MFC+D3D

最新推荐文章于 2024-09-12 15:34:48 发布

转载最新推荐文章于 2024-09-12 15:34:48 发布 · 3.9k 阅读

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#mfc #parameters #float #construction #direct3d #processing

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本文介绍了如何使用MFC框架创建一个Direct3D9应用程序，详细阐述了从初始化到渲染的整个流程，并通过实时更新和绘制三维模型展示了应用程序的动态效果。

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1. 新建单文档类型的MFC应用程序

2. 添加三个lib文件：d3d9.lib d3dx9.lib winmm.lib

3. 在D3D9MFCView.h文件中添加如下代码：

包含头文件：#include <d3dx9.h> //88888

添加成员函数和成员变量：

//88888 private: HRESULT initD3D( HWND hwnd, int width, int height, bool windowed, D3DDEVTYPE deviceType); HRESULT setup(int width, int height); HRESULT cleanup(); public: HRESULT update(float timeDelta); HRESULT render(); private: IDirect3DDevice9* _device; D3DPRESENT_PARAMETERS _d3dpp; ID3DXMesh* _teapot; public: virtual void OnInitialUpdate(); afx_msg void OnSize(UINT nType, int cx, int cy); afx_msg BOOL OnEraseBkgnd(CDC* pDC); //88888

对应函数实现：

CD3D9MFCView::CD3D9MFCView():_device(0),_teapot(0) { // TODO: add construction code here ::ZeroMemory(&_d3dpp,sizeof(_d3dpp));//88888 } CD3D9MFCView::~CD3D9MFCView() { if (_teapot) _teapot->Release(); if(_device) _device->Release(); } HRESULT CD3D9MFCView::initD3D(HWND hwnd, int width, int height, bool windowed, D3DDEVTYPE deviceType) { HRESULT hr = 0; // Step 1: Create the IDirect3D9 object. IDirect3D9* d3d9 = 0; d3d9 = Direct3DCreate9(D3D_SDK_VERSION); if( !d3d9 ) { ::MessageBox(0, "Direct3DCreate9() - FAILED", 0, 0); return E_FAIL; } // Step 2: Check for hardware vp. D3DCAPS9 caps; d3d9->GetDeviceCaps(D3DADAPTER_DEFAULT, deviceType, &caps); int vp = 0; if( caps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT ) vp = D3DCREATE_HARDWARE_VERTEXPROCESSING; else vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING; // Step 3: Fill out the D3DPRESENT_PARAMETERS structure. _d3dpp.BackBufferWidth = width; _d3dpp.BackBufferHeight = height; _d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8; _d3dpp.BackBufferCount = 1; _d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE; _d3dpp.MultiSampleQuality = 0; _d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; _d3dpp.hDeviceWindow = hwnd; _d3dpp.Windowed = windowed; _d3dpp.EnableAutoDepthStencil = true; _d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8; _d3dpp.Flags = 0; _d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT; _d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE; // Step 4: Create the device. hr = d3d9->CreateDevice( D3DADAPTER_DEFAULT, // primary adapter deviceType, // device type hwnd, // window associated with device vp, // vertex processing &_d3dpp, // present parameters &_device); // return created device if( FAILED(hr) ) { // try again using a safer configuration. _d3dpp.AutoDepthStencilFormat = D3DFMT_D16; hr = d3d9->CreateDevice( D3DADAPTER_DEFAULT, deviceType, hwnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &_d3dpp, &_device); if( FAILED(hr) ) { d3d9->Release(); // done with d3d9 object ::MessageBox(0, "CreateDevice() - FAILED", 0, 0); return hr; } } d3d9->Release(); // done with d3d9 object return S_OK; } HRESULT CD3D9MFCView::setup(int width, int height) { if( _device ) { // Set view matrix. D3DXMATRIX V; D3DXVECTOR3 pos (0.0f, 0.0f, -6.0f); D3DXVECTOR3 target (0.0f, 0.0f, 0.0f); D3DXVECTOR3 up (0.0f, 1.0f, 0.0f); D3DXMatrixLookAtLH(&V, &pos, &target, &up); _device->SetTransform(D3DTS_VIEW, &V); // Create the teapot. if( !_teapot) D3DXCreateTeapot(_device, &_teapot, 0); // Use wireframe mode and turn off lighting. _device->SetRenderState(D3DRS_FILLMODE, D3DFILL_WIREFRAME); _device->SetRenderState(D3DRS_LIGHTING, false); // Size the viewport based on window dimensions. D3DVIEWPORT9 vp = {0, 0, width, height, 0.0f, 1.0f}; _device->SetViewport( &vp ); // Set the projection matrix based on the // window dimensions. D3DXMATRIX P; D3DXMatrixPerspectiveFovLH( &P, D3DX_PI * 0.25f,//45-degree field of view (float)width / (float)height, 1.0f, 1000.0f); _device->SetTransform(D3DTS_PROJECTION, &P); } return S_OK; } HRESULT CD3D9MFCView::cleanup() { // Nothing to Destroy. return S_OK; } HRESULT CD3D9MFCView::update(float timeDelta) { if( _device ) { // // Spin the teapot around the y-axis. // static float angle = 0.0f; D3DXMATRIX yRotationMatrix; D3DXMatrixRotationY(&yRotationMatrix, angle); _device->SetTransform(D3DTS_WORLD, &yRotationMatrix); angle += timeDelta; if(angle >= D3DX_PI * 2.0f) angle = 0.0f; } return S_OK; } HRESULT CD3D9MFCView::render() { if( _device ) { // // Draw the scene. // _device->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0); _device->BeginScene(); // Draw the teapot. _teapot->DrawSubset(0); _device->EndScene(); _device->Present(0, 0, 0, 0); } return S_OK; } void CD3D9MFCView::OnInitialUpdate() { CView::OnInitialUpdate(); // TODO: Add your specialized code here and/or call the base class CRect rect; GetClientRect(&rect); // Initialize Direct3D (e.g. acquire a IDirect3DDevice9 poniter). HRESULT hr = initD3D( GetSafeHwnd(), rect.right, rect.bottom, true, D3DDEVTYPE_HAL); if(FAILED(hr)) { MessageBox("initD3D() - Failed", "Error"); ::PostQuitMessage(0); } // Setup the application. hr = setup(rect.right, rect.bottom); if(FAILED(hr)) { MessageBox("setup() - Failed", "Error"); ::PostQuitMessage(0); } } void CD3D9MFCView::OnSize(UINT nType, int cx, int cy) { CView::OnSize(nType, cx, cy); // TODO: Add your message handler code here if( _device ) { HRESULT hr = 0; // On a resize we must change the dimensions of the // back buffers to match the new window size. _d3dpp.BackBufferWidth = cx; _d3dpp.BackBufferHeight = cy; // We are about to call Reset, free any resources // that need to be freed prior to a Reset. hr = cleanup(); if(FAILED(hr)) { MessageBox("destroy() - Failed", "Error"); ::PostQuitMessage(0); } // Reset the flipping chain with the new window dimensions. // Note that all device states are reset to the default // after this call. hr = _device->Reset(&_d3dpp); if(FAILED(hr)) { MessageBox("Reset() - Failed", "Error"); ::PostQuitMessage(0); } // Reinitialize resource and device states since we // Reset everything. hr = setup(cx, cy); if(FAILED(hr)) { MessageBox("setup() - Failed", "Error"); ::PostQuitMessage(0); } } } BOOL CD3D9MFCView::OnEraseBkgnd(CDC* pDC) { // TODO: Add your message handler code here and/or call default return FALSE; //return CView::OnEraseBkgnd(pDC); }

3. 在类CD3D9MFCApp中添加如下代码。

包含头文件：#include "mmsystem.h"//88888

添加重载函数：

BOOL CD3D9MFCApp::OnIdle(LONG lCount) { // TODO: Add your specialized code here and/or call the base class CWinApp::OnIdle(lCount); CWnd* mainFrame = AfxGetMainWnd(); CD3D9MFCView* cview = (CD3D9MFCView*)mainFrame->GetWindow(GW_CHILD); // Save last time. static float lastTime = (float)timeGetTime(); // Compute time now. float currentTime = (float)timeGetTime(); // Compute the difference: time elapsed in seconds. float deltaTime = (currentTime - lastTime) * 0.001f; // Last time is now current time. lastTime = currentTime; cview->update(deltaTime); cview->render(); return TRUE; //return CWinApp::OnIdle(lCount); }

效果如下：