一起做游戏(二)

最新推荐文章于 2025-08-11 17:12:45 发布

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#游戏 #null #parameters

//创建D3D对象
g_pD3D = Direct3DCreate9( D3D_SDK_VERSION );

//获取显卡信息
D3DDISPLAYMODE d3ddm;
g_pD3D->GetAdapterDisplayMode( D3DADAPTER_DEFAULT, &d3ddm );

//设置合适的显示模式
   D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory( &d3dpp, sizeof(d3dpp) );

    d3dpp.Windowed               = TRUE;
    d3dpp.SwapEffect             = D3DSWAPEFFECT_DISCARD;
    d3dpp.BackBufferFormat       = d3ddm.Format;
    d3dpp.EnableAutoDepthStencil = TRUE;
    d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
    d3dpp.PresentationInterval   = D3DPRESENT_INTERVAL_IMMEDIATE;

//创建设备
   g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,
        g_hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING,
        &d3dpp, &g_pd3dDevice );

//创建并设置投影矩阵(透视投影)
    D3DXMATRIX matProj;
    D3DXMatrixPerspectiveFovLH( &matProj, D3DXToRadian( 45.0f ),
                                640.0f / 480.0f, 0.1f, 100.0f );
    g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );

//设置渲染环境参数(灯光等)    g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE );
    g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, TRUE );
    g_pd3dDevice->SetRenderState( D3DRS_SPECULARENABLE, TRUE );

// Setup a simple directional light and some ambient...
g_pLight0.Type = D3DLIGHT_DIRECTIONAL;
g_pLight0.Direction = D3DXVECTOR3( 1.0f, 0.0f, 1.0f );

    g_pLight0.Diffuse.r = 1.0f;
    g_pLight0.Diffuse.g = 1.0f;
    g_pLight0.Diffuse.b = 1.0f;
g_pLight0.Diffuse.a = 1.0f;

g_pLight0.Specular.r = 1.0f;
g_pLight0.Specular.g = 1.0f;
g_pLight0.Specular.b = 1.0f;
g_pLight0.Specular.a = 1.0f;

g_pd3dDevice->SetLight( 0, &g_pLight0 );
g_pd3dDevice->LightEnable( 0, TRUE );

g_pd3dDevice->SetRenderState( D3DRS_AMBIENT, D3DCOLOR_COLORVALUE( 0.2f, 0.2f, 0.2f, 1.0f ) );
ZeroMemory( &g_teapotMtrl, sizeof(D3DMATERIAL9) );

    g_teapotMtrl.Diffuse.r = 1.0f;
    g_teapotMtrl.Diffuse.g = 1.0f;
    g_teapotMtrl.Diffuse.b = 1.0f;
    g_teapotMtrl.Diffuse.a = 1.0f;

    // 装载MESH
    D3DXLoadMeshFromX( "teapot.x", D3DXMESH_SYSTEMMEM, g_pd3dDevice,
                       NULL, NULL, NULL, NULL, &g_pTeapotMesh );

    //如果需要可以访问后备缓冲区描述参数
    LPDIRECT3DSURFACE9 pBackBuffer = NULL;
    D3DSURFACE_DESC d3dsd;
    g_pd3dDevice->GetBackBuffer( 0, 0, D3DBACKBUFFER_TYPE_MONO, &pBackBuffer );
    pBackBuffer->GetDesc( &d3dsd );
    pBackBuffer->Release();
    g_dwBackBufferWidth = d3dsd.Width;
    g_dwBackBufferHeight = d3dsd.Height;

/*注:可以同时创建多个设备
还可以创建后备缓冲链 ,如:
g_pd3dDevice->GetSwapChain( 0, &g_swapChain_0 );
g_pd3dDevice->CreateAdditionalSwapChain( &d3dpp, &g_swapChain_1 );
通过如下操作
LPDIRECT3DSURFACE9 pBackBuffer = NULL;
g_swapChain_0->GetBackBuffer( 0, D3DBACKBUFFER_TYPE_MONO, &pBackBuffer );
g_pd3dDevice->SetRenderTarget( 0, pBackBuffer );
*/