#include <d3dx9.h>LPDIRECT3D9 g_pD3D = NULL;
LPDIRECT3DDEVICE9 g_pD3DDevice = NULL;LPDIRECT3DVERTEXBUFFER9 g_pVertexBuffer = NULL; // 顶点bufferstruct CUSTOMVERTEX
{ FLOAT x, y, z; DWORD colour;};#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE)
#define SafeRelease(pObject) if(pObject != NULL) {pObject->Release(); pObject=NULL;}HRESULT InitialiseD3D(HWND hWnd)
{ //首先创建主要的D3D对象.如果创建成功我们将会得到一个指向IDirect3D9接口的指针 g_pD3D = Direct3DCreate9(D3D_SDK_VERSION); if(g_pD3D == NULL) { return E_FAIL; }//获取当前的显示模式
D3DDISPLAYMODE d3ddm; if(FAILED(g_pD3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm))) { return E_FAIL; }//创建一个结构来保存我们设备的设置
D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp, sizeof(d3dpp));//填充结构体
//我们想让我们的程序窗口化,并且设置了后缓冲的格式以匹配我们当前的显示模式 d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_COPY; d3dpp.PresentationInterval=D3DPRESENT_INTERVAL_DEFAULT; d3dpp.BackBufferFormat = d3ddm.Format;//创建一个Direct3D设备.
if(FAILED(g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pD3DDevice))) { return E_FAIL; }//开启背面拣选.因为我们想要隐藏多边形的背面
g_pD3DDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);//关闭灯光因为我们指定我们的顶点具有颜色
g_pD3DDevice->SetRenderState(D3DRS_LIGHTING, FALSE);return S_OK;
}HRESULT InitialiseVertexBuffer()
{ VOID* pVertices;//存储立方体的每一个顶点和它的颜色
//确保多边形的顶点是按顺时针方向给定的 //这是因为逆时针的面将要被拣选 //我们将使用1个三角形带来渲染这些多边形(顶,边,底) CUSTOMVERTEX cvVertices[] = { //顶面 {-5.0f, 5.0f, -5.0f, D3DCOLOR_XRGB(0, 0, 255),}, //Vertex 0 - Blue {-5.0f, 5.0f, 5.0f, D3DCOLOR_XRGB(255, 0, 0),}, //Vertex 1 - Red {5.0f, 5.0f, -5.0f, D3DCOLOR_XRGB(255, 0, 0),}, //Vertex 2 - Red {5.0f, 5.0f, 5.0f, D3DCOLOR_XRGB(0, 255, 0),}, //Vertex 3 - Green //面 1
{-5.0f, -5.0f, -5.0f, D3DCOLOR_XRGB(255, 0, 0),}, //Vertex 4 - Red {-5.0f, 5.0f, -5.0f, D3DCOLOR_XRGB(0, 0, 255),}, //Vertex 5 - Blue {5.0f, -5.0f, -5.0f, D3DCOLOR_XRGB(0, 255, 0),}, //Vertex 6 - Green {5.0f, 5.0f, -5.0f, D3DCOLOR_XRGB(255, 0, 0),}, //Vertex 7 - Red //面 2
{5.0f, -5.0f, 5.0f, D3DCOLOR_XRGB(0, 0, 255),}, //Vertex 8 - Blue {5.0f, 5.0f, 5.0f, D3DCOLOR_XRGB(0, 255, 0),}, //Vertex 9 - Green//面 3
{-5.0f, -5.0f, 5.0f, D3DCOLOR_XRGB(0, 255, 0),}, //Vertex 10 - Green {-5.0f, 5.0f, 5.0f, D3DCOLOR_XRGB(255, 0, 0),}, //Vertex 11 - Red //面 4
{-5.0f, -5.0f, -5.0f, D3DCOLOR_XRGB(255, 0, 0),}, //Vertex 12 - Red {-5.0f, 5.0f, -5.0f, D3DCOLOR_XRGB(0, 0, 255),}, //Vertex 13 - Blue//底面
{5.0f, -5.0f, -5.0f, D3DCOLOR_XRGB(0, 255, 0),}, //Vertex 14 - Green {5.0f, -5.0f, 5.0f, D3DCOLOR_XRGB(0, 0, 255),}, //Vertex 15 - Blue {-5.0f, -5.0f, -5.0f, D3DCOLOR_XRGB(255, 0, 0),}, //Vertex 16 - Red {-5.0f, -5.0f, 5.0f, D3DCOLOR_XRGB(0, 255, 0),}, //Vertex 17 - Green };//由我们的设备创建顶点buffer
if(FAILED(g_pD3DDevice->CreateVertexBuffer(18 * sizeof(CUSTOMVERTEX), 0, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVertexBuffer,NULL))) { return E_FAIL; } //得到一个指向顶点缓冲顶点的指针并锁定顶点缓冲 if(FAILED(g_pVertexBuffer->Lock(0, sizeof(cvVertices), (void**)&pVertices, 0))) { return E_FAIL; }//将我们存储的顶点值拷贝到顶点缓冲
memcpy(pVertices, cvVertices, sizeof(cvVertices));//解锁顶点缓冲
g_pVertexBuffer->Unlock();return S_OK;
}void SetupRotation(){ //这里我们将要沿着x,y,z轴选择我们的世界 D3DXMATRIX matWorld, matWorldX, matWorldY, matWorldZ;//创建变换矩阵
D3DXMatrixRotationX(&matWorldX, timeGetTime()/400.0f); D3DXMatrixRotationY(&matWorldY, timeGetTime()/400.0f); D3DXMatrixRotationZ(&matWorldZ, timeGetTime()/400.0f); //通过相乘合并变换
D3DXMatrixMultiply(&matWorld, &matWorldX, &matWorldY); D3DXMatrixMultiply(&matWorld, &matWorld, &matWorldZ);//应用变换
g_pD3DDevice->SetTransform(D3DTS_WORLD, &matWorld);}void SetupCamera()
{ //这里我们设置摄影机 //摄影机有3个设置: "摄影机位置", "观察点位置" and "Up Direction" //我们设置如下: //摄影机位置: (0, 0, -30) //观察点位置: (0, 0, 0) //Up direction: Y-Axis. D3DXMATRIX matView; D3DXMatrixLookAtLH(&matView, &D3DXVECTOR3(0.0f, 0.0f,-30.0f), //摄影机位置 &D3DXVECTOR3(0.0f, 0.0f, 0.0f), //观察点位置 &D3DXVECTOR3(0.0f, 1.0f, 0.0f)); //Up Direction g_pD3DDevice->SetTransform(D3DTS_VIEW, &matView);}void SetupPerspective()
{ //这里我们设置视野,纵横比例,远近截面 D3DXMATRIX matProj; D3DXMatrixPerspectiveFovLH(&matProj, D3DX_PI/4, 1.0f, 1.0f, 500.0f); g_pD3DDevice->SetTransform(D3DTS_PROJECTION, &matProj);}void Render(){ if(g_pD3DDevice == NULL) { return; }//清除后缓冲为黑色
g_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 0, 0), 1.0f, 0);//场景开始
g_pD3DDevice->BeginScene();//设置旋转,摄影机和透视矩阵
SetupRotation(); SetupCamera(); SetupPerspective(); //渲染我们的对象 g_pD3DDevice->SetStreamSource(0, g_pVertexBuffer,0, sizeof(CUSTOMVERTEX)); g_pD3DDevice->SetFVF(D3DFVF_CUSTOMVERTEX); g_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2); //顶 g_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 4, 8); //侧 g_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, 14, 2); //底//场景结束
g_pD3DDevice->EndScene();//翻动前后缓冲以便后缓冲中渲染的一切能够显示在屏幕（前缓冲）上。
g_pD3DDevice->Present(NULL, NULL, NULL, NULL);}void CleanUp()
{ SafeRelease(g_pVertexBuffer); SafeRelease(g_pD3DDevice); SafeRelease(g_pD3D);}void GameLoop()
{ //进入游戏循环 MSG msg; BOOL fMessage;PeekMessage(&msg, NULL, 0U, 0U, PM_NOREMOVE);
while(msg.message != WM_QUIT)
{ fMessage = PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE);if(fMessage)
{ //处理消息 TranslateMessage(&msg); DispatchMessage(&msg); } else { //没有要处理的消息,所以渲染当前场景 Render(); }}
}//窗口消息处理
LRESULT WINAPI WinProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){ switch(msg) { case WM_DESTROY: PostQuitMessage(0); return 0; break; case WM_KEYUP: switch (wParam) { case VK_ESCAPE: //用户已经按了ESC键，所以退出 DestroyWindow(hWnd); return 0; break; } break;}
return DefWindowProc(hWnd, msg, wParam, lParam);
}//应用程序入口点
INT WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, INT){ //注册窗口类 WNDCLASSEX wc = {sizeof(WNDCLASSEX), CS_CLASSDC, WinProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, "DX Project 3", NULL}; RegisterClassEx(&wc);//创建应用程序的窗口
HWND hWnd = CreateWindow("DX Project 3", "www.andypike.com: Tutorial 3", WS_OVERLAPPEDWINDOW, 50, 50, 500, 500, GetDesktopWindow(), NULL, wc.hInstance, NULL);//初始化 Direct3D
if(SUCCEEDED(InitialiseD3D(hWnd))) { //显示我们的窗体 ShowWindow(hWnd, SW_SHOWDEFAULT); UpdateWindow(hWnd);//初始化顶点缓冲
if(SUCCEEDED(InitialiseVertexBuffer())) { //启动游戏运行:进入游戏循环 GameLoop(); } }CleanUp();
UnregisterClass("DX Project 3", wc.hInstance);
return 0;
}
