my first d3d application 哈哈哈。

呵呵，其实还蛮简单的，在d3d第一个例子，createdevice的基础上 照着书打了一个三角形的代码

总结一下，流程就是，main函数-》创建d3d设备-》创建顶点buff-》渲染。就出现了。

 

下一步研究下怎么贴图~

 

//-----------------------------------------------------------------------------
// File: CreateDevice.cpp
//
// Desc: This is the first tutorial for using Direct3D. In this tutorial, all
//       we are doing is creating a Direct3D device and using it to clear the
//       window.
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
#include <d3d9.h>
#pragma warning( disable : 4996 ) // disable deprecated warning 
#include <strsafe.h>
#pragma warning( default : 4996 )




//-----------------------------------------------------------------------------
// Global variables
//-----------------------------------------------------------------------------
LPDIRECT3D9         g_pD3D = NULL; // Used to create the D3DDevice
LPDIRECT3DDEVICE9   g_pd3dDevice = NULL; // Our rendering device
LPDIRECT3DVERTEXBUFFER9 g_pVB=NULL;

struct CUSTOMVERTEX
{
    float x,y,z,rhw;
    DWORD color;
};



HRESULT InitVB()
{
    CUSTOMVERTEX vertices[]=
    {
        {100.0f,400.0f,0.5f,1.0f,0xffff0000,},
        {300.0f,50.0f,0.5f,1.0f,0xff00ff00,},
        {500.0f,400.0f,0.5f,1.0f,0xff0000ff,},
    };

    if(FAILED(g_pd3dDevice->CreateVertexBuffer(3*sizeof(CUSTOMVERTEX),0,D3DFVF_XYZRHW|D3DFVF_DIFFUSE,D3DPOOL_DEFAULT,&g_pVB,NULL)))
    {
        return E_FAIL;
    }

    VOID *pVertices;
    
    if(FAILED(g_pVB->Lock(0,sizeof(vertices),(void**)&pVertices,0)))
    {
        return E_FAIL;
    }
    memcpy(pVertices,vertices,sizeof(vertices));
    g_pVB->Unlock();
    return S_OK;
}
//-----------------------------------------------------------------------------
// Name: InitD3D()
// Desc: Initializes Direct3D
//-----------------------------------------------------------------------------
HRESULT InitD3D( HWND hWnd )
{
    // Create the D3D object, which is needed to create the D3DDevice.
    if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) )
        return E_FAIL;

    // Set up the structure used to create the D3DDevice. Most parameters are
    // zeroed out. We set Windowed to TRUE, since we want to do D3D in a
    // window, and then set the SwapEffect to "discard", which is the most
    // efficient method of presenting the back buffer to the display.  And 
    // we request a back buffer format that matches the current desktop display 
    // format.
    D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory( &d3dpp, sizeof( d3dpp ) );
    d3dpp.Windowed = TRUE;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;

    // Create the Direct3D device. Here we are using the default adapter (most
    // systems only have one, unless they have multiple graphics hardware cards
    // installed) and requesting the HAL (which is saying we want the hardware
    // device rather than a software one). Software vertex processing is 
    // specified since we know it will work on all cards. On cards that support 
    // hardware vertex processing, though, we would see a big performance gain 
    // by specifying hardware vertex processing.
    if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd,
                                      D3DCREATE_SOFTWARE_VERTEXPROCESSING,
                                      &d3dpp, &g_pd3dDevice ) ) )
    {
        return E_FAIL;
    }

    // Device state would normally be set here

    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
VOID Cleanup()
{
    if( g_pd3dDevice != NULL )
        g_pd3dDevice->Release();

    if( g_pD3D != NULL )
        g_pD3D->Release();

    if( g_pVB != NULL )
        g_pVB->Release();
}




//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Draws the scene
//-----------------------------------------------------------------------------
VOID Render()
{
    if( NULL == g_pd3dDevice )
        return;

    // Clear the backbuffer to a blue color
    g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB( 45, 50, 170 ), 1.0f, 0 );

    // Begin the scene
    if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
    {
        g_pd3dDevice->SetStreamSource(0,g_pVB,0,sizeof(CUSTOMVERTEX));
        g_pd3dDevice->SetFVF(D3DFVF_XYZRHW|D3DFVF_DIFFUSE);
        g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,1); 
        g_pd3dDevice->EndScene();
    }

    // Present the backbuffer contents to the display
    g_pd3dDevice->Present( NULL, NULL, NULL, NULL );
}




//-----------------------------------------------------------------------------
// Name: MsgProc()
// Desc: The window's message handler
//-----------------------------------------------------------------------------
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 );
}




//-----------------------------------------------------------------------------
// Name: wWinMain()
// Desc: The application's entry point
//-----------------------------------------------------------------------------
INT WINAPI wWinMain( HINSTANCE hInst, HINSTANCE, LPWSTR, INT )
{
    UNREFERENCED_PARAMETER( hInst );

    // Register the window class
    WNDCLASSEX wc =
    {
        sizeof( WNDCLASSEX ), CS_CLASSDC, MsgProc, 0L, 0L,
        GetModuleHandle( NULL ), NULL, NULL, NULL, NULL,
        L"D3D Tutorial", NULL
    };
    RegisterClassEx( &wc );

    // Create the application's window
    HWND hWnd = CreateWindow( L"D3D Tutorial", L"D3D Tutorial 01: CreateDevice",
                              WS_OVERLAPPEDWINDOW, 200, 100, 600, 500,
                              NULL, NULL, wc.hInstance, NULL );

    // Initialize Direct3D
    if( SUCCEEDED( InitD3D( hWnd ) ) )
    {
        // Show the window
        InitVB();
        ShowWindow( hWnd, SW_SHOWDEFAULT );
        UpdateWindow( hWnd );

        // Enter the message loop
        MSG msg;
        while( GetMessage( &msg, NULL, 0, 0 ) )
        {
            TranslateMessage( &msg );
            DispatchMessage( &msg );
        }
    }

    UnregisterClass( L"D3D Tutorial", wc.hInstance );
    return 0;
}