vith17
Messages postés6Date d'inscriptiondimanche 25 janvier 2004StatutMembreDernière intervention12 août 2005
-
11 août 2005 à 22:48
vith17
Messages postés6Date d'inscriptiondimanche 25 janvier 2004StatutMembreDernière intervention12 août 2005
-
12 août 2005 à 18:01
Bonjour à tous,
J'essaie de faire un écran de veille avec un cube qui tourne en utilisant OpenGL (je me sers des tutoriaux de Nehe et de Christian Coders Network). J'arrive à compiler mon projet (sous Dev-cpp) mais j'ai quelques problèmes surtout au niveau de la gestion de hDC et de hWnd, et puis, mes textures sont sales, pixellisées (mais peut-être que c'est lié).
Est-ce que quelqu'un aurait une idée pour améliorer ça ?
Merci.
P.S. : le projet contient 2 fichiers : screen_saver.h et main.cpp
<HR>
// include file for SimpleSaver
#ifndef SIMPLESAVER_H // these two lines prevent multiple inclusions of
#define SIMPLESAVER_H // this .h file, a handy practice
// screen saver states, based on command line switches
enum States
{
state_normal, state_configure, state_preview, state_password
};
// setting for our saver
struct Settings
{
// handy stuff to keep track of
HINSTANCE hInst; // the instance handle
HWND hWnd; // our main window handle
int wndWidth; // width and height of our window
int wndHeight;
bool active; // are we initialized? Save to draw?
// run time states and settings
States state; // to keep track if we're running fullscreen, in
// configure mode, preview mode
// or password change mode
HWND previewParentHWnd; // Window handle of parent in preview mode
// user settings to save in the registry
// - nothing here yet, we'll do this in a later article
};
extern Settings g_settings; // so any other .cpp files we add later can see
// our global settings
// function prototypes
void DetermineState(LPSTR lpsz);
void DoConfigure();
AUX_RGBImageRec *LoadBMP(char *Filename);
int LoadGLTextures();
GLvoid ReSizeGLScene(GLsizei width, GLsizei height);
int InitGL(GLvoid);
int DrawGLScene(GLvoid);
GLvoid KillGLWindow(GLvoid);
LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag);
int Run();
#endif // SIMPLESAVER_H
<HR>
// main.cpp : Defines the entry point for the application.
//
//les prototypes des fonctions sont dans screen_saver.h
//variables globales
Settings g_settings; // our global screen saver settings
bool fullscreen = true;
HGLRC hRC = NULL; // Permanent Rendering Context
HDC hDC = NULL; // Private GDI Device Context
HINSTANCE hInstance; // Holds The Instance Of The Application
GLfloat xrot; // X Rotation
GLfloat yrot; // Y Rotation
GLfloat zrot; // Z Rotation
GLuint texture[3]; // Storage For Three Textures
int loop;
// given the command line, determine in which state we're supposed to
// start up in
void DetermineState(LPSTR lpsz)
{
// assume we want to start in configure mode, which is what we should do
// if there is no command line arguments
g_settings.state = state_configure;
// if the string is not NULL and not empty, we need to determine what mode
// to start up in. Otherwise, the default we just set above will be used
if((lpsz) && (lpsz[0]))
{
char param;
// ignore the switch character, which could be either a - or a /
if((lpsz[0] == '-') || (lpsz[0] == '/'))
lpsz++;
// and the next character tells us what state we need
param = tolower(lpsz[0]); // be case insensitive, just for safety
switch(param)
{
case 'p': // preview mode
case 'l': // preview mode
g_settings.state = state_preview;
// and save the parent window handle
lpsz++;
sscanf(lpsz, "%lu", &g_settings.previewParentHWnd);
break;
case 's': // start normal mode
g_settings.state = state_normal;
break;
default: // anything else ('c' or something invalid), just start
// in configure mode
g_settings.state = state_configure;
break;
}
}
} // DetermineState
void DoConfigure()
{
// in here is where you would create a dialog window, set up the wndproc
// for it, etc.
// We'll do that in a later lesson, for now just say:
MessageBox(NULL, "Nothing to configure", "Saver Configuration", MB_OK);
} // DoConfigure
if (!Filename) // Make Sure A Filename Was Given
{
return NULL; // If Not Return NULL
}
File=fopen(Filename,"r"); // Check To See If The File Exists
if (File) // Does The File Exist?
{
fclose(File); // Close The Handle
return auxDIBImageLoad(Filename); // Load The Bitmap And Return A Pointer
}
return NULL; // If Load Failed Return NULL
}//LoadBMP
int LoadGLTextures() // Load Bitmaps And Convert To Textures
{
int Status=FALSE; // Status Indicator
AUX_RGBImageRec *TextureImage[3]; // Create Storage Space For The Texture
memset(TextureImage,0,sizeof(void *)*3); // Set The Pointer To NULL
// Load The Bitmap, Check For Errors, If Bitmap's Not Found Quit
if ((TextureImage[0]=LoadBMP("Data/img01.bmp")) &&
(TextureImage[1]=LoadBMP("Data/img02.bmp")) &&
(TextureImage[2]=LoadBMP("Data/img03.bmp")))
{
Status=TRUE; // Set The Status To TRUE
glGenTextures(3, &texture[0]); // Create The Textures
// Typical Texture Generation Using Data From The Bitmap
for (loop=0; loop<3; loop++) // Loop Through All 3 Textures
{
glBindTexture(GL_TEXTURE_2D, texture[loop]);//loop replaces the normal [0] to make 3
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, 3, TextureImage[loop]->sizeX, TextureImage[loop]->sizeY,
0, GL_RGB, GL_UNSIGNED_BYTE, TextureImage[loop]->data);
}
for (loop=0; loop<3; loop++) // Loop Through All 3 Textures freeing the data
{
if (TextureImage[loop]) // If Texture Exists
{
if (TextureImage[loop]->data) // If Texture Image Exists
{
free(TextureImage[loop]->data); // Free The Texture Image Memory
}
free(TextureImage[loop]); // Free The Image Structure
}
}
}
else
{
MessageBox(NULL, "Bitmaps not found.", "WARNING", MB_OK | MB_ICONEXCLAMATION);
}
return Status; // Return The Status
}//LoadGLTextures
GLvoid ReSizeGLScene(GLsizei width, GLsizei height) // Resize And Initialize The GL Window
{
if(height==0) // Prevent A Divide By Zero By
{
height = 1; // Making Height Equal One
}
glViewport(0, 0, width, height); // Reset The Current Viewport
glMatrixMode(GL_PROJECTION); // Select The Projection Matrix
glLoadIdentity(); // Reset The Projection Matrix
// Calculate The Aspect Ratio Of The Window
gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
glMatrixMode(GL_MODELVIEW); // Select The Modelview Matrix
glLoadIdentity(); // Reset The Modelview Matrix
}//ReSizeGLScene
int InitGL(GLvoid) // All Setup For OpenGL Goes Here
{
if (!LoadGLTextures()) // Jump To Texture Loading Routine
{
return FALSE; // If Texture Didn't Load Return FALSE
}
glEnable(GL_TEXTURE_2D); // Enable Texture Mapping
glShadeModel(GL_SMOOTH); // Enables Smooth Shading
glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Black Background
glClearDepth(1.0f); // Depth Buffer Setup
glEnable(GL_DEPTH_TEST); // Enables Depth Testing
glDepthFunc(GL_LEQUAL); // The Type Of Depth Test To Do
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Really Nice Perspective Calculations
return TRUE; // Initialization Went OK
}//InitGL
int DrawGLScene(GLvoid) // Here's Where We Do All The Drawing
{
// if we're not active, don't do anything
if(!g_settings.active)
return FALSE;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
glLoadIdentity(); // Reset The Current Matrix
glTranslatef(0.0f,0.0f,-5.0f); // Move Into The Screen 5 Units
glRotatef(xrot,1.0f,0.0f,0.0f); // Rotate On The X Axis
glRotatef(yrot,0.0f,1.0f,0.0f); // Rotate On The Y Axis
glRotatef(zrot,0.0f,0.0f,1.0f); // Rotate On The Z Axis
glBindTexture(GL_TEXTURE_2D, texture[0]); // Select Our Texture
glBegin(GL_QUADS);
// Front Face
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Top Left Of The Texture and Quad
// Back Face
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Bottom Left Of The Texture and Quad
glEnd();
glBindTexture(GL_TEXTURE_2D, texture[1]); // Select Our Texture
glBegin(GL_QUADS);
// Right face
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Bottom Left Of The Texture and Quad
// Left Face
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Texture and Quad
glEnd();
glBindTexture(GL_TEXTURE_2D, texture[2]); // Select Our Texture
glBegin(GL_QUADS);
// Top Face
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f); // Bottom Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f); // Top Right Of The Texture and Quad
// Bottom Face
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f); // Top Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, -1.0f, -1.0f); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, 1.0f); // Bottom Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Right Of The Texture and Quad
glEnd();
xrot+=0.3f; // X Axis Rotation
yrot+=0.2f; // Y Axis Rotation
zrot+=0.4f; // Z Axis Rotation
return TRUE; // Keep Going
}//DrawGLScene
GLvoid KillGLWindow(GLvoid) // Properly Kill The Window
{
if(fullscreen) // Are We In Fullscreen Mode?
{
ChangeDisplaySettings(NULL, 0); // If So Switch Back To The Desktop
ShowCursor(TRUE); // Show Mouse Pointer
}
if(hRC) // Do We Have A Rendering Context?
{
if(!wglMakeCurrent(NULL, NULL)) // Are We Able To Release The DC And RC Contexts?
{
MessageBox(NULL, "Release of DC and RC failed.", "SHUTDOWN ERROR", MB_OK | MB_ICONINFORMATION);
}
if(!wglDeleteContext(hRC)) // Are We Able To Delete The RC?
{
MessageBox(NULL, "Release rendering context failed.", "SHUTDOWN ERROR", MB_OK | MB_ICONINFORMATION);
}
hRC = NULL;
}
if(hDC && !ReleaseDC(g_settings.hWnd, hDC)) // Are We Able To Release The DC
{
MessageBox(NULL, "Release device context failed.", "SHUTDOWN ERROR", MB_OK | MB_ICONINFORMATION);
hDC = NULL; // Set DC To NULL
}
if(g_settings.hWnd && !DestroyWindow(g_settings.hWnd)) // Are We Able To Destroy The Window?
{
MessageBox(NULL,"Could Not Release hWnd.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
g_settings.hWnd = NULL; // Set hWnd To NULL
}
if(!UnregisterClass("WindowsScreenSaverClass", hInstance)) // Are We Able To Unregister Class
{
MessageBox(NULL,"Could Not Unregister Class.","SHUTDOWN ERROR",MB_OK | MB_ICONINFORMATION);
hInstance=NULL; // Set hInstance To NULL
}
}// KillGLWindow
LRESULT CALLBACK WndProc( HWND hWnd, // Handle For This Window
UINT uMsg, // Message For This Window
WPARAM wParam, // Additional Message Information
LPARAM lParam) // Additional Message Information
{
static DWORD dwFakeMouseMoveMsgAllowed = 5;
static RECT rc; // RECT structure
switch (uMsg) // Check For Windows Messages
{
case WM_CREATE: // do any initialization in here, e.g. create timers, etc.
break;
case WM_SETCURSOR: // Windows wants us to initialize our mouse cursor
// if we're in normal, full screen mode, hide the mouse cursor
if(g_settings.state == state_normal)
SetCursor(NULL);
break;
case WM_PAINT: // Windows wants us to redraw the window. We'll just
// fill the screen with black here, as our DoFrame function will
// do the real drawing.
// Get the window's DC
hDC = GetDC(hWnd);
// get the size of the client area (our drawing area)
GetClientRect (hWnd, &rc);
// fill that area with black
FillRect (GetDC(hWnd), &rc, (HBRUSH)GetStockObject(BLACK_BRUSH));
// we're done with the DC
ReleaseDC(hWnd,GetDC(hWnd));
// BTW, if Windows is sending us paint messages, we must be active
g_settings.active = true;
break;
case WM_ACTIVATE: // Windows is telling us to activate or deactivate
// if Windows is telling us we should be inactive...
if(LOWORD(wParam) == WA_INACTIVE)
{
// remember that we are now inactive, so our DrawGLScene doesn't try
// to draw when it shouldn't
g_settings.active = false;
// and send ourselves a close message
PostMessage(hWnd, WM_CLOSE, 0, 0);
}
else
{
// else Windows is activating us
g_settings.active = true;
}
break;
case WM_SYSCOMMAND: // Special system ommands
{
switch (wParam) // Which command?
{
case SC_SCREENSAVE: // If another instance of any screensaver
// is trying to start,
return 0; // we don't let it. Returning 0 tells
// Windows it should let that saver start.
}
break;
}
case WM_CLOSE: // We're supposed to close down
// we are no longer active
g_settings.active = false;
// Send ourselves a quit message, which is the final message an
// app receives. We'll use it in our Run function below to
// break out of our main loop.
PostQuitMessage(0);
break;
// on key presses or mouse events
case WM_MOUSEMOVE: // Windows is telling us that the mouse has moved
// Normally, we want to close our screen saver at this point (if
// we're running in normal mode), but in between the time our app
// starts and the window is actually created and ready for drawing,
// mouse move messages might sneak in. We want to ignore the first
// few mouse move messages to prevent the saver from closing as soon
// as it starts up.
// If we have any fake move messages left to count
if(dwFakeMouseMoveMsgAllowed)
{
// decrease our count and keep going, not worrying about it
dwFakeMouseMoveMsgAllowed--;
break;
}
// else, fall through to next case which will potentially close
// our saver
case WM_KEYDOWN: // Windows is telling us a key has been pressed
case WM_LBUTTONDOWN: // the left mouse button was pressed
case WM_RBUTTONDOWN: // the right mouse button was pressed.
case WM_MBUTTONDOWN: // the middlee mouse button was pressed.
// if we're in normal, full screen mode, we normally want to shutdown
// our screen saver as a result
if(g_settings.state == state_normal)
{
// send ourselves a close message
PostMessage(hWnd, WM_CLOSE, 0, 0);
}
break;
case WM_SIZE: // Resize The OpenGL Window
{
ReSizeGLScene(LOWORD(lParam),HIWORD(lParam)); // LoWord=Width, HiWord=Height
return 0; // Jump Back
}
}
// Pass All Unhandled Messages To DefWindowProc
return DefWindowProc(hWnd,uMsg,wParam,lParam);
}
BOOL CreateGLWindow(char* title, int width, int height, int bits, bool fullscreenflag)
{
GLuint PixelFormat; // Holds The Results After Searching For A Match
WNDCLASS wc; // Windows Class Structure
DWORD dwExStyle; // Window Extended Style
DWORD dwStyle; // Window Style
RECT WindowRect; // Grabs Rectangle Upper Left / Lower Right Values
WindowRect.left = (long) 0; // Set Left Value To 0
WindowRect.right = (long) width; // Set Right Value To Requested Width
WindowRect.top = (long) 0; // Set Top Value To 0
WindowRect.bottom = (long) height; // Set Bottom Value To Requested Height
fullscreen = fullscreenflag; // Set The Global Fullscreen Flag
hInstance = g_settings.hInst; // Grab An Instance For Our Window
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; // Redraw On Move, And Own DC For Window
wc.lpfnWndProc = (WNDPROC) WndProc; // WndProc Handles Messages
wc.cbClsExtra = 0; // No Extra Window Data
wc.cbWndExtra = 0; // No Extra Window Data
wc.hInstance = hInstance; // Set The Instance
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO); // Load The Default Icon
wc.hCursor = NULL; // No Pointer
wc.hbrBackground = NULL; // No Background Required For GL
wc.lpszMenuName = NULL; // We Don't Want A Menu
wc.lpszClassName = "WindowsScreenSaverClass"; // Set The Class Name
if(!RegisterClass(&wc)) // Attempt To Register The Window Class
{
MessageBox(NULL, "Failed to register the window class.", "ERROR", MB_OK | MB_ICONEXCLAMATION);
return FALSE; // Exit And Return FALSE
}
// Try To Set Selected Mode And Get Results. NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.
if(ChangeDisplaySettings(&dmScreenSettings, CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
{
// If The Mode Fails, Offer Two Options. Quit Or Run In A Window.
if (MessageBox(NULL,"The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?","CjC Screen Saver",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
{
fullscreen = false; // Select Windowed Mode (Fullscreen=FALSE)
}
else
{
// Pop Up A Message Box Letting User Know The Program Is Closing.
MessageBox(NULL,"Program Will Now Close.","ERROR",MB_OK|MB_ICONSTOP);
return FALSE; // Exit And Return FALSE
}
}
}
////////////////////////////////////////////////////////////////////////////////
// Create the main window.
// if our saver is starting in normal, full screen mode...
if(g_settings.state == state_normal&&fullscreen)
{
// our size is 0,0 (top,left) to bottom,right of the entire screen
SetRect(&WindowRect, 0, 0, GetSystemMetrics(SM_CXSCREEN),
GetSystemMetrics(SM_CYSCREEN));
// and we want a popup, topmost window with no borders, caption, etc.
dwExStyle=WS_EX_APPWINDOW; // Window Extended Style
dwStyle = WS_POPUP | WS_EX_TOPMOST; // Windows Style
ShowCursor(FALSE); // Hide Mouse Pointer
}
else // we're in preview mode
{
// our size is the size of our parent's client area
GetClientRect(g_settings.previewParentHWnd, &WindowRect);
// and we are a child window
dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE; // Window Extended Style
dwStyle=WS_CHILD; // Windows Style
}
////////////////////////////////////////////////////////////////////////////////
if (!(g_settings.hWnd=CreateWindowEx( dwExStyle, // Extended Style For The Window
"WindowsScreenSaverClass", // Class Name
title, // Window Title
WS_CLIPSIBLINGS | // Required Window Style for OpenGL
WS_CLIPCHILDREN | // Required Window Style for OpenGL
dwStyle, // Selected Window Style
0, 0, // Window Position
WindowRect.right-WindowRect.left, // Calculate Adjusted Window Width
WindowRect.bottom-WindowRect.top, // Calculate Adjusted Window Height
NULL, // No Parent Window
NULL, // No Menu
hInstance, // Instance
NULL))) // Don't Pass Anything To WM_CREATE
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Window Creation Error.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
static PIXELFORMATDESCRIPTOR pfd= // pfd Tells Windows How We Want Things To Be
{
sizeof(PIXELFORMATDESCRIPTOR), // Size Of This Pixel Format Descriptor
1, // Version Number
PFD_DRAW_TO_WINDOW | // Format Must Support Window
PFD_SUPPORT_OPENGL | // Format Must Support OpenGL
PFD_DOUBLEBUFFER, // Must Support Double Buffering
PFD_TYPE_RGBA, // Request An RGBA Format
bits, // Select Our Color Depth
0, 0, 0, 0, 0, 0, // Color Bits Ignored
0, // No Alpha Buffer
0, // Shift Bit Ignored
0, // No Accumulation Buffer
0, 0, 0, 0, // Accumulation Bits Ignored
16, // 16Bit Z-Buffer (Depth Buffer)
0, // No Stencil Buffer
0, // No Auxiliary Buffer
PFD_MAIN_PLANE, // Main Drawing Layer
0, // Reserved
0, 0, 0 // Layer Masks Ignored
};
if (!(hDC=GetDC(g_settings.hWnd))) // Did We Get A Device Context?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Create A GL Device Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if (!(PixelFormat=ChoosePixelFormat(hDC,&pfd))) // Did Windows Find A Matching Pixel Format?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Find A Suitable PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if(!SetPixelFormat(hDC,PixelFormat,&pfd)) // Are We Able To Set The Pixel Format?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Set The PixelFormat.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if (!(hRC=wglCreateContext(hDC))) // Are We Able To Get A Rendering Context?
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Create A GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
if(!wglMakeCurrent(hDC,hRC)) // Try To Activate The Rendering Context
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Can't Activate The GL Rendering Context.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
ShowWindow(g_settings.hWnd,SW_SHOW); // Show The Window
SetForegroundWindow(g_settings.hWnd); // Slightly Higher Priority
SetFocus(g_settings.hWnd); // Sets Keyboard Focus To The Window
ReSizeGLScene(width, height); // Set Up Our Perspective GL Screen
if (!InitGL()) // Initialize Our Newly Created GL Window
{
KillGLWindow(); // Reset The Display
MessageBox(NULL,"Initialization Failed.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE; // Return FALSE
}
return TRUE; // Success
}// CreateGLWindow
// the main message loop: run until WM_QUIT
int Run()
{
MSG msg;
bool done = false;
while(!done)
{
// Is There A Message Waiting?
if(PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
// WM_QUIT means we're all done
if(msg.message == WM_QUIT)
{
done = true;
}
else
{
TranslateMessage(&msg); // for virtual keys, etc.
DispatchMessage(&msg); // send to our winproc for processing
}
}
else
{
// Draw The Scene
if (g_settings.active) // only if we're in an active state
{
DrawGLScene(); // Draw The Scene
SwapBuffers(hDC); // Swap Buffers (Double Buffering)
Sleep(5); // Sleep to give the system a chance to process
// background tasks. Without a Sleep, our loop will
// run as past as possible (which *might* be what
// you want), but will eat 99.99% of your CPU time
// (ie. background processes will run slower!).
// Not a good idea if this saver is running on
// a server, etc.
}
}
}
// Shutdown
KillGLWindow(); // Kill The Window
return (msg.wParam); // Exit The Program
} // Run
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
// basic initialization
g_settings.active = false;
g_settings.hInst = hInstance; // save instance handle
g_settings.previewParentHWnd = NULL;
// determine which state our saver needs to start in
DetermineState(lpCmdLine);
// if it's a password request (Win9x), let's not bother.
// Maybe I'll add this later, if anyone really wants it
if(g_settings.state == state_password)
{
return 0;
}
// are we supposed to show the configure dialog box?
if(g_settings.state == state_configure)
{
DoConfigure();
return 0;
}
// Start the message loop.
int rc = Run();
// Return the exit code to the system.
return rc;
} // WinMain
neodelphi
Messages postés442Date d'inscriptionjeudi 4 avril 2002StatutMembreDernière intervention11 août 2008 11 août 2005 à 22:57
Heu, tout d'abord j'ai trop la fleme de lire les derniers 90% de ton code...
Tu dit que tes textures sont pixelisées, est-ce que c'est juste les textures ou même les bords de ton cube ?
Si c'est juste les textures c'est normal. Pour avoir des textures non pixélisées, il faut configurer openGl pour que la carte graphique fasse un rendu plus soigné des textures (je croit que ça s'appele le mipMapping ou textureSampling je sais plus trop). Si en revanche ton cube est aussi pixélisé, que ça fait très crade, vérifi que la taille du buffer de rendu openGl à les même dimensions que la zone de dessin de la fenêtre (cela peut arriver si lorsque tu spécifi la taille de la fenêtre windows tu oubli que cette taille inclu la bordure de la fenetre. La zone de dessin sera alors plus petite que le buffer openGl et donc openGl redimensionnera ton image).
vith17
Messages postés6Date d'inscriptiondimanche 25 janvier 2004StatutMembreDernière intervention12 août 2005 11 août 2005 à 23:58
Oui je sais, j'ai un peu fait le bourin...
En ce qui concerne les textures, quand je lance le programme, en plus d'être sales il y a des couleurs de changées à certains endroits. Par exemple : du vert à la place du bleu.
Ce qui me faisait dire que ce problème est peut-être lié à la gestion de mes fenêtres, c'est que j'ai un programme qui fait exactement la même chose au niveau d'OpenGL (affichage du cube avec les textures) sauf qu'il n'est pas destiné à être un écran de veille et il marche !
