DirectX 9.0 3d 初始程序框架

最新推荐文章于 2018-11-03 13:26:01 发布

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#框架 #direct3d #parameters #application #float #initialization

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本文介绍了一个基于DirectX9.0的3D游戏开发框架初始化过程，包括创建Direct3D设备、窗口消息循环及屏幕清除等关键步骤。

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这个是《DirectX 9.0 3D游戏开发编程基础》上第二章的的框架，很有参考意义，框架分3个文件，主逻辑在

d3dInit.cpp中。

//////////////////////////////////////////////////////////////////////////////////////////////////

// File: d3dUtility.h

// System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0

// Desc: Provides utility functions for simplifying common tasks.

//////////////////////////////////////////////////////////////////////////////////////////////////

#ifndef __d3dUtilityH__

#define __d3dUtilityH__

#include <d3dx9.h>

#include <string>

#include <tchar.h>

using namespace std;

namespace d3d

{

bool InitD3D(

HINSTANCE hInstance, // [in] Application instance.

int width, int height, // [in] Backbuffer dimensions.

bool windowed, // [in] Windowed (true)or full screen (false).

D3DDEVTYPE deviceType, // [in] HAL or REF

IDirect3DDevice9** device);// [out]The created device.

int EnterMsgLoop(

bool (*ptr_display)(float timeDelta));

LRESULT CALLBACK WndProc(

HWND hwnd,

UINT msg,

WPARAM wParam,

LPARAM lParam);

template<class T> void Release(T t)

{

if( t )

{

t->Release();

t = 0;

}

template<class T> void Delete(T t)

{

if( t )

{

delete t;

t = 0;

}

#endif // __d3dUtilityH__

//////////////////////////////////////////////////////////////////////////////////////////////////

// File: d3dUtility.cpp

// System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0

// Desc: Provides utility functions for simplifying common tasks.

//////////////////////////////////////////////////////////////////////////////////////////////////

#include "d3dUtility.h"

bool d3d::InitD3D(

HINSTANCE hInstance,

int width, int height,

bool windowed,

D3DDEVTYPE deviceType,

IDirect3DDevice9** device)

{

// Create the main application window.

WNDCLASS wc;

wc.style = CS_HREDRAW | CS_VREDRAW;

wc.lpfnWndProc = (WNDPROC)d3d::WndProc;

wc.cbClsExtra = 0;

wc.cbWndExtra = 0;

wc.hInstance = hInstance;

wc.hIcon = LoadIcon(0, IDI_APPLICATION);

wc.hCursor = LoadCursor(0, IDC_ARROW);

wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);

wc.lpszMenuName = 0;

wc.lpszClassName = _T("Direct3D9App");

if( !RegisterClass(&wc) )

{

::MessageBox(0, _T("RegisterClass() - FAILED"), 0, 0);

return false;

}

HWND hwnd = 0;

hwnd = ::CreateWindow(_T("Direct3D9App"), _T("Direct3D9App"),

WS_EX_TOPMOST,

0, 0, width, height,

0 /*parent hwnd*/, 0 /* menu */, hInstance, 0 /*extra*/);

if( !hwnd )

{

::MessageBox(0, _T("CreateWindow() - FAILED"), 0, 0);

return false;

}

::ShowWindow(hwnd, SW_SHOW);

::UpdateWindow(hwnd);

// Init D3D:

HRESULT hr = 0;

// Step 1: Create the IDirect3D9 object.

IDirect3D9* d3d9 = 0;

d3d9 = Direct3DCreate9(D3D_SDK_VERSION);

if( !d3d9 )

{

::MessageBox(0, _T("Direct3DCreate9() - FAILED"), 0, 0);

return false;

}

// 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.

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: 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 16-bit depth buffer

d3dpp.AutoDepthStencilFormat = D3DFMT_D16;

hr = d3d9->CreateDevice(

D3DADAPTER_DEFAULT,

deviceType,

hwnd,

vp,

&d3dpp,

device);

if( FAILED(hr) )

{

d3d9->Release(); // done with d3d9 object

::MessageBox(0, _T("CreateDevice() - FAILED"), 0, 0);

return false;

}

d3d9->Release(); // done with d3d9 object

return true;

}

int d3d::EnterMsgLoop( bool (*ptr_display)(float timeDelta) )

{

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 msg.wParam;

}

//////////////////////////////////////////////////////////////////////////////////////////////////

// File: d3dinit.cpp

// System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0

// Desc: Demonstrates how to initialize Direct3D, how to use the book's framework

// functions, and how to clear the screen to black. Note that the Direct3D

// initialization code is in the d3dUtility.h/.cpp files.

//////////////////////////////////////////////////////////////////////////////////////////////////

#include "d3dUtility.h"

// Globals

IDirect3DDevice9* Device = 0;

// Framework Functions

bool Setup()