DirextX编程

开发平台：
Visual C++

Mipmap.cpp：源码内容
							// Mipmap.cpp : Defines the class behaviors for the application.
#include "stdafx.h"
#include "Mipmap.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
const bool	g_bFullScreen
#ifdef _DEBUG
	= false;	// true;
#else
	= true;	// false;
#endif	// _DEBUG
const bool	g_bUseZBuffer = false;
const DWORD	g_dwWidth = 640;	// 800;	// 1024;
const DWORD	g_dwHeight = 480;	// 600;	// 768;
const DWORD	g_dwBPP = 16;	// 32;
const bool	g_bUseVoodoo12 = false;	// true;
const _GUID* const	g_lpGuidD3DDevice
	= NULL;
//	= &IID_IDirect3DTnLHalDevice;
//	= &IID_IDirect3DRGBDevice;
//	= &IID_IDirect3DHALDevice;
//	= &IID_IDirect3DRefDevice;
D3DVERTEX	g_Mesh[4];	// Rendering vertices
CMipmapApp::CMipmapApp(void)
{
	m_dwAppInitFlags &= ~CDirectXApp::DXAPPIF_DD;
	m_dwAppInitFlags |= CDirectXApp::DXAPPIF_D3DIM;
	SetFullScreen(g_bFullScreen);
	SetPackFileName(_T("Data"), _T("gui"));
	// Called during initial app startup, this function
	// performs all the permanent initialization.
	m_pD3DDevice = NULL;
	m_pD3DMaterial = NULL;
	// add your permanent init code here !
}
// Called before the app exits, this function gives the app
// the chance to cleanup after itself.
CMipmapApp::~CMipmapApp()
{
	// add your cleaup code here !
}
bool	CMipmapApp::GetDXInitSettings(void)
{
	if (m_pDirectSound != NULL)
	{
		if (m_pDirectSound->SelectDSDriver(0) == false)
			return  false;
	}
	if (m_pDirectMusic != NULL)
	{
		if (m_pDirectMusic->SelectDefaultDMusPort() == false)
			return  false;
	}
	if ((g_bUseVoodoo12 == false)
		|| m_pDirectDraw->SelectDDDevice(0, 1) == false)
	{
		if (m_pDirectDraw->SelectDDDevice(0) == false)
			return  false;
	}
	if (g_bUseZBuffer)
		m_dwDDInitFlags |= CDDDevice::D3DIF_ZBUFFER;
	if (GetFirstDDDevice()->IsCanRenderWindowed() == false)
	{
		m_dwDDInitFlags &= ~CDDDevice::DDIF_WINDOWED;
		m_dwDDInitFlags &= ~CDDDevice::DDIF_NO_FLIP;
	}
	else
	{
		m_dwDDInitFlags |= CDDDevice::DDIF_NO_FLIP;
	}
	if (g_lpGuidD3DDevice == NULL)
	{
		if (GetFirstDDDevice()->SelectDefaultD3DDevice() == false)
			return  false;
	}
	else
	{
		if (GetFirstDDDevice()->SelectD3DDevice(g_lpGuidD3DDevice) == false)
			return  false;
	}
	if (GetFirstDDDevice()->SelectDisplayMode(
		IsFullScreen(), g_dwWidth, g_dwHeight, g_dwBPP) == false)
		return  false;
	return  true;
}
// Called during device intialization, this code checks the device
// for some minimum set of capabilities, Initialize scene objects.
bool	CMipmapApp::InitDXObjects(void)
{
	m_pD3DDevice = GetFirstD3DDevice();
	ASSERT(m_pD3DDevice != NULL);
	m_pD3DMaterial = m_pD3DDevice->GetD3DMaterial();
	// add your init code here !
	// Check Texture modes for MIPLINEAR MipMapping
	if (!(m_pD3DDevice->GetTriCaps()->dwTextureFilterCaps & D3DPTFILTERCAPS_LINEARMIPLINEAR))
		return  false;
	// Create the mipmaps (loads bitmaps from "brickN.bmp" files)
	m_pBrickTexture = new  CD3DTexture;
	if (m_pBrickTexture->Create(m_pD3DDevice, _T("BRICK"), m_pPackFileManager, 0, 0) == false)
	{
		return  false;
	}
	// Initialize mesh used to render the mipmaps
	g_Mesh[0] = D3DVERTEX(D3DVECTOR(-1,-1, 0), D3DVECTOR(0,0,1), 0.0f, 1.0f);
	g_Mesh[1] = D3DVERTEX(D3DVECTOR(-1, 1, 0), D3DVECTOR(0,0,1), 0.0f, 0.0f);
	g_Mesh[2] = D3DVERTEX(D3DVECTOR( 1,-1, 0), D3DVECTOR(0,0,1), 1.0f, 1.0f);
	g_Mesh[3] = D3DVERTEX(D3DVECTOR( 1, 1, 0), D3DVECTOR(0,0,1), 1.0f, 0.0f);
	m_pD3DMaterial->SetColor(1.0f, 1.0f, 1.0f, 0.0f);
	m_pD3DMaterial->Set();
	// Build the mipmap device surfaces and textures.
	m_pBrickTexture->SetAsCurrent();
	m_pD3DDevice->SetTextureStageState(0, D3DTSS_MINFILTER, D3DTFN_LINEAR);
	m_pD3DDevice->SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTFG_LINEAR);
	m_pD3DDevice->SetRenderState(D3DRENDERSTATE_DITHERENABLE, TRUE);
	m_pD3DDevice->SetRenderState(D3DRENDERSTATE_SPECULARENABLE, FALSE);
	// Set the transform matrices.
	CD3DMatrix	matProj;
	matProj.SetProjection(1.57f, 1.0f, 1.0f, 100.0f);
	m_pD3DDevice->SetTransform(D3DTRANSFORMSTATE_PROJECTION, &matProj);
	// This simple sample uses only ambient light
	m_pD3DDevice->SetRenderState(D3DRENDERSTATE_AMBIENT, 0xFFFFFFFFL);
	return  true;
}
// Called when the app is exitting, or the device is being changed,
// this function deletes any device dependant objects.
bool	CMipmapApp::DestroyDXObjects(void)
{
	// add your destroy code here !
	if (m_pBrickTexture != NULL)
	{
		delete  m_pBrickTexture;
		m_pBrickTexture = NULL;
	}
	m_pD3DMaterial = NULL;
	m_pD3DDevice = NULL;
	return  CDirectXApp::DestroyDXObjects();
}
// Called once per frame, the call is the entry point for
// animating the scene. This function sets up render states,
// clears the viewport, and renders the scene.
bool	CMipmapApp::UpdateFrame(void)
{
	// add your code here !
	static FLOAT	fTimeKey = 0.0f;
	fTimeKey += 0.002f;
	// add your code here !
	D3DVECTOR	vEyePt = D3DVECTOR(0, 0, (FLOAT)(13*sin(fTimeKey) - 15));
	D3DVECTOR	vLookatPt = D3DVECTOR(0, 0, 0);
	D3DVECTOR	vUpVec = D3DVECTOR(0, 1, 0);
	CD3DMatrix	matView;
	matView.SetView(vEyePt, vLookatPt, vUpVec);
	m_pD3DDevice->SetTransform(D3DTRANSFORMSTATE_VIEW, &matView);
	//Clear the viewport
	m_pD3DDevice->Clear(RGBA_MAKE(0, 0, 0xFF, 0));
	// Begin the scene
	if (SUCCEEDED(m_pD3DDevice->BeginScene()))
	{
		CD3DMatrix	matWorld;
		// Draw the left quad. Set renderstates for bilinear filtering
		matWorld.SetTranslate(-1.1f, 0.0f, 0.0f);
		m_pD3DDevice->SetTransform(D3DTRANSFORMSTATE_WORLD, &matWorld);
		m_pD3DDevice->SetTextureStageState(0, D3DTSS_MIPFILTER, D3DTFP_NONE);
		m_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, D3DFVF_VERTEX,
			g_Mesh, 4, 0);
		// Draw the right quad. Set renderstates for mipmapping
		matWorld.SetTranslate(+1.1f, 0.0f, 0.0f);
		m_pD3DDevice->SetTransform(D3DTRANSFORMSTATE_WORLD, &matWorld);
		m_pD3DDevice->SetTextureStageState(0, D3DTSS_MIPFILTER, D3DTFP_LINEAR);
		m_pD3DDevice->DrawPrimitive(D3DPT_TRIANGLESTRIP, D3DFVF_VERTEX,
			g_Mesh, 4, 0);
		// End the scene.
		m_pD3DDevice->EndScene();
	}
	return  CDirectXApp::UpdateFrame();
}
// ---- add your functions ! ----
// ----
#if _MSC_VER >= 1200 && _MSC_VER < 1400
#ifdef _DEBUG
#pragma comment(lib, "DXGuideD_VC6.lib")
#else
#pragma comment(lib, "DXGuide_VC6.lib")
#endif	// _DEBUG
#endif	// _MSC_VER
#if _MSC_VER >= 1000 && _MSC_VER < 1200
#ifdef _DEBUG
#pragma comment(lib, "DXGuideD_VC5.lib")
#else
#pragma comment(lib, "DXGuide_VC5.lib")
#endif	// _DEBUG
#endif	// _MSC_VER
BEGIN_MESSAGE_MAP(CMipmapApp, CDirectXApp)
	//{{AFX_MSG_MAP(CMipmapApp)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
CMipmapApp theApp;

						