The definite guide to Direct3D 9随书源代码

#include <Windows.h> #include <mmsystem.h> #include <d3dx9.h> //----------------------------------------------------------------------------- // Global variables //----------------------------------------------------------------------------- LPDIRECT3D9 g_pD3D = NULL; // Used to create the D3DDevice LPDIRECT3DDEVICE9 g_pd3dDevice = NULL; // Our rendering device LPD3DXMESH g_pMesh = NULL; // Our mesh object in sysmem D3DMATERIAL9* g_pMeshMaterials = NULL; // Materials for our mesh LPDIRECT3DTEXTURE9* g_pMeshTextures = NULL; // Textures for our mesh DWORD g_dwNumMaterials = 0L; // Number of mesh materials //----------------------------------------------------------------------------- // Name: InitD3D() // Desc: Initializes Direct3D //----------------------------------------------------------------------------- HRESULT InitD3D( HWND hWnd ) { // Create the D3D object. if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) ) return E_FAIL; // Set up the structure used to create the D3DDevice. Since we are now // using more complex geometry, we will create a device with a zbuffer. D3DPRESENT_PARAMETERS d3dpp; ZeroMemory( &d3dpp, sizeof(d3dpp) ); d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.BackBufferFormat = D3DFMT_UNKNOWN; d3dpp.EnableAutoDepthStencil = TRUE; d3dpp.AutoDepthStencilFormat = D3DFMT_D16; // Create the D3DDevice if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pd3dDevice ) ) ) { if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_REF, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pd3dDevice ) ) ) return E_FAIL; } // Turn on the zbuffer g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE ); // Turn on ambient lighting g_pd3dDevice->SetRenderState( D3DRS_AMBIENT, 0xffffffff ); return S_OK; } //----------------------------------------------------------------------------- // Name: InitGeometry() // Desc: Load the mesh and build the material and texture arrays //----------------------------------------------------------------------------- HRESULT InitGeometry() { LPD3DXBUFFER pD3DXMtrlBuffer; // Load the mesh from the specified file if( FAILED( D3DXLoadMeshFromX( "Tiger.x", D3DXMESH_SYSTEMMEM, g_pd3dDevice, NULL, &pD3DXMtrlBuffer, NULL, &g_dwNumMaterials, &g_pMesh ) ) ) { // If model is not in current folder, try parent folder if( FAILED( D3DXLoadMeshFromX( "..\\Tiger.x", D3DXMESH_SYSTEMMEM, g_pd3dDevice, NULL, &pD3DXMtrlBuffer, NULL, &g_dwNumMaterials, &g_pMesh ) ) ) { MessageBox(NULL, "Could not find tiger.x", "Meshes.exe", MB_OK); return E_FAIL; } } // We need to extract the material properties and texture names from the // pD3DXMtrlBuffer D3DXMATERIAL* d3dxMaterials = (D3DXMATERIAL*)pD3DXMtrlBuffer->GetBufferPointer(); g_pMeshMaterials = new D3DMATERIAL9[g_dwNumMaterials]; g_pMeshTextures = new LPDIRECT3DTEXTURE9[g_dwNumMaterials]; for( DWORD i=0; i<g_dwNumMaterials; i++ ) { // Copy the material g_pMeshMaterials[i] = d3dxMaterials[i].MatD3D; // Set the ambient color for the material (D3DX does not do this) g_pMeshMaterials[i].Ambient = g_pMeshMaterials[i].Diffuse; g_pMeshTextures[i] = NULL; if( d3dxMaterials[i].pTextureFilename != NULL && lstrlen(d3dxMaterials[i].pTextureFilename) > 0 ) { // Create the texture if( FAILED( D3DXCreateTextureFromFile( g_pd3dDevice, d3dxMaterials[i].pTextureFilename, &g_pMeshTextures[i] ) ) ) { // If texture is not in current folder, try parent folder const TCHAR* strPrefix = TEXT("..\\"); const int lenPrefix = lstrlen( strPrefix ); TCHAR strTexture[MAX_PATH]; lstrcpyn( strTexture, strPrefix, MAX_PATH ); lstrcpyn( strTexture + lenPrefix, d3dxMaterials[i].pTextureFilename, MAX_PATH - lenPrefix ); // If texture is not in current folder, try parent folder if( FAILED( D3DXCreateTextureFromFile( g_pd3dDevice, strTexture, &g_pMeshTextures[i] ) ) ) { MessageBox(NULL, "Could not find texture map", "Meshes.exe", MB_OK); } } } } // Done with the material buffer pD3DXMtrlBuffer->Release(); //Shows you how to compute a bounding sphere LPDIRECT3DVERTEXBUFFER9 VertexBuffer = NULL; D3DXVECTOR3* Vertices = NULL; D3DXVECTOR3 Center; FLOAT Radius; DWORD FVFVertexSize = D3DXGetFVFVertexSize(g_pMesh->GetFVF()); g_pMesh->GetVertexBuffer(&VertexBuffer); VertexBuffer->Lock(0,0, (VOID**) &Vertices, D3DLOCK_DISCARD); D3DXComputeBoundingSphere(Vertices, g_pMesh->GetNumVertices(), FVFVertexSize, &Center, &Radius); VertexBuffer->Unlock(); VertexBuffer->Release(); return S_OK; } //----------------------------------------------------------------------------- // Name: Cleanup() // Desc: Releases all previously initialized objects //----------------------------------------------------------------------------- VOID Cleanup() { if( g_pMeshMaterials != NULL ) delete[] g_pMeshMaterials; if( g_pMeshTextures ) { for( DWORD i = 0; i < g_dwNumMaterials; i++ ) { if( g_pMeshTextures[i] ) g_pMeshTextures[i]->Release(); } delete[] g_pMeshTextures; } if( g_pMesh != NULL ) g_pMesh->Release(); if( g_pd3dDevice != NULL ) g_pd3dDevice->Release(); if( g_pD3D != NULL ) g_pD3D->Release(); } //----------------------------------------------------------------------------- // Name: SetupMatrices() // Desc: Sets up the world, view, and projection transform matrices. //----------------------------------------------------------------------------- VOID SetupMatrices() { // For our world matrix, we will just leave it as the identity D3DXMATRIXA16 matWorld; D3DXMatrixRotationY( &matWorld, timeGetTime()/1000.0f ); g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld ); // Set up our view matrix. A view matrix can be defined given an eye point, // a point to lookat, and a direction for which way is up. Here, we set the // eye five units back along the z-axis and up three units, look at the // origin, and define "up" to be in the y-direction. D3DXVECTOR3 vEyePt( 0.0f, 3.0f,-5.0f ); D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f ); D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f ); D3DXMATRIXA16 matView; D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec ); g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView ); // For the projection matrix, we set up a perspective transform (which // transforms geometry from 3D view space to 2D viewport space, with // a perspective divide making objects smaller in the distance). To build // a perpsective transform, we need the f