Direct3D 初始化

工程包含了三個檔案,分别是 d3dUtility.h d3dUtility.cpp d3dInit.cpp

d3dUtility.h

#ifndef _d3dUtilityH_
#define _d3dUtilityH_

#include <d3dx9.h>
#include <string.h>

//初始化
bool InitD3D(HINSTANCE hInstance,int width,int height,bool windowed,
		D3DDEVTYPE deviceType,IDirect3DDevice9 **device);

int EnterMsgLoop(bool (*ptr_display)(float timeDelt));  //主事件循環

LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam);

template<class T> void Release(T t) //對象釋放
{
	if(t)
	{
		t->Release();
		t=0;
	}
}

template<class T> void Delete(T t) //删除對象
{
	if(t)
	{
		delete t;
		t=0;
	}
}

#endif

d3dUtility.cpp 實作了d3dUtility.h中聲明的方法

#include <Windows.h>
#include <memory>
#include "d3dUtility.h"

bool InitD3D(HINSTANCE hInstance,int width,int height,bool windowed,
				  D3DDEVTYPE deviceType,IDirect3DDevice9 **device)
{
	//建立視窗

	//Step 1 建立視窗類
	WNDCLASSEX wc={0};
	wc.style=CS_HREDRAW+CS_VREDRAW;
	wc.cbClsExtra=0;
	wc.cbSize=sizeof(WNDCLASSEX);
	wc.cbWndExtra=0;
	//wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
	wc.hbrBackground=GetSysColorBrush(COLOR_WINDOW);
	wc.hCursor=LoadCursor(NULL,IDC_ARROW);
	wc.hIcon=LoadIcon(NULL,IDI_WINLOGO);
	wc.hIconSm=wc.hIcon;
	wc.hInstance=hInstance;
	wc.lpfnWndProc=WndProc;
	wc.lpszClassName=L"d3d9";
	wc.lpszMenuName=NULL;

	//Step 2 注冊視窗類
	if(!RegisterClassEx(&wc))
	{
		MessageBox(0,L"RegisterClass()-FAILED",0,0);
		return false;
	}

	//視窗位置和大小
	RECT rc={0,0,640,480};

	/*RECT rc={GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN),
	640,480};  GetSystemMetrics(SM_CXSCREEN) 擷取螢幕寬度 */

	AdjustWindowRect(&rc,WS_OVERLAPPEDWINDOW,false);

	//Step 3 建立視窗
	HWND hwnd=CreateWindowA("d3d9","D3D Game Development!",WS_EX_TOPMOST|WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,
		CW_USEDEFAULT,rc.right-rc.left,rc.bottom-rc.top,NULL,NULL,hInstance,NULL);

	if(!hwnd)
	{
		MessageBox(0,L"CreateWindowA()-FAILED",0,0);
		return false;
	}

	//Step 4 顯示及更新視窗
	ShowWindow(hwnd,SW_SHOW);
	UpdateWindow(hwnd);

//初始化D3D
	
	//Step 1 建立Idirec3D9對象
	HRESULT hr=0;
	
	IDirect3D9 *d3d9=0;
	d3d9=Direct3DCreate9(D3D_SDK_VERSION);

	if(!d3d9)
		return false;

	//Step 2 檢查裝置性能
	D3DCAPS9 caps;
	d3d9->GetDeviceCaps(D3DADAPTER_DEFAULT,deviceType,&caps);

	int vp;
	if(caps.DevCaps&D3DDEVCAPS_HWTRANSFORMANDLIGHT)
		vp=D3DCREATE_HARDWARE_VERTEXPROCESSING;
	else
		vp=D3DCREATE_SOFTWARE_VERTEXPROCESSING;

	//Step 3 填充結構D3DPRESENT_PARAMETERS
	D3DPRESENT_PARAMETERS d3dpp;
	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 建立IDirect3DDevice9
	hr=d3d9->CreateDevice(D3DADAPTER_DEFAULT,deviceType,
		hwnd,vp,&d3dpp,device);

	if(FAILED(hr))
	{
		d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
		hr=d3d9->CreateDevice(D3DADAPTER_DEFAULT,deviceType,
			hwnd,vp,&d3dpp,device);

		if(FAILED(hr))
		{
			d3d9->Release();
			MessageBox(0,L"CreateDevice()-FAILED",0,0);
			return false;
		}		
	}

	d3d9->Release(); //釋放d3d9對象
	return true;
}

int EnterMsgLoop(bool (*ptr_display)(float timeDelta)) //主事件循環
{
	MSG msg;
	ZeroMemory(&msg,sizeof(MSG));

	static float lastTime=float(timeGetTime());

	while (msg.message!=WM_QUIT)
	{
		if(PeekMessage(&msg,0,0,0,PM_REMOVE))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		else
		{
			float currTime=float(timeGetTime());
			float timeDelta=(currTime-lastTime)*0.001f;

			ptr_display(timeDelta);
	
			lastTime=currTime;
		}
	}

	return static_cast<int>(msg.wParam);
}

d3dInit.cpp

#include <Windows.h>
#include <memory>
#include "d3dUtility.h"

bool InitD3D(HINSTANCE hInstance,int width,int height,bool windowed,
				  D3DDEVTYPE deviceType,IDirect3DDevice9 **device)
{
	//建立視窗

	//Step 1 建立視窗類
	WNDCLASSEX wc={0};
	wc.style=CS_HREDRAW+CS_VREDRAW;
	wc.cbClsExtra=0;
	wc.cbSize=sizeof(WNDCLASSEX);
	wc.cbWndExtra=0;
	//wc.hbrBackground=(HBRUSH)(COLOR_WINDOW+1);
	wc.hbrBackground=GetSysColorBrush(COLOR_WINDOW);
	wc.hCursor=LoadCursor(NULL,IDC_ARROW);
	wc.hIcon=LoadIcon(NULL,IDI_WINLOGO);
	wc.hIconSm=wc.hIcon;
	wc.hInstance=hInstance;
	wc.lpfnWndProc=WndProc;
	wc.lpszClassName=L"d3d9";
	wc.lpszMenuName=NULL;

	//Step 2 注冊視窗類
	if(!RegisterClassEx(&wc))
	{
		MessageBox(0,L"RegisterClass()-FAILED",0,0);
		return false;
	}

	//視窗位置和大小
	RECT rc={0,0,640,480};

	/*RECT rc={GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN),
	640,480};  GetSystemMetrics(SM_CXSCREEN) 擷取螢幕寬度 */

	AdjustWindowRect(&rc,WS_OVERLAPPEDWINDOW,false);

	//Step 3 建立視窗
	HWND hwnd=CreateWindowA("d3d9","D3D Game Development!",WS_EX_TOPMOST|WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,
		CW_USEDEFAULT,rc.right-rc.left,rc.bottom-rc.top,NULL,NULL,hInstance,NULL);

	if(!hwnd)
	{
		MessageBox(0,L"CreateWindowA()-FAILED",0,0);
		return false;
	}

	//Step 4 顯示及更新視窗
	ShowWindow(hwnd,SW_SHOW);
	UpdateWindow(hwnd);


	//初始化D3D
	
	//Step 1 建立Idirec3D9對象
	HRESULT hr=0;
	
	IDirect3D9 *d3d9=0;
	d3d9=Direct3DCreate9(D3D_SDK_VERSION);

	if(!d3d9)
		return false;

	//Step 2 檢查裝置性能
	D3DCAPS9 caps;
	d3d9->GetDeviceCaps(D3DADAPTER_DEFAULT,deviceType,&caps);

	int vp;
	if(caps.DevCaps&D3DDEVCAPS_HWTRANSFORMANDLIGHT)
		vp=D3DCREATE_HARDWARE_VERTEXPROCESSING;
	else
		vp=D3DCREATE_SOFTWARE_VERTEXPROCESSING;

	//Step 3 填充結構D3DPRESENT_PARAMETERS
	D3DPRESENT_PARAMETERS d3dpp;
	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 建立IDirect3DDevice9
	hr=d3d9->CreateDevice(D3DADAPTER_DEFAULT,deviceType,
		hwnd,vp,&d3dpp,device);

	if(FAILED(hr))
	{
		d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
		hr=d3d9->CreateDevice(D3DADAPTER_DEFAULT,deviceType,
			hwnd,vp,&d3dpp,device);

		if(FAILED(hr))
		{
			d3d9->Release();
			MessageBox(0,L"CreateDevice()-FAILED",0,0);
			return false;
		}		
	}

	d3d9->Release(); //釋放d3d9對象
	return true;
}

int EnterMsgLoop(bool (*ptr_display)(float timeDelta)) //主事件循環
{
	MSG msg;
	ZeroMemory(&msg,sizeof(MSG));

	static float lastTime=float(timeGetTime());

	while (msg.message!=WM_QUIT)
	{
		if(PeekMessage(&msg,0,0,0,PM_REMOVE))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
		else
		{
			float currTime=float(timeGetTime());
			float timeDelta=(currTime-lastTime)*0.001f;

			ptr_display(timeDelta);
	
			lastTime=currTime;
		}
	}

	return static_cast<int>(msg.wParam);
}

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