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error X3025

orlando — Sat, 11 Oct 2008 11:50:00 GMT

error X3025: global variables are implicitly constant, enable compatibility mode to allow modification
全局变量是extern也是帔R��Q�在shader里面不能修改�Q�但可以从宿�ȝ��序里攏V�?br>以前的编译器没有强制�q�一点，现在新的强化了这一要求�?br>
把extern �Ҏ��static�q�行成功

orlando 2008-10-11 19:50 发表评论

BLASSREITER

orlando — Mon, 06 Oct 2008 13:41:00 GMT

歌词�Q?/p>

《DD�?br>いとうかなこ
words:渡边カズヒロ　music & arrange:村上正芳

Une autre victoire
Quelque chose perdu
Ton monde s'effondre
Mon coeur s'engourdit
C'est quoi,la victoire?
Pas d'espoir,rien
Tu sais pas comment
Je peux sortir?
Tu cherches l'amour
Tu appelles ce nom
Mais,c'est où,alors?
Tant pis,c'est trop tard
La justice pour chacun
Est trop différente
Y a-t-il la raison pour se battre?

Je me souviens pas
J'ai tout oublié
Je me rappelle pas
Mais je sais que je le veux

Les lumière sont éteintes
J'appelle ton nom
Crier vers la nuit
Encore toi que je veux

Le système en panne
On est tous évanouis
Si on se réveillait
Autre part
Nos āmes désespérées
L'amour qu'on connaissait
Dis-moi,
Tu l'as pas perdu
Je perds la force
La raison,c'était quoi?
Tiens ton espoir,
si tu en as un

Je me souviens pas
J'ai tout oublié
Je me rappelle pas
Mais je sais que je le veux

La conviction,celle dont on a besoin
La lumière,celle qui va nous conduire
L'espoir était si près de nous
Où on s'est trompé?

Je me souviens pas
J'ai tout oublié
Je me rappelle pas
Mais je sais que je le veux

Je me souviens pas
J'ai tout oublié
Je me rappelle pas
Mais je sais que je le veux

靠英文版��译出的大致歌词�Q?/p>

Another trophy won
又得��C��个冠军奖�?br>
But something's lost
但却失去了一些东�?br>
Your world collapses
你的世界崩溃�?br>
My heart turn numb
我的心变得麻木不�?br>
Triumph for what?
��Z��什么去取得胜利?

Zero hope,none
毫无希望,�?br>
Tell me the way to get out
告诉我脱��d��境的办法

If you find one
如果你找到的�?br>
I call your name
我呼唤着你的名字

You seek for love
你��求着�?br>
Know where it is?
知道在哪里吗?

I got news for you
我有消息�l�你

Roads too far apart
路途遥�q?br>
Answer the question
回答我的问题

Is there anything to fight for?
有什么值得奋斗的目标吗?

I don't remember
我不记得�?br>
No,I don't recall
�?是我不愿记�v

Yeah,I don't remember
�?我不记得�?br>
But I know I need it
但是我知道我需要它

One Faith
一个信�?br>
That's is all we need
那就是我们所需要的

One Light
一道明�?br>
That will show the way
��会照亮我们的道�?br>
What went wrong
有什么东西出错了

Hope was so close to our heads
希望已经��L��们很�q?br>
Won't someone tell me please?
有�h可以告诉我吗?

I don't remember
我不记得�?br>
No,I don't recall
�?是我不愿记�v

Yeah,I don't remember
�?我不记得�?br>
But I know I need it
但是我知道我需要它

I don't remember
我不记得�?br>
But I know I need it
但是我知道我需要它

orlando 2008-10-06 21:41 发表评论

使用矩阵堆栈

orlando — Sun, 10 Aug 2008 14:36:00 GMT

OpenGL�E�序员们习惯于管理变换矩�늚�堆栈的概��c��虽然DirectX�q�没有一个像OpenGL所采用的关于堆栈的内置概念�Q�但是D3DX库确实包括一个叫ID3DXMatrixStack的帮助接口。这个接口包含基本的堆栈操作�Q�例如通过Push与Pop以及一些函数方法，来帮助构建变换。然而与OpenGL不同�Q�你必须明确的将堆栈的内容传递给SetTransform,因�ؓ讑֤�本��n�q�不�l�护一个堆栈。当渲染一个复杂物体的时候，堆栈可以被用来跟�t�和��理变换状态�?br>
假设知道船只在�v中的位置和取向，也知道炮塔相对于船的位置以及炮管相对于炮塔的位置。与为每个物体计��多个矩�늄�后存储每个矩�늛�反，可以使用一个堆栈�ƈ按下列的步骤来渲染整个船只：
1、��用D3DXCreateMatrixStack创徏一个堆栈接口�?br>2、�ؓ船只的位�|�计��矩阵�ƈ��该矩阵压入堆栈�?br>3、将栈顶讄��为当前世界变换�ƈ渲染船体�?br>4、对栈做Push操作�q�连接炮塔的相对变换�?br>5、将栈顶讄��为当前世界变换�ƈ渲染炮塔�?br>6、对栈做Push操作�q�连接第一根炮��的相对变换�?br>7、将栈顶讄��为当前世界变换�ƈ渲染�W�一根炮��?br>8、对栈做Pop操作�Q�这��将炮塔变换�|�于栈顶�?br>9、对栈叫做Push操作�q�连接第二根炮管的相对变换�?br>10、将栈顶讄��为当前世界变换�ƈ渲染�W�二根炮��?br>11、对栈做Pop操作�Q�这��将炮塔变换�|�于栈顶�?br>12、对栈做Pop操作�Q�这��将船只变换�|�于栈顶�?br>13、以同样的方式渲染船只的其他部分�?/p>

orlando 2008-08-10 22:36 发表评论

��点法线

orlando — Sun, 10 Aug 2008 14:20:00 GMT

每个��点的顶点的法线向量是共享那个顶点的所有三角�Ş的法�U�向量的�q�_��倹{�?/strong>

orlando 2008-08-10 22:20 发表评论

学习��点�~�存与烦引缓�?�?

orlando — Sun, 10 Aug 2008 14:19:00 GMT

在学习顶点缓存与索引�~�存(一)的代码中
�Ҏ��下面�q�样��p��到目�?br> //��点数据
CUSTOMVERTEX g_Vertices[10];
g_Vertices[0].x = 300;
g_Vertices[0].y = 250;
g_Vertices[0].z = 0.5f;
g_Vertices[0].rhw = 1.0f;
g_Vertices[0].color = 0xffff0000;

//g_Vertices[9]=g_Vertices[0];
for(int i=0; i<8; i++)
{
  g_Vertices[i+1].x = (float)(200*sin(i*3.14159/4.0)) + 300;
  g_Vertices[i+1].y = -(float)(200*cos(i*3.14159/4.0)) + 250;
  g_Vertices[i+1].z = 0.5f;
  g_Vertices[i+1].rhw = 1.0f;
  g_Vertices[i+1].color = 0xff00ff00;
}
g_Vertices[9]=g_Vertices[1];

g_pd3dDevice->DrawPrimitive( D3DPT_TRIANGLEFAN, 0,8 );

索引�~�存可以不止一�ơ的引用同一��点�Q�这提供了超�q�三角�Ş列表的性能优势�Q�因为可以多�ơ重复��用一个顶点，也提供了��过三角形带的创造优势，因�ؓ创造过�E�不那么复杂�?/strong>

orlando 2008-08-10 22:19 发表评论

�U�理映射基础

orlando — Sun, 10 Aug 2008 03:19:00 GMT

�U�理坐标
   实际�U�理坐标&相对�U�理坐标

struct CUSTOMVERTEX
{
FLOAT x, y, z;    //��点位置
FLOAT u,v ;    //��点�U�理坐标
};
#define D3DFVF_CUSTOMVERTEX   (D3DFVF_XYZ|D3DFVF_TEX1)

//��点数据
    CUSTOMVERTEX g_Vertices[] =
    {
  { -3,   -3, 0.0f, 0.0f, 1.0f},
     { -3,    3, 0.0f, 0.0f, 0.0f},
     { 3,   -3, 0.0f, 1.0f, 1.0f},
     { 3,    3, 0.0f, 1.0f, 0.0f }

    };
讄��?br>//��点数据
    CUSTOMVERTEX g_Vertices[] =
    {
  { -3,   -3, 0.0f, 0.0f, 1.0f},
     { -3,    0, 0.0f, 0.0f, 0.5f},
     { 3,   -3, 0.0f, 1.0f, 1.0f},
     { 3,    0, 0.0f, 1.0f, 0.5f }

    };

只将一半纹理映��到囑օ��?br>

orlando 2008-08-10 11:19 发表评论

orlando — Tue, 05 Aug 2008 07:07:00 GMT
讄��资源��与一个顶点缓存挂钩，此流��是一个流入渲染管�U�的几何信息的流�?
下面的方法是用于讄��一个资源流�Q?
HRESULT IDirect3DDevice9::SetStreamSource(
       UINT StreamNumber,
       IDirect3DVertexBuffer9* pStreamData,
       UINT OffsetInBytes,
       UINT Stride
);
StreamNumber——确定我们的��点�~�存与哪一个资源流挂钩。我们不使用多重��；因此我们��L��使用0��h��?
pStreamData——一个指向我们想与流挂钩的那个顶点缓存的指针�?
OffsetInBytes——相�Ҏ��开始处的偏�U�量。以字节为单位，它指定被填入渲染��线的顶�Ҏ��据的开始位�|�。通过��查D3DCAPS9�l�构中的D3DDEVCAPS2_STREAMOFFSET标志�Q�假如你的设备支持，那么�q�个参数��有一些非0倹{�?
Stride——我们在��点�~�存中操作的每个部分的流的字节大��?
例如�Q�假设vb是一个已�l�填充了��点信息的顶点缓存：
_device->SetStreamSource( 0, vb, 0, sizeof( Vertex ) );

orlando 2008-08-05 15:07 发表评论

D3DXVec3Normalize 函数

orlando — Tue, 05 Aug 2008 04:05:00 GMT

�q�回3D向量的规格化向量�?/span>

定义�Q?/font>

D3DXVECTOR3 *WINAPI D3DXVec3Normalize(

    D3DXVECTOR3 *pOut,

    CONST D3DXVECTOR3 *pV

);

参数�Q?/font>

pOut

[in, out] 指向 D3DXVECTOR3 �l�构的操作结果�?/span>

pV

[in] 指向D3DXVECTOR3 �l�构的源向量�?/span>

�q�回��|��

指向D3DXVECTOR3 �l�构的规格化后的向量�?/span>

说明�Q?/font>

函数�q�回��D��pOut 参数�q�回值是一��L��。这样可以让函数D3DXVec3Normalize作�ؓ其它函数的参��C��用�?/span>

函数信息�Q?/font>

Header

d3dx9math.h

Import library

d3dx9.lib

Minimum operating systems

Windows 98

D3DXVec3Normalize( (D3DXVECTOR3*)&light1.Direction, &vecDir );

orlando 2008-08-05 12:05 发表评论

学习��点�~�存与烦引缓�?�?

orlando — Mon, 04 Aug 2008 12:36:00 GMT

//=============================================================================
// Desc: 坐标变换
//=============================================================================

#include //D3DX实用库函�? 该头文�g中又包含了d3d9.h头文�?/p>

//-----------------------------------------------------------------------------
// Desc: 全局变量
//-----------------------------------------------------------------------------
LPDIRECT3D9                g_pD3D       = NULL;    //Direct3D对象
LPDIRECT3DDEVICE9          g_pd3dDevice = NULL;    //Direct3D讑֤�对象
LPDIRECT3DVERTEXBUFFER9    g_pVB        = NULL;    //��点�~�冲区对�?br>HWND        g_Wnd     = NULL;    //�H�口句柄
D3DRECT                    g_ClentRect;
LPDIRECT3DINDEXBUFFER9  g_pIB  = NULL;

//-----------------------------------------------------------------------------
// Desc: ��点�l�构
//-----------------------------------------------------------------------------
struct CUSTOMVERTEX
{
    D3DXVECTOR3 position;
    DWORD color;
};
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE)

//-----------------------------------------------------------------------------
// Desc: 讄��世界矩阵
//-----------------------------------------------------------------------------
VOID SetupWorldMatrice()
{
//建立一个绕X轴动态旋转的世界矩阵
    D3DXMATRIX matWorld;
    UINT iTime = timeGetTime() % 1000;
    FLOAT fAngle = iTime * (2.0f * D3DX_PI) / 1000.0f;
D3DXMatrixIdentity( &matWorld );
    D3DXMatrixRotationX( &matWorld, fAngle );

//讄��世界矩阵
    g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld );
}

//-----------------------------------------------------------------------------
// Desc: 讄��观察矩阵和投��q��?br>//-----------------------------------------------------------------------------
VOID SetupViewandProjMatrices()
{
    //建立�q�设�|�观察矩�?br>    D3DXVECTOR3 vEyePt( 0.0f, 3.0f,-5.0f );
    D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
    D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
    D3DXMATRIX matView;
    D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
    g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView );

    //建立�q�设�|�投��q��?br>    D3DXMATRIX matProj;
    D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f );
    g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
}

//-----------------------------------------------------------------------------
// Desc: 讄��视区
//-----------------------------------------------------------------------------
VOID SetupViewPort()
{
RECT rect;
GetClientRect(g_Wnd,&rect);
D3DVIEWPORT9 vp;
vp.X      = 0;
vp.Y      = 0;
vp.Width = rect.right;
vp.Height = rect.bottom;
vp.MinZ   = 0.0f;
vp.MaxZ   = 1.0f;
g_pd3dDevice->SetViewport(&vp);
}

//-----------------------------------------------------------------------------
// Desc: 初始化Direct3D
//-----------------------------------------------------------------------------
HRESULT InitD3D( HWND hWnd )
{
//创徏Direct3D对象, 该对象用于创建Direct3D讑֤�对象
    if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) )
        return E_FAIL;

//讄��D3DPRESENT_PARAMETERS�l�构, 准备创徏Direct3D讑֤�对象
    D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory( &d3dpp, sizeof(d3dpp) );
    d3dpp.Windowed = TRUE;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;

//创徏Direct3D讑֤�对象
    if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd,
                                      D3DCREATE_SOFTWARE_VERTEXPROCESSING,
                                      &d3dpp, &g_pd3dDevice ) ) )
    {
        return E_FAIL;
    }

    //讄��剔出模式��Z��剔出��M��?正面和反�?
    g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );

//关闭光照处理, 默认情况下启用光照处�?br>    g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, FALSE );

//讄��观察和投��q��?br> SetupViewandProjMatrices();

//讄��视区
SetupViewPort();

return S_OK;
}

//-----------------------------------------------------------------------------
// Desc: 创徏场景囑�Ş
//-----------------------------------------------------------------------------
HRESULT InitGeometry()
{
//创顶点缓冲区
    if( FAILED( g_pd3dDevice->CreateVertexBuffer( 50*2*sizeof(CUSTOMVERTEX),
                                                  0, D3DFVF_CUSTOMVERTEX,
                                                  D3DPOOL_DEFAULT, &g_pVB, NULL ) ) )
    {
        return E_FAIL;
    }

//填充��点�~�冲�?br>    CUSTOMVERTEX* pVertices;
    if( FAILED( g_pVB->Lock( 0, 0, (void**)&pVertices, 0 ) ) )
        return E_FAIL;
    for( DWORD i=0; i<50; i++ )
    {
        FLOAT theta = (2*D3DX_PI*i)/(50-1);
        pVertices[2*i+0].position = D3DXVECTOR3( sinf(theta),-1.0f, cosf(theta) );
  pVertices[2*i+0].color   =0xffffff00;
        pVertices[2*i+1].position = D3DXVECTOR3( sinf(theta), 1.0f, cosf(theta) );
  pVertices[2*i+1].color   =0xffffff00;
    }
    g_pVB->Unlock();

WORD g_Indices[100] ;
int index;
for (index=0;index<100;index++)
{
  g_Indices[index]=index;
}
  //创徏索引�~�冲�?br> if( FAILED( g_pd3dDevice->CreateIndexBuffer( 100*sizeof(WORD),
                                                  0, D3DFMT_INDEX16, //索引�c�d��
                                                  D3DPOOL_DEFAULT, &g_pIB,NULL ) ) )
    {
        return E_FAIL;
    }

//填充索引�~�冲�?br>    VOID* pIndices;
    if( FAILED( g_pIB->Lock( 0, sizeof(g_Indices), (void**)&pIndices, 0 ) ) )
        return E_FAIL;
    memcpy( pIndices, g_Indices, sizeof(g_Indices) );
    g_pIB->Unlock();

    return S_OK;
}

//-----------------------------------------------------------------------------
// Desc: 释放创徏的对�?br>//-----------------------------------------------------------------------------
VOID Cleanup()
{
//释放��点�~�冲区对�?br>    if( g_pVB != NULL )
        g_pVB->Release();

//释放Direct3D讑֤�对象
    if( g_pd3dDevice != NULL )
        g_pd3dDevice->Release();

//释放Direct3D对象
    if( g_pD3D != NULL )
        g_pD3D->Release();
}

//-----------------------------------------------------------------------------
// Desc: 渲染囑�Ş
//-----------------------------------------------------------------------------
VOID Render()
{
//清空后台�~�冲�?br>    g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(45, 50, 170), 1.0f, 0 );

//开始在后台�~�冲区绘制图�?br>    if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
    {
  //讄��世界矩阵
        SetupWorldMatrice();

  //在后台缓冲区�l�制囑�Ş

  g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(CUSTOMVERTEX) );
        g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
     g_pd3dDevice->SetIndices( g_pIB ); //讄��索引�~�冲�?br>     g_pd3dDevice->DrawIndexedPrimitive ( D3DPT_LINELIST, 0,0,100,0,50 );

  //�l�束在后台缓冲区渲染囑�Ş
        g_pd3dDevice->EndScene();
    }

//��在后台�~�冲区绘制的囑�Ş提交到前台缓冲区昄��
    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;
}

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

//-----------------------------------------------------------------------------
// Desc: 入口函数
//-----------------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT )
{
//注册�H�口�c?br>    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC , MsgProc, 0L, 0L,
                      GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
                      L"ClassName", NULL };
    RegisterClassEx( &wc );

//创徏�H�口
    HWND hWnd = CreateWindow( L"ClassName", L"坐标变换",
                              WS_OVERLAPPEDWINDOW, 200, 100, 500,500,
                              GetDesktopWindow(), NULL, wc.hInstance, NULL );
g_Wnd=hWnd;

//初始化Direct3D
    if( SUCCEEDED( InitD3D( hWnd ) ) )
    {
  //创徏场景囑�Ş
        if( SUCCEEDED( InitGeometry() ) )
        {
   //昄��H�口
            ShowWindow( hWnd, SW_SHOWDEFAULT );
            UpdateWindow( hWnd );

   //�q�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(); //渲染囑�Ş
    }
            }
        }
    }

    UnregisterClass( L"ClassName", wc.hInstance );
    return 0;
}
在上面的代码�?br> g_pd3dDevice->DrawIndexedPrimitive ( D3DPT_LINELIST, 0,0,100,0,50 );
可以昄��出LINELIST
但设�|��ؓ�Q�D3DPT_POINTLIST,0,0,100,0,100�Q�时却不能显�C�POINT�Q?br>�q�是��Z��么？

orlando 2008-08-04 20:36 发表评论

学习��点�~�存与烦引缓�?一)

orlando — Mon, 04 Aug 2008 07:35:00 GMT

在学习了��点�~�存和烦引缓存后�q�行了一个例子：

//=============================================================================
// Desc: 索引�~�冲�?br>//=============================================================================

#include
#include

//-----------------------------------------------------------------------------
// Desc: 全局变量
//-----------------------------------------------------------------------------
LPDIRECT3D9             g_pD3D       = NULL; // Direct3D对象
LPDIRECT3DDEVICE9       g_pd3dDevice = NULL; // Direct3D讑֤�对象
LPDIRECT3DVERTEXBUFFER9 g_pVB        = NULL; // ��点�~�冲区对�?br>LPDIRECT3DINDEXBUFFER9 g_pIB   = NULL; // 索引�~�冲区对�?/p>

//-----------------------------------------------------------------------------
// Desc: ��点�l�构和灵�z�顶�Ҏ��?br>//-----------------------------------------------------------------------------
struct CUSTOMVERTEX
{   FLOAT x, y, z, rhw;   // �l�过坐标转换的顶点位�|?br>    DWORD color;          // ��点漫反��颜色�?br>};
#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZRHW|D3DFVF_DIFFUSE)

//-----------------------------------------------------------------------------
// Desc: 初始化Direct3D
//-----------------------------------------------------------------------------
HRESULT InitD3D( HWND hWnd )
{
//创徏Direct3D对象, 该对象用于创建Direct3D讑֤�对象
    if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) )
        return E_FAIL;

    //讄��D3DPRESENT_PARAMETERS�l�构, 准备创徏Direct3D讑֤�对象
    D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory( &d3dpp, sizeof(d3dpp) );
    d3dpp.Windowed = TRUE;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;

//创徏Direct3D讑֤�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: 创徏�q�填充顶点缓冲区和烦引缓冲区
//-----------------------------------------------------------------------------
HRESULT InitVBAndIB()
{
//��点数据
CUSTOMVERTEX g_Vertices[9];
g_Vertices[0].x = 300;
g_Vertices[0].y = 250;
g_Vertices[0].z = 0.5f;
g_Vertices[0].rhw = 1.0f;
g_Vertices[0].color = 0xffff0000;
for(int i=0; i<8; i++)
{
  g_Vertices[i+1].x = (float)(200*sin(i*3.14159/4.0)) + 300;
  g_Vertices[i+1].y = -(float)(200*cos(i*3.14159/4.0)) + 250;
  g_Vertices[i+1].z = 0.5f;
  g_Vertices[i+1].rhw = 1.0f;
  g_Vertices[i+1].color = 0xff00ff00;
}

//��点索引数组
WORD g_Indices[] ={ 0,1,2, 0,2,3, 0,3,4, 0,4,5, 0,5,6, 0,6,7, 0,7,8, 0,8,1 };

//创徏��点�~�冲�?br>    if( FAILED( g_pd3dDevice->CreateVertexBuffer( 9*sizeof(CUSTOMVERTEX),
                                                  0, D3DFVF_CUSTOMVERTEX,
                                                  D3DPOOL_DEFAULT, &g_pVB,NULL ) ) )
    {
        return E_FAIL;
    }

//填充��点�~�冲�?br>    VOID* pVertices;
    if( FAILED( g_pVB->Lock( 0, sizeof(g_Vertices), (void**)&pVertices, 0 ) ) )
        return E_FAIL;
    memcpy( pVertices, g_Vertices, sizeof(g_Vertices) );
    g_pVB->Unlock();

//创徏索引�~�冲�?br> if( FAILED( g_pd3dDevice->CreateIndexBuffer( 24*sizeof(WORD),
                                                  0, D3DFMT_INDEX16, //索引�c�d��
                                                  D3DPOOL_DEFAULT, &g_pIB,NULL ) ) )
    {
        return E_FAIL;
    }

//填充��点�~�冲�?br>    VOID* pIndices;
    if( FAILED( g_pIB->Lock( 0, sizeof(g_Indices), (void**)&pIndices, 0 ) ) )
        return E_FAIL;
    memcpy( pIndices, g_Indices, sizeof(g_Indices) );
    g_pIB->Unlock();

    return S_OK;
}

//-----------------------------------------------------------------------------
// Desc: 释放创徏的对�?br>//-----------------------------------------------------------------------------
VOID Cleanup()
{
//释放��点�~�冲区对�?br>    if( g_pVB != NULL )
        g_pVB->Release();

//释放索引�~�冲区对�?br> if(g_pIB != NULL)
  g_pIB->Release();

//释放Direct3D讑֤�对象
    if( g_pd3dDevice != NULL )
        g_pd3dDevice->Release();

//释放Direct3D对象
    if( g_pD3D != NULL )
        g_pD3D->Release();
}

//-----------------------------------------------------------------------------
// Desc: 渲染囑�Ş
//-----------------------------------------------------------------------------
VOID Render()
{
//清空后台�~�冲�?br>    g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0,0,255), 1.0f, 0 );

//开始在后台�~�冲区绘制图�?br>  if( SUCCEEDED( g_pd3dDevice->BeginScene()))
    {
  //在后台缓冲区�l�制囑�Ş
        g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(CUSTOMVERTEX) );
        g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
     g_pd3dDevice->SetIndices( g_pIB ); //讄��索引�~�冲�?br>     g_pd3dDevice->DrawIndexedPrimitive ( D3DPT_TRIANGLELIST, 0,0,9,0,8 );

  //�l�束在后台缓冲区渲染囑�Ş
        g_pd3dDevice->EndScene();
    }

//��在后台�~�冲区绘制的囑�Ş提交到前台缓冲区昄��
    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:
            PostQuitMessage( 0 );
            return 0;
    }
    return DefWindowProc( hWnd, msg, wParam, lParam );
}

//-----------------------------------------------------------------------------
// Desc: 入口函数
//-----------------------------------------------------------------------------
INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT )
{
//注册�H�口�c?br>    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC | CS_HREDRAW | CS_VREDRAW, MsgProc, 0L, 0L,
                      GetModuleHandle(NULL), NULL, NULL, NULL, NULL,
                      L"ClassName", NULL };
    RegisterClassEx( &wc );

//创徏�H�口
    HWND hWnd = CreateWindow( L"ClassName", L"索引�~�冲�?,
                              WS_OVERLAPPEDWINDOW, 200, 100, 600, 550,
                              GetDesktopWindow(), NULL, wc.hInstance, NULL );

//初始化Direct3D
    if( SUCCEEDED( InitD3D( hWnd ) ) )
    {
  //创徏�q�填充顶点缓冲区和烦引缓冲区
        if( SUCCEEDED( InitVBAndIB() ) )
        {
   //昄��H�口
            ShowWindow( hWnd, SW_SHOWDEFAULT );
            UpdateWindow( hWnd );

   //�q�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(); //渲染囑�Ş
    }
            }
        }
    }

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

但当我想把例子改成下面那样��用顶点缓存时发现不能辑ֈ�目的

HRESULT InitVBAndIB()
{
//��点数据
CUSTOMVERTEX g_Vertices[9];
g_Vertices[0].x = 300;
g_Vertices[0].y = 250;
g_Vertices[0].z = 0.5f;
g_Vertices[0].rhw = 1.0f;
g_Vertices[0].color = 0xffff0000;
for(int i=0; i<8; i++)
{
  g_Vertices[i+1].x = (float)(200*sin(i*3.14159/4.0)) + 300;
  g_Vertices[i+1].y = -(float)(200*cos(i*3.14159/4.0)) + 250;
  g_Vertices[i+1].z = 0.5f;
  g_Vertices[i+1].rhw = 1.0f;
  g_Vertices[i+1].color = 0xff00ff00;
}

//��点索引数组
WORD g_Indices[] ={ 0,1,2, 0,2,3, 0,3,4, 0,4,5, 0,5,6, 0,6,7, 0,7,8, 0,8,1 };

//创徏��点�~�冲�?br>    if( FAILED( g_pd3dDevice->CreateVertexBuffer( 9*sizeof(CUSTOMVERTEX),
                                                  0, D3DFVF_CUSTOMVERTEX,
                                                  D3DPOOL_DEFAULT, &g_pVB,NULL ) ) )
    {
        return E_FAIL;
    }

//填充��点�~�冲�?br>    VOID* pVertices;
    if( FAILED( g_pVB->Lock( 0, sizeof(g_Vertices), (void**)&pVertices, 0 ) ) )
        return E_FAIL;
    memcpy( pVertices, g_Vertices, sizeof(g_Vertices) );
    g_pVB->Unlock();

     return S_OK;
}

//-----------------------------------------------------------------------------
// Desc: 释放创徏的对�?br>//-----------------------------------------------------------------------------
VOID Cleanup()
{
//释放��点�~�冲区对�?br>    if( g_pVB != NULL )
        g_pVB->Release();

//释放Direct3D讑֤�对象
    if( g_pd3dDevice != NULL )
        g_pd3dDevice->Release();

//释放Direct3D对象
    if( g_pD3D != NULL )
        g_pD3D->Release();
}

//-----------------------------------------------------------------------------
// Desc: 渲染囑�Ş
//-----------------------------------------------------------------------------
VOID Render()
{
//清空后台�~�冲�?br>    g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0,0,255), 1.0f, 0 );

//开始在后台�~�冲区绘制图�?br>  if( SUCCEEDED( g_pd3dDevice->BeginScene()))
    {
  //在后台缓冲区�l�制囑�Ş
        g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof(CUSTOMVERTEX) );
        g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
      g_pd3dDevice->DrawPrimitive ( D3DPT_TRIANGLELIST, 0,8 );

  //�l�束在后台缓冲区渲染囑�Ş
        g_pd3dDevice->EndScene();
    }

//��在后台�~�冲区绘制的囑�Ş提交到前台缓冲区昄��
    g_pd3dDevice->Present( NULL, NULL, NULL, NULL );
}

后来才发��C��用顶点缓冲区�l�制囑�Ş时不能共用顶点，除非使用索引�~�存

orlando 2008-08-04 15:35 发表评论

Header	d3dx9math.h
Import library	d3dx9.lib
Minimum operating systems	Windows 98