DirectX11笔记(三)--Direct3D初始化代码

来源：互联网发布：dota改键位软件编辑：程序博客网时间：2024/05/22 05:05

这里先提出InitDevice方法, 讲解请参考前一篇文章: DirectX11笔记(三)–Direct3D初始化2

HRESULT InitDevice( ){    // 窗口信息    RECT rc;    GetClientRect( g_hWnd, &rc );    UINT width = rc.right - rc.left;    UINT height = rc.bottom - rc.top;    // 创建交换链描述    DXGI_SWAP_CHAIN_DESC sd;    sd.BufferDesc.Width = width;    sd.BufferDesc.Height = height;    sd.BufferDesc.RefreshRate.Numerator = 60;    sd.BufferDesc.RefreshRate.Denominator = 1;    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;    sd.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;    sd.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;    sd.BufferCount = 1;    sd.OutputWindow = g_hWnd;    sd.Windowed = true;    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;    sd.Flags = 0;    sd.SampleDesc.Count = 1; // 不使用 MSAA    sd.SampleDesc.Quality = 0;    // 调试模式    UINT createDeviceFlags = 0;    #if defined( DEBUG ) || defined( _DEBUG )    createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;    #endif    // 特征等级    D3D_FEATURE_LEVEL featureLevels[] =    {        D3D_FEATURE_LEVEL_11_0,        D3D_FEATURE_LEVEL_10_1,        D3D_FEATURE_LEVEL_10_0,    };    UINT numFeatureLevels = ARRAYSIZE( featureLevels );    // 创建 ID3D11Device, ID3D11DeviceContext, IDXGISwapChain    HRESULT hr = D3D11CreateDeviceAndSwapChain(        NULL,        g_driverType,        NULL,        createDeviceFlags,        featureLevels, numFeatureLevels,        D3D11_SDK_VERSION,        &sd,        &g_pSwapChain,        &g_pd3dDevice,        &g_featureLevel,        &g_pImmediateContext );    if( FAILED(hr) )    {        MessageBox( 0, L"D3D11CreateDeviceAndSwapChain Failed.", 0, 0 );        return false;    }    if( g_featureLevel != D3D_FEATURE_LEVEL_11_0 )    {        MessageBox( 0, L"Direct3D Feature Level 11 unsupported.", 0, 0 );        return false;    }    // 创建 render target view    ID3D11Texture2D* pBackBuffer = NULL;    hr = g_pSwapChain->GetBuffer( 0, __uuidof( ID3D11Texture2D ), ( LPVOID* )&pBackBuffer );    if( FAILED( hr ) )        return hr;    hr = g_pd3dDevice->CreateRenderTargetView( pBackBuffer, NULL, &g_pRenderTargetView );    pBackBuffer->Release();    if( FAILED( hr ) )        return hr;    // 创建深度模板缓冲    D3D11_TEXTURE2D_DESC descDepth;    ZeroMemory(&descDepth, sizeof(descDepth));    descDepth.Width = width;    descDepth.Height = height;    descDepth.MipLevels = 1;    descDepth.ArraySize = 1;    descDepth.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;    descDepth.SampleDesc.Count = 1;    descDepth.SampleDesc.Quality = 0;    descDepth.Usage = D3D11_USAGE_DEFAULT;    descDepth.BindFlags = D3D11_BIND_DEPTH_STENCIL;    descDepth.CPUAccessFlags = 0;    descDepth.MiscFlags = 0;    hr = g_pd3dDevice->CreateTexture2D(&descDepth, NULL, &g_pDepthStencil);    if (FAILED(hr))        return hr;    // 创建深度模板视图    D3D11_DEPTH_STENCIL_VIEW_DESC descDSV;    ZeroMemory(&descDSV, sizeof(descDSV));    descDSV.Format = descDepth.Format;    descDSV.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;    descDSV.Texture2D.MipSlice = 0;    hr = g_pd3dDevice->CreateDepthStencilView(g_pDepthStencil, &descDSV, &g_pDepthStencilView);    if (FAILED(hr))        return hr;    g_pImmediateContext->OMSetRenderTargets( 1, &g_pRenderTargetView, g_pDepthStencilView );    // 设置 viewport    D3D11_VIEWPORT vp;    vp.Width = (FLOAT)width;    vp.Height = (FLOAT)height;    vp.MinDepth = 0.0f;    vp.MaxDepth = 1.0f;    vp.TopLeftX = 0;    vp.TopLeftY = 0;    g_pImmediateContext->RSSetViewports( 1, &vp );    return true;}

接下来是完整代码, 包括Win32程序的框架, 以后有时间的话补一个对Win32程序的简单说明

#include <windows.h>#include <d3d11.h>#include <d3dx11.h>#include <d3dcompiler.h>HINSTANCE               g_hInst = NULL;HWND                    g_hWnd = NULL;D3D_DRIVER_TYPE         g_driverType = D3D_DRIVER_TYPE_NULL;D3D_FEATURE_LEVEL       g_featureLevel = D3D_FEATURE_LEVEL_11_0;ID3D11Device*           g_pd3dDevice = NULL;ID3D11DeviceContext*    g_pImmediateContext = NULL;IDXGISwapChain*         g_pSwapChain = NULL;ID3D11RenderTargetView* g_pRenderTargetView = NULL;ID3D11Texture2D*        g_pDepthStencil = NULL;ID3D11DepthStencilView* g_pDepthStencilView = NULL;ID3D11VertexShader*     g_pVertexShader = NULL;ID3D11PixelShader*      g_pPixelShader = NULL;ID3D11InputLayout*      g_pVertexLayout = NULL;ID3D11Buffer*           g_pVertexBuffer = NULL;ID3D11Buffer*           g_pIndexBuffer = NULL;ID3D11Buffer*           g_pVSConstBuffer = NULL;ID3D11Buffer*           g_pPSConstBuffer = NULL;UINT                    g_IndexNum = 0;HRESULT InitWindow( HINSTANCE hInstance, int nCmdShow );LRESULT CALLBACK WndProc( HWND, UINT, WPARAM, LPARAM );HRESULT InitDevice( );int WINAPI wWinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow ){    UNREFERENCED_PARAMETER( hPrevInstance );    UNREFERENCED_PARAMETER( lpCmdLine );    if( FAILED( InitWindow( hInstance, nCmdShow ) ) )        return 0;    if( FAILED( InitDevice() ) )    {        //CleanupDevice();        return 0;    }    // Main message loop    MSG msg = {0};    while( WM_QUIT != msg.message )    {        if( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) )        {            TranslateMessage( &msg );            DispatchMessage( &msg );        }        else        {            //Render();        }    }    //CleanupDevice();    return ( int )msg.wParam;}HRESULT InitWindow( HINSTANCE hInstance, int nCmdShow ){    // Register class    WNDCLASSEX wcex;    wcex.cbSize = sizeof( WNDCLASSEX );    wcex.style = CS_HREDRAW | CS_VREDRAW;    wcex.lpfnWndProc = WndProc;    wcex.cbClsExtra = 0;    wcex.cbWndExtra = 0;    wcex.hInstance = hInstance;    wcex.hIcon = LoadIcon( NULL,IDC_ARROW );    wcex.hCursor = LoadCursor( NULL, IDC_ARROW );    wcex.hbrBackground = ( HBRUSH )( COLOR_WINDOW + 1 );    wcex.lpszMenuName = NULL;    wcex.lpszClassName = L"Triangle3D";    wcex.hIconSm = LoadIcon( NULL,IDC_ARROW );    if( !RegisterClassEx( &wcex ) )        return E_FAIL;    // Create window    g_hInst = hInstance;    RECT rc = { 0, 0, 640, 480 };    AdjustWindowRect( &rc, WS_OVERLAPPEDWINDOW, FALSE );    g_hWnd = CreateWindow( L"Triangle3D", L"Triangle3D", WS_OVERLAPPEDWINDOW,                           CW_USEDEFAULT, CW_USEDEFAULT, rc.right - rc.left, rc.bottom - rc.top, NULL, NULL, hInstance,                           NULL );    if( !g_hWnd )        return E_FAIL;    ShowWindow( g_hWnd, nCmdShow );    return S_OK;}LRESULT CALLBACK WndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam ){    PAINTSTRUCT ps;    HDC hdc;    switch( message )    {        case WM_PAINT:            hdc = BeginPaint( hWnd, &ps );            EndPaint( hWnd, &ps );            break;        case WM_DESTROY:            PostQuitMessage( 0 );            break;        default:            return DefWindowProc( hWnd, message, wParam, lParam );    }    return 0;}HRESULT InitDevice( ){    // 窗口信息    RECT rc;    GetClientRect( g_hWnd, &rc );    UINT width = rc.right - rc.left;    UINT height = rc.bottom - rc.top;    // 创建交换链描述    DXGI_SWAP_CHAIN_DESC sd;    sd.BufferDesc.Width = width;    sd.BufferDesc.Height = height;    sd.BufferDesc.RefreshRate.Numerator = 60;    sd.BufferDesc.RefreshRate.Denominator = 1;    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;    sd.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;    sd.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;    sd.BufferCount = 1;    sd.OutputWindow = g_hWnd;    sd.Windowed = true;    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;    sd.Flags = 0;    sd.SampleDesc.Count = 1; // 不使用 MSAA    sd.SampleDesc.Quality = 0;    // 调试模式    UINT createDeviceFlags = 0;    #if defined( DEBUG ) || defined( _DEBUG )    createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;    #endif    // 特征等级    D3D_FEATURE_LEVEL featureLevels[] =    {        D3D_FEATURE_LEVEL_11_0,        D3D_FEATURE_LEVEL_10_1,        D3D_FEATURE_LEVEL_10_0,    };    UINT numFeatureLevels = ARRAYSIZE( featureLevels );    // 创建 ID3D11Device, ID3D11DeviceContext, IDXGISwapChain    HRESULT hr = D3D11CreateDeviceAndSwapChain(        NULL,        g_driverType,        NULL,        createDeviceFlags,        featureLevels, numFeatureLevels,        D3D11_SDK_VERSION,        &sd,        &g_pSwapChain,        &g_pd3dDevice,        &g_featureLevel,        &g_pImmediateContext );    if( FAILED(hr) )    {        MessageBox( 0, L"D3D11CreateDeviceAndSwapChain Failed.", 0, 0 );        return false;    }    if( g_featureLevel != D3D_FEATURE_LEVEL_11_0 )    {        MessageBox( 0, L"Direct3D Feature Level 11 unsupported.", 0, 0 );        return false;    }    // 创建 render target view    ID3D11Texture2D* pBackBuffer = NULL;    hr = g_pSwapChain->GetBuffer( 0, __uuidof( ID3D11Texture2D ), ( LPVOID* )&pBackBuffer );    if( FAILED( hr ) )        return hr;    hr = g_pd3dDevice->CreateRenderTargetView( pBackBuffer, NULL, &g_pRenderTargetView );    pBackBuffer->Release();    if( FAILED( hr ) )        return hr;    // 创建深度模板缓冲    D3D11_TEXTURE2D_DESC descDepth;    ZeroMemory(&descDepth, sizeof(descDepth));    descDepth.Width = width;    descDepth.Height = height;    descDepth.MipLevels = 1;    descDepth.ArraySize = 1;    descDepth.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;    descDepth.SampleDesc.Count = 1;    descDepth.SampleDesc.Quality = 0;    descDepth.Usage = D3D11_USAGE_DEFAULT;    descDepth.BindFlags = D3D11_BIND_DEPTH_STENCIL;    descDepth.CPUAccessFlags = 0;    descDepth.MiscFlags = 0;    hr = g_pd3dDevice->CreateTexture2D(&descDepth, NULL, &g_pDepthStencil);    if (FAILED(hr))        return hr;    // 创建深度模板视图    D3D11_DEPTH_STENCIL_VIEW_DESC descDSV;    ZeroMemory(&descDSV, sizeof(descDSV));    descDSV.Format = descDepth.Format;    descDSV.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D;    descDSV.Texture2D.MipSlice = 0;    hr = g_pd3dDevice->CreateDepthStencilView(g_pDepthStencil, &descDSV, &g_pDepthStencilView);    if (FAILED(hr))        return hr;    g_pImmediateContext->OMSetRenderTargets( 1, &g_pRenderTargetView, g_pDepthStencilView );    // 设置 viewport    D3D11_VIEWPORT vp;    vp.Width = (FLOAT)width;    vp.Height = (FLOAT)height;    vp.MinDepth = 0.0f;    vp.MaxDepth = 1.0f;    vp.TopLeftX = 0;    vp.TopLeftY = 0;    g_pImmediateContext->RSSetViewports( 1, &vp );    return true;}

阅读全文

0 0