dirctx9编程光照纹理_demo

//============================================================================ // Desc: 纹理阶段混合状态 //============================================================================ #include <d3dx9.h> //----------------------------------------------------------------------------- // Desc: 全局变量 //----------------------------------------------------------------------------- LPDIRECT3D9 g_pD3D = NULL; //Direct3D对象 LPDIRECT3DDEVICE9 g_pd3dDevice = NULL; //Direct3D设备对象 LPDIRECT3DVERTEXBUFFER9 g_pVB = NULL; //顶点缓冲区对象 LPDIRECT3DTEXTURE9 g_pTexture = NULL; //纹理对象 LPD3DXMESH g_pMesh = NULL; //网格模型对象 D3DMATERIAL9 * g_pMeshMaterials = NULL; //网格模型材质 LPDIRECT3DTEXTURE9* g_pMeshTextures = NULL; //网格模型纹理 DWORD g_dwNumMaterials = 0; //网格模型材质数量 //----------------------------------------------------------------------------- // Desc: 顶点结构 //----------------------------------------------------------------------------- struct CUSTOMVERTEX { D3DXVECTOR3 position; //顶点位置 D3DXVECTOR3 normal; //顶点法线 FLOAT tu, tv; //顶点纹理坐标 }; /*struct CUSTOMVERTEX { FLOAT x, y, z; //顶点位置 FLOAT u,v ; //顶点纹理坐标 }; */ #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_NORMAL|D3DFVF_TEX1) //----------------------------------------------------------------------------- // Desc: 设置变换矩阵 //----------------------------------------------------------------------------- VOID SetupMatrices() { //建立并设置世界矩阵 D3DXMATRIXA16 matWorld; D3DXMatrixIdentity( &matWorld ); g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld ); //建立并设置观察矩阵 D3DXVECTOR3 vEyePt( 8.0f, 12.0f,-8.0f ); D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 2.0f ); D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f ); D3DXMATRIXA16 matView; D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec ); g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView ); //建立并设置投影矩阵 D3DXMATRIXA16 matProj; D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f ); g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj ); } //----------------------------------------------------------------------------- // Desc: 初始化Direct3D //----------------------------------------------------------------------------- HRESULT InitD3D( HWND hWnd ) { //创建Direct3D对象, 该对象用于创建Direct3D设备对象 if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) ) return E_FAIL; //设置D3DPRESENT_PARAMETERS结构, 准备创建Direct3D设备对象 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; //创建Direct3D设备对象 if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pd3dDevice ) ) ) { return E_FAIL; } //设置渲染状态 g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE ); //剔除模式设置 g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE ); //启用深度测试 g_pd3dDevice->SetRenderState(D3DRS_SPECULARENABLE, TRUE); //启用镜面反射光照模型 //设置纹理渲染状态 g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE ); //默认设置 g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE ); g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE ); g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_DISABLE ); //设置纹理过滤方式 g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR ); g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR ); //设置变换矩阵 SetupMatrices(); return S_OK; } //----------------------------------------------------------------------------- // Desc: 设置材质和灯光 //----------------------------------------------------------------------------- VOID SetupLight() { //设置材质 D3DMATERIAL9 mtrl; ZeroMemory( &mtrl, sizeof(D3DMATERIAL9) ); mtrl.Ambient.r = 1.0f; mtrl.Ambient.g = 1.0f; mtrl.Ambient.b = 1.0f; mtrl.Ambient.a = 1.0f; mtrl.Diffuse.r = 1.0f; mtrl.Diffuse.g = 1.0f; mtrl.Diffuse.b = 1.0f; mtrl.Diffuse.a = 1.0f; mtrl.Specular.r = 0.9f; mtrl.Specular.g = 0.9f; mtrl.Specular.b = 0.9f; mtrl.Specular.a = 0.9f; mtrl.Power = 20.0f; g_pd3dDevice->SetMaterial( &mtrl ); g_pd3dDevice->SetRenderState(D3DRS_DIFFUSEMATERIALSOURCE, D3DMCS_MATERIAL); //设置灯光 D3DXVECTOR3 vecDir; D3DLIGHT9 light; ZeroMemory( &light, sizeof(D3DLIGHT9) ); light.Type = D3DLIGHT_DIRECTIONAL; light.Diffuse.r = 0.0f; light.Diffuse.g = 1.0f; light.Diffuse.b = 0.0f; vecDir = D3DXVECTOR3(0, -1.0f, 0); D3DXVec3Normalize( (D3DXVECTOR3*)&light.Direction, &vecDir ); light.Range = 1000.0f; g_pd3dDevice->SetLight( 0, &light ); //设置灯光2点光源，颜色为红色 D3DXVECTOR3 vecPos2; D3DLIGHT9 light2; ZeroMemory( &light2, sizeof(D3DLIGHT9) ); light2.Type = D3DLIGHT_POINT; light2.Diffuse.r = 1.0f; light2.Diffuse.g = 0.0f; light2.Diffuse.b = 0.0f; light2.Diffuse.a = 1.0f; light2.Specular.r = 1.0f; light2.Specular.g = 1.0f; light2.Specular.b = 1.0f; light2.Specular.a = 1.0f; light2.Position= D3DXVECTOR3(0,26,0); light2.Range = 26.0f; light2.Attenuation0 = 1.0f; g_pd3dDevice->SetLight( 1, &light2 ); g_pd3dDevice->SetRenderState( D3DRS_SPECULARENABLE, TRUE ); //3号光源为聚光源，颜色为红色 D3DLIGHT9 light3; ZeroMemory( &light3, sizeof(D3DLIGHT9) ); light3.Type = D3DLIGHT_SPOT; light3.Diffuse.r = 1.0f; light3.Diffuse.g = 1.0f; light3.Diffuse.b = 0.0f; light3.Position = D3DXVECTOR3(0,3,3.5); light3.Direction = D3DXVECTOR3(-0.8,-0.8,-0.24); light3.Theta = 0.06125; light3.Phi=0.25; light3.Falloff=0.1; light3.Range = 1000.0f; g_pd3dDevice->SetLight( 2, &light3 ); // g_pd3dDevice->LightEnable( 1, TRUE ); g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, TRUE ); //默认设置 //设置环境光 g_pd3dDevice->SetRenderState( D3DRS_AMBIENT, 0x00101010 ); } //----------------------------------------------------------------------------- // Desc: 创建场景图形(纹理和顶点缓冲区) //----------------------------------------------------------------------------- HRESULT InitGeometry() { LPD3DXBUFFER pD3DXMtrlBuffer; //存储网格模型材质的缓冲区对象 //从磁盘文件加载网格模型 if( FAILED( D3DXLoadMeshFromX( "sphere.x", D3DXMESH_MANAGED, g_pd3dDevice, NULL, &pD3DXMtrlBuffer, NULL, &g_dwNumMaterials, &g_pMesh ) ) ) { MessageBox(NULL, "Could not find sphere.x", "Mesh", MB_OK); return E_FAIL; } //从网格模型中提取材质属性和纹理文件名 D3DXMATERIAL* d3dxMaterials = (D3DXMATERIAL*)pD3DXMtrlBuffer->GetBufferPointer(); g_pMeshMaterials = new D3DMATERIAL9[g_dwNumMaterials]; if( g_pMeshMaterials == NULL ) return E_OUTOFMEMORY; g_pMeshTextures = new LPDIRECT3DTEXTURE9[g_dwNumMaterials]; if( g_pMeshTextures == NULL ) return E_OUTOFMEMORY; //逐块提取网格模型材质属性和纹理文件名 for( DWORD i=0; i<g_dwNumMaterials; i++ ) { //材料属性 g_pMeshMaterials[i] = d3dxMaterials[i].MatD3D; //设置模型�