Main.cpp File Reference

Performs DirectX initialization via DXUT callback functions. Adds some additional helper functions to support screenshot capturing. More...

#include "dxstdafx.h"
#include "resource.h"
#include <math.h>
#include <stdio.h>
#include <time.h>
#include "Cube.h"
#include "Mesh.h"
#include "Parameters.h"
#include "EnvMap.h"

Functions
bool CALLBACK	IsDeviceAcceptable (D3DCAPS9 *pCaps, D3DFORMAT AdapterFormat, D3DFORMAT BackBufferFormat, bool bWindowed, void *pUserContext)
	DXUT callback (Rejects any devices that aren't acceptable by returning false).
bool CALLBACK	ModifyDeviceSettings (DXUTDeviceSettings *pDeviceSettings, const D3DCAPS9 *pCaps, void *pUserContext)
	DXUT callback (Before a device is created, modifies the device settings as needed).
HRESULT CALLBACK	OnCreateDevice (IDirect3DDevice9 *g_pd3dDevice, const D3DSURFACE_DESC *pBackBufferSurfaceDesc, void *pUserContext)
	DXUT callback (You should create any D3DPOOL_MANAGED resources here).
HRESULT CALLBACK	OnResetDevice (IDirect3DDevice9 *g_pd3dDevice, const D3DSURFACE_DESC *pBackBufferSurfaceDesc, void *pUserContext)
	DXUT callback (You should create any D3DPOOL_DEFAULT resources here).
void CALLBACK	OnFrameMove (IDirect3DDevice9 *g_pd3dDevice, double fTime, float fElapsedTime, void *pUserContext)
	DXUT callback (Handle updates to the scene).
void CALLBACK	OnFrameRender (IDirect3DDevice9 *g_pd3dDevice, double fTime, float fElapsedTime, void *pUserContext)
	DXUT callback (Render the scene). Also responsible for screenshot taking.
LRESULT CALLBACK	MsgProc (HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, bool *pbNoFurtherProcessing, void *pUserContext)
	DXUT callback (Message processing).
void CALLBACK	KeyboardProc (UINT nChar, bool bKeyDown, bool bAltDown, void *pUserContext)
	DXUT callback (Keystroke messages).
void CALLBACK	OnGUIEvent (UINT nEvent, int nControlID, CDXUTControl *pControl, void *pUserContext)
	DXUT callback (called by the framework in case of GUI events).
void CALLBACK	OnLostDevice (void *pUserContext)
	DXUT callback (You should release resources created in the OnResetDevice callback here).
void CALLBACK	OnDestroyDevice (void *pUserContext)
	DXUT callback (You should release resources created in the OnCreateDevice callback here).
void	InitParams ()
	Defines application-specific parameters and creates GUI controls (sliders, checkboxes) for them.
void	RenderText ()
	Renders help and statistics text and displays algorithmic-specific parameters.
void	SaveCameraPosition (char *fileName)
	Writes current camera settings to file.
void	LoadCameraPosition (char *fileName)
	Loads camera settings from file.
int	GenerateNewFileName (int &counter)
	Generates a non-existing filename to store the screenshot in the shots directory.
INT WINAPI	WinMain (HINSTANCE, HINSTANCE, LPSTR, int)
	Entry point to the program.
void	OnLoad ()
void	OnSave ()
void	OnReset ()
float	Exponent (float f)
void	OnChangeCubeMap ()
void	OnChangeShininess ()
IDirect3DTexture9 *	CreateTexture (int size, D3DFORMAT Format)
	Util function. Creates an empty texture that shall be used as render target.
IDirect3DCubeTexture9 *	CreateCubeTexture (int size, D3DFORMAT Format)
	Util function. Creates an empty cubemap texture that shall be used as render target.
Variables
const int	WIDTH = 640
const int	HEIGHT = 640
const int	CHARBUFFER_SIZE = 200
IDirect3DDevice9 *	g_pd3dDevice
ID3DXEffect *	g_pEffect
CDXUTDialogResourceManager	g_DialogResourceManager
	Manager for shared resources of dialogs.
CD3DSettingsDlg	g_SettingsDlg
	Device settings dialog.
CDXUTDialog	g_HUD
	Dialog for sample specific controls.
ID3DXFont *	g_pFont
	Font for drawing text.
ID3DXSprite *	g_pTextSprite
	Sprite for batching draw text calls.
IDirect3DSurface9 *	g_pSaveSurface
	surface for screenshot capturing
bool	bSavingScreenshot = false
	boolean for screenshot capturing
int	counter = 0
	counter for screenshots (see GenerateNewFileName())
HRESULT	hr
EnvMap *	envmapRenderer = new EnvMap()
	problem-specific stuff
Parameters	pp
	managing parameters of the algorithm
CModelViewerCamera	camera
	camera

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Detailed Description

Performs DirectX initialization via DXUT callback functions. Adds some additional helper functions to support screenshot capturing.

• Performs DirectX initialization via DXUT callback functions

• Adds some additional helper functions to support screenshot capturing.

Author:

Istvan Lazanyi, TU Budapest

Date:

2006-04-26

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Function Documentation

IDirect3DCubeTexture9* CreateCubeTexture (  int  size, D3DFORMAT  Format )

Util function. Creates an empty cubemap texture that shall be used as render target. Parameters: size  size of the new texture format  format of the new texture (eg. D3DFMT_A32B32G32R32F)

IDirect3DTexture9* CreateTexture (  int  size, D3DFORMAT  Format )

Util function. Creates an empty texture that shall be used as render target. Note that render targets (D3DUSAGE_RENDERTARGET) must be created in the default memory pool (D3DPOOL_DEFAULT). Parameters: size  size of the new texture format  format of the new texture (eg. D3DFMT_A32B32G32R32F)

float Exponent (  float  f  )

int GenerateNewFileName (  int &  counter  )

Generates a non-existing filename to store the screenshot in the shots directory. Generated file names are shots/000.png, shots/001.png, ...

void InitParams (   )

Defines application-specific parameters and creates GUI controls (sliders, checkboxes) for them. Finally, loads initial values for the parameters from file called .params0 (Reset).

bool CALLBACK IsDeviceAcceptable (  D3DCAPS9 *  pCaps, D3DFORMAT  AdapterFormat, D3DFORMAT  BackBufferFormat, bool  bWindowed, void *  pUserContext )

DXUT callback (Rejects any devices that aren't acceptable by returning false). DXUT callback. Rejects any devices that aren't acceptable by returning false.

void CALLBACK KeyboardProc (  UINT  nChar, bool  bKeyDown, bool  bAltDown, void *  pUserContext )

DXUT callback (Keystroke messages).

void LoadCameraPosition (  char *  fileName  )

Loads camera settings from file. Loads camera settings (world matrix and camera position) from an existing file. Useful when capturing multiple screenshots from the same view. Parameters: fileName  the name of the file to load from.

bool CALLBACK ModifyDeviceSettings (  DXUTDeviceSettings *  pDeviceSettings, const D3DCAPS9 *  pCaps, void *  pUserContext )

DXUT callback (Before a device is created, modifies the device settings as needed).

LRESULT CALLBACK MsgProc (  HWND  hWnd, UINT  uMsg, WPARAM  wParam, LPARAM  lParam, bool *  pbNoFurtherProcessing, void *  pUserContext )

DXUT callback (Message processing). Forwards messages to the DirectX settings window, the GUI controls or the camera, respecively.

void OnChangeCubeMap (   )

void OnChangeShininess (   )

HRESULT CALLBACK OnCreateDevice (  IDirect3DDevice9 *  pd3dDevice, const D3DSURFACE_DESC *  pBackBufferSurfaceDesc, void *  pUserContext )

DXUT callback (You should create any D3DPOOL_MANAGED resources here). Compiles the effect file (EnvMap.fx) and displays error message if compilation fails. Finally, forwards call to EnvMap::OnCreateDevice.

void CALLBACK OnDestroyDevice (  void *  pUserContext  )

DXUT callback (You should release resources created in the OnCreateDevice callback here). Forwards call to EnvMap::OnDestroyDevice.

void CALLBACK OnFrameMove (  IDirect3DDevice9 *  g_pd3dDevice, double  fTime, float  fElapsedTime, void *  pUserContext )

DXUT callback (Handle updates to the scene).

void CALLBACK OnFrameRender (  IDirect3DDevice9 *  g_pd3dDevice, double  fTime, float  fElapsedTime, void *  pUserContext )

DXUT callback (Render the scene). Also responsible for screenshot taking. If a screenshot is being taken (bSavingScreenshot), sets g_pSaveSurface as the render target and saves it to a non-existent file (GenerateNewFileName()). Also saves current camera parameters (SaveCameraPosition()). To perform actual rendering, it forwards call to EnvMap::OnFrameRender with current camera matrices.

void CALLBACK OnGUIEvent (  UINT  nEvent, int  nControlID, CDXUTControl *  pControl, void *  pUserContext )

DXUT callback (called by the framework in case of GUI events).

void OnLoad (   )

void CALLBACK OnLostDevice (  void *  pUserContext  )

DXUT callback (You should release resources created in the OnResetDevice callback here).

void OnReset (   )

HRESULT CALLBACK OnResetDevice (  IDirect3DDevice9 *  g_pd3dDevice, const D3DSURFACE_DESC *  pBackBufferSurfaceDesc, void *  pUserContext )

DXUT callback (You should create any D3DPOOL_DEFAULT resources here). Resets camera and HUD elements. Initializes g_pSaveSurface according to the current screen resolution. Then it forwards call to EnvMap::OnResetDevice.

void OnSave (   )

void RenderText (   )

Renders help and statistics text and displays algorithmic-specific parameters. Statistics: FPS value, screen resolution Help: displays avaliable keyboard shortcuts after the user presses F1. Algorithmic-specific parameters: describes the currently selected method and displays its most important parameters.

void SaveCameraPosition (  char *  fileName  )

Writes current camera settings to file. Writes current camera settings (world matrix and camera position) to file. Useful when capturing multiple screenshots from the same view. Parameters: fileName  the name of the file to be created

INT WINAPI WinMain (  HINSTANCE  , HINSTANCE  , LPSTR  , int  )

Entry point to the program. Initializes everything and goes into a message processing loop. Idle time is used to render the scene.

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Variable Documentation

bool bSavingScreenshot = false

boolean for screenshot capturing

CModelViewerCamera camera

camera

const int CHARBUFFER_SIZE = 200

int counter = 0

counter for screenshots (see GenerateNewFileName())

EnvMap* envmapRenderer = new EnvMap()

problem-specific stuff

CDXUTDialogResourceManager g_DialogResourceManager

Manager for shared resources of dialogs.

CDXUTDialog g_HUD

Dialog for sample specific controls.

IDirect3DDevice9* g_pd3dDevice

ID3DXEffect* g_pEffect

ID3DXFont* g_pFont

Font for drawing text.

IDirect3DSurface9* g_pSaveSurface

surface for screenshot capturing

ID3DXSprite* g_pTextSprite

Sprite for batching draw text calls.

CD3DSettingsDlg g_SettingsDlg

Device settings dialog.

const int HEIGHT = 640

HRESULT hr

Parameters pp

managing parameters of the algorithm

const int WIDTH = 640

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