSizeDependentResources();

        // Run the program.
        hr = winMain->Run(deviceResources, renderer);
    }

    // Cleanup is handled in destructors.
    return hr;
}

MainClass.h

//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved
#pragma once


//-----------------------------------------------------------------------------
// File: Cube.cpp
//
// Desktop app that renders a spinning, colorful cube.
//
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include "DeviceResources.h"
#include "Renderer.h"

//-----------------------------------------------------------------------------
// Class declarations
//-----------------------------------------------------------------------------

class MainClass
{
public:
    MainClass();
    ~MainClass();

    HRESULT CreateDesktopWindow();
    
    HWND GetWindowHandle() { return m_hWnd; };

    static LRESULT CALLBACK StaticWindowProc(
        HWND hWnd,
        UINT uMsg,
        WPARAM wParam,
        LPARAM lParam
        );

    HRESULT Run(
        std::shared_ptr<DeviceResources> deviceResources,
        std::shared_ptr<Renderer> renderer
        );

private:
    //-----------------------------------------------------------------------------
    // Desktop window resources
    //-----------------------------------------------------------------------------
    HMENU     m_hMenu;
    RECT      m_rc;
    HWND      m_hWnd;
};

// These are STATIC because this sample only creates one window.
// If your app can have multiple windows, MAKE SURE this is dealt with 
// differently.
static HINSTANCE m_hInstance;
static std::wstring m_windowClassName;

MainClass.cpp

//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved


//-----------------------------------------------------------------------------
// File: MainClass.cpp
//
// Creates and owns a desktop window resource.
//
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include "dxstdafx.h"
#include "resource.h"

#include <string>
#include <memory>

#include "MainClass.h"




//-----------------------------------------------------------------------------
// Constructor
//-----------------------------------------------------------------------------
MainClass::MainClass()
{
    m_windowClassName = L"Direct3DWindowClass";
    m_hInstance = NULL;
}

//-----------------------------------------------------------------------------
// Create a window for our Direct3D viewport.
//-----------------------------------------------------------------------------
HRESULT MainClass::CreateDesktopWindow()
{
    // Window resources are dealt with here.
    
    if(m_hInstance == NULL) 
        m_hInstance = (HINSTANCE)GetModuleHandle(NULL);

    HICON hIcon = NULL;
    WCHAR szExePath[MAX_PATH];
        GetModuleFileName(NULL, szExePath, MAX_PATH);
    
    // If the icon is NULL, then use the first one found in the exe
    if(hIcon == NULL)
        hIcon = ExtractIcon(m_hInstance, szExePath, 0); 

    // Register the windows class
    WNDCLASS wndClass;
    wndClass.style = CS_DBLCLKS;
    wndClass.lpfnWndProc = MainClass::StaticWindowProc;
    wndClass.cbClsExtra = 0;
    wndClass.cbWndExtra = 0;
    wndClass.hInstance = m_hInstance;
    wndClass.hIcon = hIcon;
    wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    wndClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
    wndClass.lpszMenuName = NULL;
    wndClass.lpszClassName = m_windowClassName.c_str();

    if(!RegisterClass(&wndClass))
    {
        DWORD dwError = GetLastError();
        if(dwError != ERROR_CLASS_ALREADY_EXISTS)
            return HRESULT_FROM_WIN32(dwError);
    }

    m_rc;
    int x = CW_USEDEFAULT;
    int y = CW_USEDEFAULT;

    // No menu in this example.
    m_hMenu = NULL;

    // This example uses a non-resizable 640 by 480 viewport for simplicity.
    int nDefaultWidth = 640;
    int nDefaultHeight = 480;
    SetRect(&m_rc, 0, 0, nDefaultWidth, nDefaultHeight);        
    AdjustWindowRect(
        &m_rc,
        WS_OVERLAPPEDWINDOW,
        (m_hMenu != NULL) ? true : false
        );

    // Create the window for our viewport.
    m_hWnd = CreateWindow(
        m_windowClassName.c_str(),
        L"Cube11",
        WS_OVERLAPPEDWINDOW,
        x, y,
        (m_rc.right-m_rc.left), (m_rc.bottom-m_rc.top),
        0,
        m_hMenu,
        m_hInstance,
        0
        );

    if(m_hWnd == NULL)
    {
        DWORD dwError = GetLastError();
        return HRESULT_FROM_WIN32(dwError);
    }

    return S_OK;
}

HRESULT MainClass::Run(
    std::shared_ptr<DeviceResources> deviceResources,
    std::shared_ptr<Renderer> renderer
    )
{
    HRESULT hr = S_OK;

    if (!IsWindowVisible(m_hWnd))
        ShowWindow(m_hWnd, SW_SHOW);

    // The render loop is controlled here.
    bool bGotMsg;
    MSG  msg;
    msg.message = WM_NULL;
    PeekMessage(&msg, NULL, 0U, 0U, PM_NOREMOVE);

    while (WM_QUIT != msg.message)
    {
        // Process window events.
        // Use PeekMessage() so we can use idle time to render the scene. 
        bGotMsg = (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE) != 0);

        if (bGotMsg)
        {
            // Translate and dispatch the message
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
        else
        {
            // Update the scene.
            renderer->Update();

            // Render frames during idle time (when no messages are waiting).
            renderer->Render();

            // Present the frame to the screen.
            deviceResources->Present();
        }
    }

    return hr;
}


//-----------------------------------------------------------------------------
// Destructor.
//-----------------------------------------------------------------------------
MainClass::~MainClass()
{

}

//-----------------------------------------------------------------------------
// Process windows messages. This looks for window close events, letting us
// exit out of the sample.
//-----------------------------------------------------------------------------
LRESULT CALLBACK MainClass::StaticWindowProc(
    HWND hWnd,
    UINT uMsg,
    WPARAM wParam,
    LPARAM lParam
    )
{
    switch(uMsg)
    {
        case WM_CLOSE:
        {
            HMENU hMenu;
            hMenu = GetMenu(hWnd);
            if (hMenu != NULL)
            {
                DestroyMenu(hMenu);
            }
            DestroyWindow(hWnd);
            UnregisterClass(
                m_windowClassName.c_str(),
                m_hInstance
                );
            return 0;
        }

        case WM_DESTROY:
            PostQuitMessage(0);
            break;
    }
    
    return DefWindowProc(hWnd, uMsg, wParam, lParam);
}

DeviceResources.h

//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved
#pragma once


//-----------------------------------------------------------------------------
// File: Cube.cpp
//
// Desktop app that renders a spinning, colorful cube.
//
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Class declarations
//-----------------------------------------------------------------------------

class DeviceResources
{
public:
    DeviceResources();
    ~DeviceResources();

    HRESULT CreateDeviceResources( HWND hWnd );
    HRESULT CreateDeviceResources( );
    HRESULT CreateWindowResources( HWND hWnd );

    HRESULT ConfigureBackBuffer();
    HRESULT ReleaseBackBuffer();
    HRESULT GoFullScreen();
    HRESULT GoWindowed();

    float GetAspectRatio();

    ID3D11Device*           GetDevice() { return m_pd3dDevice.Get(); };
    ID3D11DeviceContext*    GetDeviceContext() { return m_pd3dDeviceContext.Get(); };
    ID3D11RenderTargetView* GetRenderTarget() { return m_pRenderTarget.Get(); }
    ID3D11DepthStencilView* GetDepthStencil() { return m_pDepthStencilView.Get(); }
    
    void Present();

private:

    //-----------------------------------------------------------------------------
    // Direct3D device
    //-----------------------------------------------------------------------------
    Microsoft::WRL::ComPtr<ID3D11Device>        m_pd3dDevice;
    Microsoft::WRL::ComPtr<ID3D11DeviceContext> m_pd3dDeviceContext; // immediate context
    Microsoft::WRL::ComPtr<IDXGISwapChain>      m_pDXGISwapChain;


    //-----------------------------------------------------------------------------
    // DXGI swap chain device resources
    //-----------------------------------------------------------------------------
    Microsoft::WRL::ComPtr < ID3D11Texture2D>        m_pBackBuffer;
    Microsoft::WRL::ComPtr < ID3D11RenderTargetView> m_pRenderTarget;


    //-----------------------------------------------------------------------------
    // Direct3D device resources for the depth stencil
    //-----------------------------------------------------------------------------
    Microsoft::WRL::ComPtr<ID3D11Texture2D>         m_pDepthStencil;
    Microsoft::WRL::ComPtr<ID3D11DepthStencilView>  m_pDepthStencilView;


    //-----------------------------------------------------------------------------
    // Direct3D device metadata and device resource metadata
    //-----------------------------------------------------------------------------
    D3D_FEATURE_LEVEL       m_featureLevel;
    D3D11_TEXTURE2D_DESC    m_bbDesc;
    D3D11_VIEWPORT          m_viewport;
};

DeviceResources.cpp

//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved


//-----------------------------------------------------------------------------
// File: Cube.cpp
//
// Creates and owns a DirectX virtual device, along with accompanying DXGI swap
// chain and Direct3D device resources.
//
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include "dxstdafx.h"
#include "resource.h"

#include <string>
#include <memory>

#include "DeviceResources.h"


//-----------------------------------------------------------------------------
// Constructor
//-----------------------------------------------------------------------------
DeviceResources::DeviceResources()
{

};


//-----------------------------------------------------------------------------
//
// Method 1: Create device and swap chain at the same time.
//
// Benefit:  It's easy.
// Drawback: You have to create a new device, and therefore
//           reload all DirectX device resources, every time
//           you recreate the swap chain.
//
//-----------------------------------------------------------------------------
HRESULT DeviceResources::CreateDeviceResources(HWND hWnd)
{
    HRESULT hr = S_OK;

    D3D_FEATURE_LEVEL levels [] = {
        D3D_FEATURE_LEVEL_9_1,
        D3D_FEATURE_LEVEL_9_2,
        D3D_FEATURE_LEVEL_9_3,
        D3D_FEATURE_LEVEL_10_0,
        D3D_FEATURE_LEVEL_10_1,
        D3D_FEATURE_LEVEL_11_0,
        D3D_FEATURE_LEVEL_11_1
    };

    // This flag adds support for surfaces with a color-channel ordering different
    // from the API default. It is required for compatibility with Direct2D.
    UINT deviceFlags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;

#if defined(DEBUG) || defined(_DEBUG)
    deviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
#endif

    DXGI_SWAP_CHAIN_DESC desc;
    ZeroMemory(&desc, sizeof(DXGI_SWAP_CHAIN_DESC));
    desc.Windowed = TRUE;
    desc.BufferCount = 2;
    desc.BufferDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
    desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
    desc.SampleDesc.Count = 1;      //multisampling setting
    desc.SampleDesc.Quality = 0;    //vendor-specific flag
    desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
    desc.OutputWindow = hWnd;

    Microsoft::WRL::ComPtr<ID3D11Device> device;
    Microsoft::WRL::ComPtr<ID3D11DeviceContext> context;
    Microsoft::WRL::ComPtr<IDXGISwapChain> swapChain;

    hr = D3D11CreateDeviceAndSwapChain(
        nullptr,
        D3D_DRIVER_TYPE::D3D_DRIVER_TYPE_HARDWARE,
        nullptr,
        deviceFlags,
        levels,
        ARRAYSIZE(levels),
        D3D11_SDK_VERSION,
        &desc,
        swapChain.GetAddressOf(),
        device.GetAddressOf(),
        &m_featureLevel,
        context.GetAddressOf()
        );

    device.As(&m_pd3dDevice);
    context.As(&m_pd3dDeviceContext);
    swapChain.As(&m_pDXGISwapChain);

    // Configure the back buffer and viewport.
    hr = m_pDXGISwapChain->GetBuffer(
        0,
        __uuidof(ID3D11Texture2D),
        (void**) &m_pBackBuffer);

    m_pBackBuffer->GetDesc(&m_bbDesc);

    ZeroMemory(&m_viewport, sizeof(D3D11_VIEWPORT));
    m_viewport.Height = (float) m_bbDesc.Height;
    m_viewport.Width = (float) m_bbDesc.Width;
    m_viewport.MinDepth = 0;
    m_viewport.MaxDepth = 1;


    m_pd3dDeviceContext->RSSetViewports(
        1,
        &m_viewport
        );

    hr = m_pd3dDevice->CreateRenderTargetView(
        m_pBackBuffer.Get(),
        nullptr,
        m_pRenderTarget.GetAddressOf()
        );

    return hr;
}

//-----------------------------------------------------------------------------
//
// Method 2: Create the device and swap chain separately.
//
// Benefit:  You can recreate the swap chain on-the-fly.
// Drawback: Slight increase in your initial investment.
//
//-----------------------------------------------------------------------------
HRESULT DeviceResources::CreateDeviceResources()
{
    HRESULT hr = S_OK;

    D3D_FEATURE_LEVEL levels[] = {
        D3D_FEATURE_LEVEL_9_1,
        D3D_FEATURE_LEVEL_9_2,
        D3D_FEATURE_LEVEL_9_3,
        D3D_FEATURE_LEVEL_10_0,
        D3D_FEATURE_LEVEL_10_1,
        D3D_FEATURE_LEVEL_11_0,
        D3D_FEATURE_LEVEL_11_1
    };

    // This flag adds support for surfaces with a color-channel ordering different
    // from the API default. It is required for compatibility with Direct2D.
    UINT deviceFlags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;

#if defined(DEBUG) || defined(_DEBUG)
    deviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
#endif

    // Create the Direct3D 11 API device object and a corresponding context.
    Microsoft::WRL::ComPtr<ID3D11Device>        device;
    Microsoft::WRL::ComPtr<ID3D11DeviceContext> context;

    hr = D3D11CreateDevice(
        nullptr,                    // Specify nullptr to use the default adapter.
        D3D_DRIVER_TYPE_HARDWARE,   // Create a device using the hardware graphics driver.
        0,                          // Should be 0 unless the driver is D3D_DRIVER_TYPE_SOFTWARE.
        deviceFlags,                // Set debug and Direct2D compatibility flags.
        levels,                     // List of feature levels this app can support.
        ARRAYSIZE(levels),          // Size of the list above.
        D3D11_SDK_VERSION,          // Always set this to D3D11_SDK_VERSION for Windows Store apps.
        &device,                    // Returns the Direct3D device created.
        &m_featureLevel,            // Returns feature level of device created.
        &context                    // Returns the device immediate context.
        );

    if (FAILED(hr))
    {
        // Handle device interface creation failure if it occurs.
        // For example, reduce the feature level requirement, or fail over 
        // to WARP rendering.
    }

    // Store pointers to the Direct3D 11.1 API device and immediate context.
    device.As(&m_pd3dDevice);
    context.As(&m_pd3dDeviceContext);

    return hr;
}

//-----------------------------------------------------------------------------
// Method 2, continued. Creates the swap chain.
//-----------------------------------------------------------------------------
HRESULT DeviceResources::CreateWindowResources(HWND hWnd)
{
    HRESULT hr = S_OK;


    DXGI_SWAP_CHAIN_DESC desc;
    ZeroMemory(&desc, sizeof(DXGI_SWAP_CHAIN_DESC));
    desc.Windowed = TRUE; // Sets the initial state of full-screen mode.
    desc.BufferCount = 2;
    desc.BufferDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
    desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
    desc.SampleDesc.Count = 1;      //multisampling setting
    desc.SampleDesc.Quality = 0;    //vendor-specific flag
    desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
    desc.OutputWindow = hWnd;

    // Create the DXGI device object to use in other factories, such as Direct2D.
    Microsoft::WRL::ComPtr<IDXGIDevice3> dxgiDevice;
    m_pd3dDevice.As(&dxgiDevice);

    // Create swap chain.
    Microsoft::WRL::ComPtr<IDXGIAdapter> adapter;
    Microsoft::WRL::ComPtr<IDXGIFactory> factory;

    hr = dxgiDevice->GetAdapter(&adapter);

    if (SUCCEEDED(hr))
    {
        adapter->GetParent(IID_PPV_ARGS(&factory));

        hr = factory->CreateSwapChain(
            m_pd3dDevice.Get(),
            &desc,
            &m_pDXGISwapChain
            );
    }

    // Configure the back buffer, stencil buffer, and viewport.
    hr = ConfigureBackBuffer();

    return hr;
}

HRESULT DeviceResources::ConfigureBackBuffer()
{
    HRESULT hr = S_OK;

    hr = m_pDXGISwapChain->GetBuffer(
        0,
        __uuidof(ID3D11Texture2D),
        (void**) &m_pBackBuffer);

    hr = m_pd3dDevice->CreateRenderTargetView(
        m_pBackBuffer.Get(),
        nullptr,
        m_pRenderTarget.GetAddressOf()
        );

    m_pBackBuffer->GetDesc(&m_bbDesc);

    // Create a depth-stencil view for use with 3D rendering if needed.
    CD3D11_TEXTURE2D_DESC depthStencilDesc(
        DXGI_FORMAT_D24_UNORM_S8_UINT,
        static_cast<UINT> (m_bbDesc.Width),
        static_cast<UINT> (m_bbDesc.Height),
        1, // This depth stencil view has only one texture.
        1, // Use a single mipmap level.
        D3D11_BIND_DEPTH_STENCIL
        );

    m_pd3dDevice->CreateTexture2D(
        &depthStencilDesc,
        nullptr,
        &m_pDepthStencil
        );

    CD3D11_DEPTH_STENCIL_VIEW_DESC depthStencilViewDesc(D3D11_DSV_DIMENSION_TEXTURE2D);

    m_pd3dDevice->CreateDepthStencilView(
        m_pDepthStencil.Get(),
        &depthStencilViewDesc,
        &m_pDepthStencilView
        );


    ZeroMemory(&m_viewport, sizeof(D3D11_VIEWPORT));
    m_viewport.Height = (float) m_bbDesc.Height;
    m_viewport.Width = (float) m_bbDesc.Width;
    m_viewport.MinDepth = 0;
    m_viewport.MaxDepth = 1;
    
    m_pd3dDeviceContext->RSSetViewports(
        1,
        &m_viewport
        );

    return hr;
}

HRESULT DeviceResources::ReleaseBackBuffer()
{
    HRESULT hr = S_OK;

    // Release the render target view based on the back buffer:
    m_pRenderTarget.Reset();

    // Release the back buffer itself:
    m_pBackBuffer.Reset();

    // The depth stencil will need to be resized, so release it (and view):
    m_pDepthStencilView.Reset();
    m_pDepthStencil.Reset();

    // After releasing references to these resources, we need to call Flush() to 
    // ensure that Direct3D also releases any references it might still have to
    // the same resources - such as pipeline bindings.
    m_pd3dDeviceContext->Flush();

    return hr;
}

HRESULT DeviceResources::GoFullScreen()
{
    HRESULT hr = S_OK;

    hr = m_pDXGISwapChain->SetFullscreenState(TRUE, NULL);

    // Swap chains created with the DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL flag need to
    // call ResizeBuffers in order to realize a full-screen mode switch. Otherwise, 
    // your next call to Present will fail.

    // Before calling ResizeBuffers, you have to release all references to the back 
    // buffer device resource.
    ReleaseBackBuffer();

    // Now we can call ResizeBuffers.
    hr = m_pDXGISwapChain->ResizeBuffers(
        0,                   // Number of buffers. Set this to 0 to preserve the existing setting.
        0, 0,                // Width and height of the swap chain. Set to 0 to match the screen resolution.
        DXGI_FORMAT_UNKNOWN, // This tells DXGI to retain the current back buffer format.
        0
        );

    // Then we can recreate the back buffer, depth buffer, and so on.
    hr = ConfigureBackBuffer();

    return hr;
}

HRESULT DeviceResources::GoWindowed()
{
    HRESULT hr = S_OK;

    hr = m_pDXGISwapChain->SetFullscreenState(FALSE, NULL);

    // Swap chains created with the DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL flag need to
    // call ResizeBuffers in order to realize a change to windowed mode. Otherwise, 
    // your next call to Present will fail.

    // Before calling ResizeBuffers, you have to release all references to the back 
    // buffer device resource.
    ReleaseBackBuffer();

    // Now we can call ResizeBuffers.
    hr = m_pDXGISwapChain->ResizeBuffers(
        0,                   // Number of buffers. Set this to 0 to preserve the existing setting.
        0, 0,                // Width and height of the swap chain. MUST be set to a non-zero value. For example, match the window size.
        DXGI_FORMAT_UNKNOWN, // This tells DXGI to retain the current back buffer format.
        0
        );

    // Then we can recreate the back buffer, depth buffer, and so on.
    hr = ConfigureBackBuffer();

    return hr;
}

//-----------------------------------------------------------------------------
// Returns the aspect ratio of the back buffer.
//-----------------------------------------------------------------------------
float DeviceResources::GetAspectRatio()
{
    return static_cast<float>(m_bbDesc.Width) / static_cast<float>(m_bbDesc.Height);
}

//-----------------------------------------------------------------------------
// Present frame:
// Show the frame on the primary surface.
//-----------------------------------------------------------------------------
void DeviceResources::Present()
{
    m_pDXGISwapChain->Present(1, 0);
}


//-----------------------------------------------------------------------------
// Destructor.
//-----------------------------------------------------------------------------
DeviceResources::~DeviceResources()
{

}

Renderer.h

//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved
#pragma once


//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include "DeviceResources.h"

//-----------------------------------------------------------------------------
// Class declarations
//-----------------------------------------------------------------------------

class Renderer
{
public:
    Renderer(std::shared_ptr<DeviceResources> deviceResources);
    ~Renderer();

    void CreateDeviceDependentResources();
    void CreateWindowSizeDependentResources();
    void Update();
    void Render();

private:
    HRESULT CreateShaders();
    HRESULT CreateCube();
    void    CreateViewAndPerspective();

    //-----------------------------------------------------------------------------
    // Pointer to device resource manager
    //-----------------------------------------------------------------------------
    std::shared_ptr<DeviceResources> m_deviceResources;

    //-----------------------------------------------------------------------------
    // Variables for rendering the cube
    //-----------------------------------------------------------------------------
    typedef struct _constantBufferStruct {
        DirectX::XMFLOAT4X4 world;
        DirectX::XMFLOAT4X4 view;
        DirectX::XMFLOAT4X4 projection;
    } ConstantBufferStruct;

    // Assert that the constant buffer remains 16-byte aligned.
    static_assert((sizeof(ConstantBufferStruct) % 16) == 0, "Constant Buffer size must be 16-byte aligned");

    //-----------------------------------------------------------------------------
    // Per-vertex data
    //-----------------------------------------------------------------------------
    typedef struct _vertexPositionColor
    {
        DirectX::XMFLOAT3 pos;
        DirectX::XMFLOAT3 color;
    } VertexPositionColor;

    //-----------------------------------------------------------------------------
    // Per-vertex data (extended)
    //-----------------------------------------------------------------------------
    typedef struct _vertexPositionColorTangent
    {
        DirectX::XMFLOAT3 pos;
        DirectX::XMFLOAT3 normal;
        DirectX::XMFLOAT3 tangent;
    } VertexPositionColorTangent;

    ConstantBufferStruct m_constantBufferData;
    unsigned int  m_indexCount;
    unsigned int  m_frameCount;

    //-----------------------------------------------------------------------------
    // Direct3D device resources
    //-----------------------------------------------------------------------------
    //ID3DXEffect* m_pEffect;
    Microsoft::WRL::ComPtr<ID3D11Buffer>            m_pVertexBuffer;
    Microsoft::WRL::ComPtr<ID3D11Buffer>            m_pIndexBuffer;
    Microsoft::WRL::ComPtr<ID3D11VertexShader>      m_pVertexShader;
    Microsoft::WRL::ComPtr<ID3D11InputLayout>       m_pInputLayout;
    Microsoft::WRL::ComPtr<ID3D11InputLayout>       m_pInputLayoutExtended;
    Microsoft::WRL::ComPtr<ID3D11PixelShader>       m_pPixelShader;
    Microsoft::WRL::ComPtr<ID3D11Buffer>            m_pConstantBuffer;
};

Renderer.cpp

//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved


//-----------------------------------------------------------------------------
// File: Cube.cpp
//
// Renders a spinning, colorful cube.
//
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include "dxstdafx.h"
#include "resource.h"

#include <string>
#include <memory>
#include <ppltasks.h>

#include "Renderer.h"


//-----------------------------------------------------------------------------
// Constructor
//-----------------------------------------------------------------------------
Renderer::Renderer(std::shared_ptr<DeviceResources> deviceResources)
    :
    m_frameCount(0),
    m_deviceResources(deviceResources)
{
    m_frameCount = 0; // init frame count
}

//-----------------------------------------------------------------------------
// Create Direct3D shader resources by loading the .cso files.
//-----------------------------------------------------------------------------
HRESULT Renderer::CreateShaders()
{
    HRESULT hr = S_OK;

    // Use the Direct3D device to load resources into graphics memory.
    ID3D11Device* device = m_deviceResources->GetDevice();
    
    // You'll need to use a file loader to load the shader bytecode. In this
    // example, we just use the standard library.
    FILE* vShader, * pShader;
    BYTE* bytes;

    size_t destSize = 4096;
    size_t bytesRead = 0;
    bytes = new BYTE[destSize];

    fopen_s(&vShader, "CubeVertexShader.cso", "rb");
    bytesRead = fread_s(bytes, destSize, 1, 4096, vShader);
    hr = device->CreateVertexShader(
        bytes,
        bytesRead,
        nullptr,
        &m_pVertexShader
        );

    D3D11_INPUT_ELEMENT_DESC iaDesc [] =
    {
        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT,
        0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },

        { "COLOR", 0, DXGI_FORMAT_R32G32B32_FLOAT,
        0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 },
    };

    hr = device->CreateInputLayout(
        iaDesc,
        ARRAYSIZE(iaDesc),
        bytes,
        bytesRead,
        &m_pInputLayout
        );

    delete bytes;


    bytes = new BYTE[destSize];
    bytesRead = 0;
    fopen_s(&pShader, "CubePixelShader.cso", "rb");
    bytesRead = fread_s(bytes, destSize, 1, 4096, pShader);
    hr = device->CreatePixelShader(
        bytes,
        bytesRead,
        nullptr,
        m_pPixelShader.GetAddressOf()
        );

    delete bytes;
    
    CD3D11_BUFFER_DESC cbDesc(
        sizeof(ConstantBufferStruct),
        D3D11_BIND_CONSTANT_BUFFER
        );

    hr = device->CreateBuffer(
        &cbDesc,
        nullptr,
        m_pConstantBuffer.GetAddressOf()
        );

    fclose(vShader);
    fclose(pShader);


    // Load the extended shaders with lighting calculations.
    /*
    bytes = new BYTE[destSize];
    bytesRead = 0;
    fopen_s(&vShader, "CubeVertexShaderLighting.cso", "rb");
    bytesRead = fread_s(bytes, destSize, 1, 4096, vShader);
    hr = device->CreateVertexShader(
        bytes,
        bytesRead,
        nullptr,
        &m_pVertexShader
        );

    D3D11_INPUT_ELEMENT_DESC iaDescExtended[] =
    {
        { "POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT,
        0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },

        { "NORMAL", 0, DXGI_FORMAT_R32G32B32_FLOAT,
        0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 },

        { "TANGENT", 0, DXGI_FORMAT_R32G32B32_FLOAT,
        0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0 },
    };

    hr = device->CreateInputLayout(
        iaDesc,
        ARRAYSIZE(iaDesc),
        bytes,
        bytesRead,
        &m_pInputLayoutExtended
        );

    delete bytes;


    bytes = new BYTE[destSize];
    bytesRead = 0;
    fopen_s(&pShader, "CubePixelShaderPhongLighting.cso", "rb");
    bytesRead = fread_s(bytes, destSize, 1, 4096, pShader);
    hr = device->CreatePixelShader(
        bytes,
        bytesRead,
        nullptr,
        m_pPixelShader.GetAddressOf()
        );

    delete bytes;

    fclose(vShader);
    fclose(pShader);


    bytes = new BYTE[destSize];
    bytesRead = 0;
    fopen_s(&pShader, "CubePixelShaderTexelLighting.cso", "rb");
    bytesRead = fread_s(bytes, destSize, 1, 4096, pShader);
    hr = device->CreatePixelShader(
    bytes,
    bytesRead,
    nullptr,
    m_pPixelShader.GetAddressOf()
    );

    delete bytes;

    fclose(pShader);
    */

    return hr;
}

//-----------------------------------------------------------------------------
// Create the cube:
// Creates the vertex buffer and index buffer.
//-----------------------------------------------------------------------------
HRESULT Renderer::CreateCube()
{
    HRESULT hr = S_OK;

    // Use the Direct3D device to load resources into graphics memory.
    ID3D11Device* device = m_deviceResources->GetDevice();

    // Create cube geometry.
    VertexPositionColor CubeVertices[] =
    {
        {DirectX::XMFLOAT3(-0.5f,-0.5f,-0.5f), DirectX::XMFLOAT3(  0,   0,   0),},
        {DirectX::XMFLOAT3(-0.5f,-0.5f, 0.5f), DirectX::XMFLOAT3(  0,   0,   1),},
        {DirectX::XMFLOAT3(-0.5f, 0.5f,-0.5f), DirectX::XMFLOAT3(  0,   1,   0),},
        {DirectX::XMFLOAT3(-0.5f, 0.5f, 0.5f), DirectX::XMFLOAT3(  0,   1,   1),},

        {DirectX::XMFLOAT3( 0.5f,-0.5f,-0.5f), DirectX::XMFLOAT3(  1,   0,   0),},
        {DirectX::XMFLOAT3( 0.5f,-0.5f, 0.5f), DirectX::XMFLOAT3(  1,   0,   1),},
        {DirectX::XMFLOAT3( 0.5f, 0.5f,-0.5f), DirectX::XMFLOAT3(  1,   1,   0),},
        {DirectX::XMFLOAT3( 0.5f, 0.5f, 0.5f), DirectX::XMFLOAT3(  1,   1,   1),},
    };
    
    // Create vertex buffer:
    
    CD3D11_BUFFER_DESC vDesc(
        sizeof(CubeVertices),
        D3D11_BIND_VERTEX_BUFFER
        );

    D3D11_SUBRESOURCE_DATA vData;
    ZeroMemory(&vData, sizeof(D3D11_SUBRESOURCE_DATA));
    vData.pSysMem = CubeVertices;
    vData.SysMemPitch = 0;
    vData.SysMemSlicePitch = 0;

    hr = device->CreateBuffer(
        &vDesc,
        &vData,
        &m_pVertexBuffer
        );

    // Create index buffer:
    unsigned short CubeIndices [] = 
    {
        0,2,1, // -x
        1,2,3,

        4,5,6, // +x
        5,7,6,

        0,1,5, // -y
        0,5,4,

        2,6,7, // +y
        2,7,3,

        0,4,6, // -z
        0,6,2,

        1,3,7, // +z
        1,7,5,
    };

    m_indexCount = ARRAYSIZE(CubeIndices);

    CD3D11_BUFFER_DESC iDesc(
        sizeof(CubeIndices),
        D3D11_BIND_INDEX_BUFFER
        );

    D3D11_SUBRESOURCE_DATA iData;
    ZeroMemory(&iData, sizeof(D3D11_SUBRESOURCE_DATA));
    iData.pSysMem = CubeIndices;
    iData.SysMemPitch = 0;
    iData.SysMemSlicePitch = 0;
    
    hr = device->CreateBuffer(
        &iDesc,
        &iData,
        &m_pIndexBuffer
        );

    return hr;
}

//-----------------------------------------------------------------------------
// Create the view matrix and create the perspective matrix.
//-----------------------------------------------------------------------------
void Renderer::CreateViewAndPerspective()
{
    // Use DirectXMath to create view and perspective matrices.

    DirectX::XMVECTOR eye = DirectX::XMVectorSet(0.0f, 0.7f, 1.5f, 0.f);
    DirectX::XMVECTOR at  = DirectX::XMVectorSet(0.0f,-0.1f, 0.0f, 0.f);
    DirectX::XMVECTOR up  = DirectX::XMVectorSet(0.0f, 1.0f, 0.0f, 0.f);

    DirectX::XMStoreFloat4x4(
        &m_constantBufferData.view,
        DirectX::XMMatrixTranspose(
            DirectX::XMMatrixLookAtRH(
                eye,
                at,
                up
                )
            )
        );

    float aspectRatioX = m_deviceResources->GetAspectRatio();
    float aspectRatioY = aspectRatioX < (16.0f / 9.0f) ? aspectRatioX / (16.0f / 9.0f) : 1.0f;

    DirectX::XMStoreFloat4x4(
        &m_constantBufferData.projection,
        DirectX::XMMatrixTranspose(
            DirectX::XMMatrixPerspectiveFovRH(
                2.0f * std::atan(std::tan(DirectX::XMConvertToRadians(70) * 0.5f) / aspectRatioY),
                aspectRatioX,
                0.01f,
                100.0f
                )
            )
        );
}

//-----------------------------------------------------------------------------
// Create device-dependent resources for rendering.
//-----------------------------------------------------------------------------
void Renderer::CreateDeviceDependentResources()
{
    // Compile shaders using the Effects library.
    auto CreateShadersTask = Concurrency::create_task(
            [this]( )
            {
                CreateShaders();
            }
        );

    // Load the geometry for the spinning cube.
    auto CreateCubeTask = CreateShadersTask.then(
            [this]()
            {
                CreateCube();
            }
        );
}

void Renderer::CreateWindowSizeDependentResources()
{
    // Create the view matrix and the perspective matrix.
    CreateViewAndPerspective();
}


//-----------------------------------------------------------------------------
// Update the scene.
//-----------------------------------------------------------------------------
void Renderer::Update()
{
    // Rotate the cube 1 degree per frame.
    DirectX::XMStoreFloat4x4(
        &m_constantBufferData.world,
        DirectX::XMMatrixTranspose(
            DirectX::XMMatrixRotationY(
                DirectX::XMConvertToRadians(
                    (float) m_frameCount++
                    )
                )
            )
        );

    if (m_frameCount == MAXUINT)  m_frameCount = 0;
}

//-----------------------------------------------------------------------------
// Render the cube.
//-----------------------------------------------------------------------------
void Renderer::Render()
{
    // Use the Direct3D device context to draw.
    ID3D11DeviceContext* context = m_deviceResources->GetDeviceContext();

    ID3D11RenderTargetView* renderTarget = m_deviceResources->GetRenderTarget();
    ID3D11DepthStencilView* depthStencil = m_deviceResources->GetDepthStencil();

    context->UpdateSubresource(
        m_pConstantBuffer.Get(),
        0,
        nullptr,
        &m_constantBufferData,
        0,
        0
        );

    // Clear the render target and the z-buffer.
    const float teal [] = { 0.098f, 0.439f, 0.439f, 1.000f };
    context->ClearRenderTargetView(
        renderTarget,
        teal
        );
    context->ClearDepthStencilView(
        depthStencil,
        D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL,
        1.0f,
        0);

    // Set the render target.
    context->OMSetRenderTargets(
        1,
        &renderTarget,
        depthStencil
        );

    // Set up the IA stage by setting the input topology and layout.
    UINT stride = sizeof(VertexPositionColor);
    UINT offset = 0;

    context->IASetVertexBuffers(
        0,
        1,
        m_pVertexBuffer.GetAddressOf(),
        &stride,
        &offset
        );

    context->IASetIndexBuffer(
        m_pIndexBuffer.Get(),
        DXGI_FORMAT_R16_UINT,
        0
        );
    
    context->IASetPrimitiveTopology(
        D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST
        );

    context->IASetInputLayout(m_pInputLayout.Get());

    // Set up the vertex shader stage.
    context->VSSetShader(
        m_pVertexShader.Get(),
        nullptr,
        0
        );

    context->VSSetConstantBuffers(
        0,
        1,
        m_pConstantBuffer.GetAddressOf()
        );

    // Set up the pixel shader stage.
    context->PSSetShader(
        m_pPixelShader.Get(),
        nullptr,
        0
        );

    // Calling Draw tells Direct3D to start sending commands to the graphics device.
    context->DrawIndexed(
        m_indexCount,
        0,
        0
        );
}

//-----------------------------------------------------------------------------
// Clean up cube resources when the Direct3D device is lost or destroyed.
//-----------------------------------------------------------------------------
Renderer::~Renderer()
{
    // ComPtr will clean up references for us. But be careful to release
    // references to anything you don't need whenever you call Flush or Trim.
    // As always, clean up your system (CPU) memory resources before exit.
}

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