VC做的简单图形dX例子

#include <d3d9.h> //创建全局对象 LPDIRECT3D9 g_pD3D = NULL; LPDIRECT3DDEVICE9 g_pd3dDevice = NULL; LPDIRECT3DVERTEXBUFFER9 g_pVB =NULL; int g_iType=1;//图元类型 //定点结构 struct CUSTOMVERTEX { FLOAT x,y,z,rhw; DWORD color; }; #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZRHW|D3DFVF_DIFFUSE) //初始化D3D HRESULT Init3D(HWND hwnd) { if(NULL==(g_pD3D=Direct3DCreate9(D3D_SDK_VERSION))) return E_FAIL; D3DPRESENT_PARAMETERS d3dpp; ZeroMemory(&d3dpp,sizeof(d3dpp)); d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.BackBufferFormat = D3DFMT_UNKNOWN; if(FAILED(g_pD3D->CreateDevice(D3DADAPTER_DEFAULT,D3DDEVTYPE_HAL,hwnd,D3DCREATE_SOFTWARE_VERTEXPROCESSING,&d3dpp,&g_pd3dDevice))) { return E_FAIL; } //设置剔除模式为不剔除任何面 g_pd3dDevice->SetRenderState(D3DRS_CULLMODE,D3DCULL_NONE); //设置图元填充模式为线框模式 g_pd3dDevice->SetRenderState(D3DRS_FILLMODE,D3DFILL_WIREFRAME); return S_OK; } //创建并填充顶点缓冲区 HRESULT InitVB() { CUSTOMVERTEX vertices[]={\ { 50.0f,250.0f,0.5f,1.0f,0xffff0000, },\ {150.0f, 50.0f,0.5f,1.0f,0xffff0000, },\ {250.0f,250.0f,0.5f,1.0f,0xffff0000, },\ {350.0f, 50.0f,0.5f,1.0f,0xffff0000, },\ {450.0f,250.0f,0.5f,1.0f,0xffff0000, },\ {550.0f, 50.0f,0.5f,1.0f,0xffff0000, }\ }; if(FAILED(g_pd3dDevice->CreateVertexBuffer(6*sizeof(CUSTOMVERTEX),0,D3DFVF_CUSTOMVERTEX,D3DPOOL_DEFAULT,&g_pVB,NULL))) return E_FAIL; VOID *pVertices; if(FAILED(g_pVB->Lock(0,sizeof(vertices),(void**)&pVertices,0))) return E_FAIL; memcpy(pVertices,vertices,sizeof(vertices)); g_pVB->Unlock(); return S_OK; } //释放创建的对象 VOID Cleanup() { if(g_pVB!=NULL) g_pVB->Release(); if(g_pd3dDevice!=NULL) g_pd3dDevice->Release(); if(g_pD3D!=NULL) g_pD3D->Release(); } //渲染对象 VOID Render() { //清空后台缓冲区 g_pd3dDevice->Clear(0,NULL,D3DCLEAR_TARGET,D3DCOLOR_XRGB(45,50,170),1.0f,0); if(SUCCEEDED(g_pd3dDevice->BeginScene() )) { //在后台缓冲区绘制图形 g_pd3dDevice->SetStreamSource(0,g_pVB,0,sizeof(CUSTOMVERTEX)); g_pd3dDevice->SetFVF(D3DFVF_CUSTOMVERTEX); switch(g_iType) { case 1://三角条带 //g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,4);//指定顶点渲染的序列孤立的三角形 g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP,0,4);//作为一个单一的顶点渲染折线 break; case 2://三角形列表 g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,2); break; case 3://线段条带 g_pd3dDevice->DrawPrimitive(D3DPT_LINESTRIP,0,5); break; case 4://线段列表 g_pd3dDevice->DrawPrimitive(D3DPT_LINELIST,0,3); break; case 5://点列表 g_pd3dDevice->DrawPrimitive(D3DPT_POINTLIST,0,6); break; case 6://三角扇形 g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLEFAN,0,4); break; default: break; } // g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST,0,1);//三角形 g_pd3dDevice->EndScene(); } g_pd3dDevice->Present(NULL,NULL,NULL,NULL); } //消息处理 LRESULT WINAPI MsgProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam) { switch(msg) { case WM_DESTROY: Cleanup(); PostQuitMessage(0);//该函数向系统表明有个线程有终止请求。通常用来响应WM_DESTROY消息 return 0; case WM_KEYDOWN: switch(wParam)//设置渲染图元类型 { case 49://1键 case 50://2键 case 51://3键 case 52://4键 case 53://5键 case 54://6键 g_iType=(int)wParam-48;//ASCII码转换 break; } } return DefWindowProc(hwnd,msg,wParam,lParam); } int main(HINSTANCE hInst,HINSTANCE,LPSTR,INT) { //注册窗口类 WNDCLASSEX wc = {sizeof(WNDCLASSEX),CS_CLASSDC,MsgProc,0L,0L,GetModuleHandle(NULL),NULL,NULL,NULL,NULL,"ClassName",NULL}; RegisterClassEx( &wc ); //创建窗口 HWND hwnd=CreateWindow("ClassName","基本图元",WS_OVERLAPPEDWINDOW,100,100,600,300,NULL,NULL,wc.hInstance,NULL); //初始化D3D if(SUCCEEDED(Init3D(hwnd))) { if(SUCCEEDED(InitVB())) { //显示窗口 ShowWindow(hwnd,SW_SHOWDEFAULT); UpdateWindow(hwnd); //进入消息循环 MSG msg; ZeroMemory(&msg,sizeof(msg)); while(msg.message!=WM_QUIT) { if(PeekMessage(&msg,NULL,0U,0U,PM_REMOVE)) { TranslateMessage(&msg); DispatchMessage(&msg); } else { Render();//渲染图形 } } } } UnregisterClass("ClassName",wc.hInstance); return 0; }