Shaders for Game Programmers and Artists代码实现Chapter_0401

  《Shaders for Game Programmers and Artists》是一本介绍shader很好的书籍，书中使用RenderMonkey给出了shader源代码，该系列文章将通过Effect的方式在VS2008环境下实现所有例子源代码，如无特殊声明，开发环境为VS2008+DirectXSDK(March 2009).书中用到的茶壶模型为Microsoft DirectX SDK (March 2009)/Samples/Media/misc目录下的teapot.x

   #include <d3dx9.h> //----------------------------------------------------------------------------- // Desc: 全局变量 //----------------------------------------------------------------------------- LPDIRECT3D9 g_pD3D = NULL; //Direct3D对象 LPDIRECT3DDEVICE9 g_pd3dDevice = NULL; //Direct3D设备对象 LPD3DXMESH g_pMeshTeapot = NULL; //网格模型对象 D3DMATERIAL9* g_pMeshTeapotMaterials = NULL; //网格模型材质 LPDIRECT3DTEXTURE9* g_pMeshTeapotTextures = NULL; //网格模型纹理 DWORD g_dwTeapotNumMaterials = 0L; //网格模型材质数量 ID3DXEffect* g_pEffect = NULL; //效果指针 //常量句柄 D3DXHANDLE hWVPMatrixHandle = NULL; //变换矩阵 D3DXHANDLE hTech0 = NULL; //技术句柄 //----------------------------------------------------------------------------- // Desc: 设置世界矩阵 //----------------------------------------------------------------------------- VOID SetWorldMatrix() { //创建并设置世界矩阵 D3DXMATRIXA16 matWorld; D3DXMatrixRotationX( &matWorld, -D3DX_PI / 5.0 ); g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld ); } //----------------------------------------------------------------------------- // Desc: 设置观察矩阵和投影矩阵 //----------------------------------------------------------------------------- VOID SetViewAndProjMatrix() { //创建并设置观察矩阵 D3DXVECTOR3 vEyePt( 0.0f, 0.0f,-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 ); //创建并设置投影矩阵 D3DXMATRIXA16 matProj; D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f ); g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj ); } //-----------------------------------------------------