最简单的d3d例子

 

最简单的d3d例子

 

//=============================================================================

// Desc: 最简单的Direct3D程序,

//

// 必须安装D3D SDK

// 在项目属性页中　配置属性-> 链接器-> 输入-> 附加依赖选项-> d3d9.lib

// VC工具-> 选项-> VC++目录下拉框中选择库文件与包含文件添加DX的include 与lib目录

//=============================================================================

 

#include <d3d9.h>

 

 

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

// 全局变量

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

LPDIRECT3D9             g_pD3D       = NULL; //Direct3D对象

LPDIRECT3DDEVICE9       g_pd3dDevice = NULL; //Direct3D设备对象

 

 

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

// Desc: 初始化Direct3D

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

HRESULT InitD3D( HWND hWnd )

{

     //创建Direct3D对象, 该对象用来创建Direct3D设备对象

    if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) )

        return E_FAIL;

 

     //设置D3DPRESENT_PARAMETERS结构, 准备创建Direct3D设备对象

    D3DPRESENT_PARAMETERS d3dpp;

    ZeroMemory( &d3dpp, sizeof(d3dpp) );

    d3dpp.Windowed = TRUE;

    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;

    d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;

 

     //创建Direct3D设备对象

    if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd,

                                      D3DCREATE_SOFTWARE_VERTEXPROCESSING,

                                      &d3dpp, &g_pd3dDevice ) ) )

    {

        return E_FAIL;

    }

 

   return S_OK;

}

 

 

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

// Desc: 释放创建对象

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

VOID Cleanup()

{

     //释放Direct3D设备对象

    if( g_pd3dDevice != NULL)

        g_pd3dDevice->Release();

 

     //释放Direct3D对象

    if( g_pD3D != NULL)

        g_pD3D->Release();

}

 

 

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

// Desc: 渲染图形

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

VOID Render()

{

    //清空后台缓冲区

    g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(45, 50, 170), 1.0f, 0 );

   

    //开始在后台缓冲区绘制图形

    if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )

    {

        //在此在后台缓冲区绘制图形

   

        //结束在后台缓冲区渲染图形

        g_pd3dDevice->EndScene();

    }

 

    //将在后台缓冲区绘制的图形提交到前台缓冲区显示

    g_pd3dDevice->Present( NULL, NULL, NULL, NULL );

}

 

 

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

// Desc: 消息处理

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

LRESULT WINAPI MsgProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam )

{

    switch( msg )

    {

        case WM_DESTROY:

            Cleanup();

            PostQuitMessage( 0 );

            return 0;

 

        case WM_PAINT:

            Render();

            ValidateRect( hWnd, NULL );

            return 0;

    }

 

    return DefWindowProc( hWnd, msg, wParam, lParam );

}

 

 

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

// Desc: 程序入口

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

INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT )

{

    //注册窗口类

    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,

                      GetModuleHandle(NULL), NULL, NULL, NULL, NULL,

                      L"ClassName", NULL };

    RegisterClassEx( &wc );

 

    //创建窗口

    HWND hWnd = CreateWindow( L"ClassName", L"最简单的Direct3D程序",

                              WS_OVERLAPPEDWINDOW, 200, 100, 600, 500,

                              NULL, NULL, wc.hInstance, NULL );

 

    //初始化Direct3D

    if( SUCCEEDED( InitD3D( hWnd ) ) )

    {

        //显示主窗口

         ShowWindow( hWnd, SW_SHOWDEFAULT );

         UpdateWindow( hWnd );

 

         //进入消息循环

         MSG msg;

         ZeroMemory( &msg, sizeof(msg) );

         while( msg.message!=WM_QUIT )

         {

              if( PeekMessage( &msg, NULL, 0U, 0U, PM_REMOVE ) )

              {

                   TranslateMessage( &msg );

                   DispatchMessage( &msg );

              }

              else

              {

                   Render(); //渲染图形

              }

         }

    }

 

    UnregisterClass( L"ClassName", wc.hInstance );

    return 0;

}