bool DXSetup(){    /*******************************************************************************************    * 背景墙    *******************************************************************************************/

// 创建顶点    g_pd3dDevice->CreateVertexBuffer(6 * sizeof(DX7Vertex),         D3DUSAGE_WRITEONLY,        DX7Vertex::FVF,        D3DPOOL_MANAGED,        &BkGndQuad,0);

    DX7Vertex* v;    BkGndQuad->Lock(0, 0, (void**)&v, 0);

// quad built from two triangles, note texture coordinates:    v[0] = DX7Vertex(-6.0f, -6.0f, 5.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f);    v[1] = DX7Vertex(-6.0f,  6.0f, 5.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f);    v[2] = DX7Vertex( 6.0f,  6.0f, 5.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f);

    v[3] = DX7Vertex(-6.0f, -6.0f, 5.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f);    v[4] = DX7Vertex( 6.0f,  6.0f, 5.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f);    v[5] = DX7Vertex( 6.0f, -6.0f, 5.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f);    BkGndQuad->Unlock();

// 设置过滤器    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_POINT);        // 设置Mipmaps过滤器

// 创建并使用纹理    D3DXCreateTextureFromFile(g_pd3dDevice, "..\\Texture\\256.bmp", &BkGndTex);    BkGndMtrl = WHITE_MTRL;

/*******************************************************************************************    * 物体    *******************************************************************************************/

// 茶壶材质    ::ZeroMemory(&TeapotMtrl, sizeof(TeapotMtrl));    TeapotMtrl.Ambient = RED;    TeapotMtrl.Diffuse = RED;    TeapotMtrl.Specular = RED;    TeapotMtrl.Emissive = BLACK;    TeapotMtrl.Power = 10.0f;    

// 茶壶物体    D3DXCreateTeapot(g_pd3dDevice, &Teapot, NULL);        // 画一个茶壶

// 灯光默认为True//g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, false);

// 设置摄影机    D3DXVECTOR3 position(0.0f, 0.0f, -3.0f);    D3DXVECTOR3 target(0.0f, 0.0f, 0.0f);    D3DXVECTOR3 up(0.0f, 1.0f, 0.0f);    D3DXMATRIX camera;    D3DXMatrixLookAtLH(&camera,&position, &target, &up);    g_pd3dDevice->SetTransform(D3DTS_VIEW, &camera);

/*******************************************************************************************    * 场景、灯光、摄影机&可视体设置    *******************************************************************************************/

// 设置灯光    D3DLIGHT9 dir;    ::ZeroMemory(&dir, sizeof(dir));    dir.Type = D3DLIGHT_POINT;    dir.Diffuse = WHITE;    dir.Specular = WHITE * 0.3f;    dir.Ambient = WHITE * 0.6f;    dir.Position = D3DXVECTOR3(10.0f, 10.0f, -10.0f);    dir.Range = 100;    g_pd3dDevice->SetLight(0, &dir);    g_pd3dDevice->LightEnable(0, true);

    g_pd3dDevice->SetRenderState(D3DRS_NORMALIZENORMALS, true);    g_pd3dDevice->SetRenderState(D3DRS_SPECULARENABLE, true);

// use alpha in material's diffuse component for alpha    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_DIFFUSE);    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG1);

// set blending factors so that alpha// component determines transparency    g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);    g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);

// 设置投影矩阵    D3DXMATRIX proj;    D3DXMatrixPerspectiveFovLH(        &proj,        D3DX_PI * 0.5f, // 90 - degree        (float)Width / (float)Height,1.0f,1000.0f);    g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &proj);

return true;}

void Render(){// keyboard message process -->>

// increase/decrease alpha via keyboard input    if (::GetAsyncKeyState('A') & 0x8000f)        TeapotMtrl.Diffuse.a += 0.01f;if (::GetAsyncKeyState('S') & 0x8000f)        TeapotMtrl.Diffuse.a -= 0.01f;

// force alpha to[0,1] interval    if (TeapotMtrl.Diffuse.a > 1.0f)        TeapotMtrl.Diffuse.a = 1.0f;if (TeapotMtrl.Diffuse.a < 0.0f)        TeapotMtrl.Diffuse.a = 0.0f;// keyboard message process <<--

static float angle = 0.0f;    angle += 0.02f;if (angle > 6.48)    {        angle = 0;    }

    g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, D3DCOLOR_ARGB(0x00,200,200,200), 1.0f, 0);    g_pd3dDevice->BeginScene();// rendering of scene objects happens here

// 画纹理背景墙    D3DXMATRIX priCode;    D3DXMatrixIdentity(&priCode);    g_pd3dDevice->SetTransform(D3DTS_WORLD, &priCode);    g_pd3dDevice->SetFVF(D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX1);    g_pd3dDevice->SetStreamSource(0, BkGndQuad, 0, sizeof(DX7Vertex));        g_pd3dDevice->SetMaterial(&BkGndMtrl);    // 设置材质    g_pd3dDevice->SetTexture(0, BkGndTex);    // 设置纹理    g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, 0, 2);

// 画Mesh    g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, true);    g_pd3dDevice->SetFVF(D3DFVF_XYZ | D3DFVF_NORMAL);    g_pd3dDevice->SetMaterial(&TeapotMtrl);        // 设置材质(并没有设置纹理,但是效果却是与纹理混合的效果,因为前面设置了纹理)    Teapot->DrawSubset(0);    g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false);

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