自学教程：C++ IMG_Load函数代码示例

Image read_image( const char *filename ){    printf("loading image '%s'.../n", filename);    // importer le fichier en utilisant SDL_image    SDL_Surface *surface= IMG_Load(filename);    if(surface == NULL)    {        printf("loading image '%s'... sdl_image failed./n", filename);        return create_image(2, 2, 4, make_color(1, 0, 0));    }    // verifier le format, rgb ou rgba    const SDL_PixelFormat format= *surface->format;    if(format.BitsPerPixel != 24 && format.BitsPerPixel != 32)    {        printf("loading image '%s'... format failed. (bpp %d)/n", filename, format.BitsPerPixel);        SDL_FreeSurface(surface);        return create_image(2, 2, 4, make_color(1, 0, 0));    }    int height= surface->h;    int width= surface->w;    int channels= (format.BitsPerPixel == 32) ? 4 : 3;    Image im;    im.data.resize(width*height*channels);    im.width= width;    im.height= height;    im.channels= channels;    // converti les donnees en pixel rgba, et retourne l'image, openGL utilise une origine en bas a gauche.    if(format.BitsPerPixel == 32)    {        int py= 0;        for(int y= height -1; y >= 0; y--, py++)        {            unsigned char *data= &im.data.front() + im.width * y * im.channels;            Uint8 *pixel= (Uint8 *) surface->pixels + py * surface->pitch;            for(int x= 0; x < width; x++, pixel+= format.BytesPerPixel, data+= 4)            {                Uint8 r= pixel[format.Rshift / 8];                Uint8 g= pixel[format.Gshift / 8];                Uint8 b= pixel[format.Bshift / 8];                Uint8 a= pixel[format.Ashift / 8];                data[0]= r;                data[1]= g;                data[2]= b;                data[3]= a;            }        }    }    else if(format.BitsPerPixel == 24)    {        int py= 0;        for(int y= height -1; y >= 0; y--, py++)        {            unsigned char *data= &im.data.front() + im.width * y * im.channels;            Uint8 *pixel= (Uint8 *) surface->pixels + py * surface->pitch;            for(int x= 0; x < width; x++, pixel+= format.BytesPerPixel, data+= 3)            {                const Uint8 r= pixel[format.Rshift / 8];                const Uint8 g= pixel[format.Gshift / 8];                const Uint8 b= pixel[format.Bshift / 8];                data[0]= r;                data[1]= g;                data[2]= b;            }        }    }    SDL_FreeSurface(surface);    return im;}

//.........这里部分代码省略.........    SDL_Rect surfaceMenu = {720, 0, 800, 600};    Menu* menu = menu_create(screen, surfaceMenu);    menu_loadBackground(menu, "resources/enemyFont.gif");    // For testing only, we add a few random buttons    menu_addButton(menu, button_createBuildButton(tower));    menu_addButton(menu, button_createBuildButton(tower));    menu_addButton(menu, button_createBuildButton(tower));    menu_render(menu);    _cell = *getCase(20,11);    // Main loop    while(actionList[QUIT].boolean == NULL) {        // Managing the events        manageEvents(viewport, flags,actionList);        for(int i=1; i<ACTION_LENGTH; i++) {            if(actionList[i].boolean) {                int repeat = (*actionList[i].action)(viewport,flags,actionList[i].boolean);                if(!repeat) {                    actionList[i].boolean = NULL;                }            }        }        // Redraws the map (viewport contents) before blitting stuff on it        updateViewport(viewport);///////////////////////////// DEBUG WALL /////////////////////////////        SDL_Rect position;        for(int i=0; i < _map->nbCaseW; i++) {            for(int j=0; j < _map->nbCaseH; j++) {                Case cell = *getCase(i,j);                position.x = cell.x;                position.y = cell.y;                if(map->matrice[i][j].hasTower == 2) {                    SDL_Surface *wall = IMG_Load(getPath("resources/brick.png"));                    blitToViewport(viewport, wall, NULL, &position);                }            }        }        position.x = _cell.x;        position.y = _cell.y;        blitToViewport(viewport, IMG_Load(getPath("resources/candy_cane.png")), NULL, &position);/////////////////////////////////////////////////////////////////////        // Move enemies        if(flags->enemy_Path_Calculation) {            pathReCalculation(catList);            pathReCalculation(zombieList);            flags->enemy_Path_Calculation = false;        }        moveEnemyList(zombieList);        moveEnemyList(catList);        // Blit enemies        drawEnemyList(zombieList);        drawEnemyList(catList);        //Blit TOWER        /*      if(event.key.keysym.sym == SDLK_u){*/        /*         upgrade(tower1);*/        /*      }*/        Bullet *bullet1 = createBullet(tower1);        animateBullet(bullet1);        drawTowerList(towerList);        /* This should be handled by event.c          switch(event.key.keysym.sym){             case SDLK_a:                flags->selectedTower = tower;              break;             case SDLK_b:                flags->selectedTower = tower->nextType;              break;             default:              break;          }*/        /*      */        // Ask SDL to swap framebuffers to update the displayed screen        SDL_Flip(screen);        // Managing frames        currentTime = SDL_GetTicks();        if (currentTime - previousTime <= 20) {            SDL_Delay(20 - (currentTime - previousTime));        }        // DEBUG        printf("Frame %i : %ims/n", framecounter++, currentTime - previousTime);        previousTime = SDL_GetTicks();    }    free(actionList);    SDL_Quit();    return EXIT_SUCCESS;}

int main(){    if(SDL_Init(SDL_INIT_VIDEO))    {        fprintf(stderr, "SDL_Init Error: %s/n", SDL_GetError());        exit(1);    }    SDL_Window *win = SDL_CreateWindow("Moving start", 100, 100, SCREEN_HEIGHT, SCREEN_WIDTH, SDL_WINDOW_SHOWN);    if(!win)    {        fprintf(stderr, "SDL_CreateWindow Error: %s/n", SDL_GetError());        SDL_Quit();        exit(1);    }    if(!IMG_Init(IMG_INIT_PNG)) //***    {        fprintf(stderr, "IMG_Init Error: %s/n", IMG_GetError());        SDL_DestroyWindow(win);        SDL_Quit();        exit(1);    }    SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);    if(!ren)    {        fprintf(stderr, "SDL_CreateRenderer Error: %s/n", SDL_GetError());        IMG_Quit(); //***        SDL_DestroyWindow(win);        SDL_Quit();        exit(1);    }    //SDL_Surface *png = IMG_Load("../../MediaResources/star.png"); //***    SDL_Surface *png = IMG_Load("../../MediaResources/lips.png");    if(!png)    {        fprintf(stderr, "IMG_Load Error: %s/n", IMG_GetError());        SDL_DestroyRenderer(ren);        IMG_Quit(); //***        SDL_DestroyWindow(win);        SDL_Quit();        exit(1);    }    SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, png);    SDL_FreeSurface(png);    if(!tex)    {        fprintf(stderr, "SDL_CreateTextureFromSurface Error: %s/n", SDL_GetError());        SDL_DestroyRenderer(ren);        IMG_Quit(); //***        SDL_DestroyWindow(win);        SDL_Quit();        exit(1);    }    /*        SDL_Rect dstRect = {SCREEN_HEIGHT / 2 - 32, SCREEN_WIDTH / 2 - 32, 64, 64};        SDL_SetRenderDrawColor(ren, 0x00, 0xFF, 0xFF, 0xFF);    */    /*        SDL_RenderClear(ren);        SDL_RenderCopy(ren, tex, NULL, &dstRect);        SDL_RenderPresent(ren);        SDL_Delay(4000);    */    /*        for(int i = 0; i < 10; ++i)        {            dstRect.h *= 1.5;            dstRect.w *= 1.5;            dstRect.x = SCREEN_HEIGHT / 2 - dstRect.h / 2;            dstRect.y = SCREEN_WIDTH / 2 - dstRect.w / 2;            SDL_RenderClear(ren);            SDL_RenderCopy(ren, tex, NULL, &dstRect);            SDL_RenderPresent(ren);            SDL_Delay(50);        }    */    bool quit = false;    SDL_Event e;    SDL_Rect destRect = {0, 0, 256, 256};    SDL_Rect rectFrom = {0, 0, 256, 256};    SDL_SetRenderDrawColor(ren, 0xFF, 0xFF, 0xFF, 0xFF);    while(!quit)    {        while(SDL_PollEvent(&e))//.........这里部分代码省略.........

bool TEXTURE::LoadCubeVerticalCross(const std::string & path, const TEXTUREINFO & info, std::ostream & error){	std::string cubefile = path;	GLuint new_handle = 0;	glGenTextures(1, &new_handle);	OPENGL_UTILITY::CheckForOpenGLErrors("Cubemap ID generation", error);	id = new_handle;	glBindTexture(GL_TEXTURE_CUBE_MAP, new_handle);	SDL_Surface * texture_surface = IMG_Load(cubefile.c_str());	if (texture_surface)	{		for (int i = 0; i < 6; ++i)		{			w = texture_surface->w/3;			h = texture_surface->h/4;			//detect channels			int format = GL_RGB;			switch (texture_surface->format->BytesPerPixel)			{				case 1:					format = GL_LUMINANCE;					break;				case 2:					format = GL_LUMINANCE_ALPHA;					break;				case 3:					format = GL_RGB;					break;				case 4:					format = GL_RGBA;					break;				default:					error << "Texture has unknown format: " + path << std::endl;					return false;					break;			}			if (format != GL_RGB)			{				//throw EXCEPTION(__FILE__, __LINE__, "Cube map texture format isn't GL_RGB (this causes problems for some reason): " + texture_path + " (" + cubefile + ")");				//game.WriteDebuggingData("Warning:  Cube map texture format isn't GL_RGB (this causes problems for some reason): " + texture_path + " (" + cubefile + ")");			}			int offsetx = 0;			int offsety = 0;			GLenum targetparam;			if (i == 0)			{				targetparam = GL_TEXTURE_CUBE_MAP_NEGATIVE_X;				offsetx = 0;				offsety = h;			}			else if (i == 1)			{				targetparam = GL_TEXTURE_CUBE_MAP_POSITIVE_X;				offsetx = w*2;				offsety = h;			}			else if (i == 2)			{				targetparam = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y;				offsetx = w;				offsety = h*2;			}			else if (i == 3)			{				targetparam = GL_TEXTURE_CUBE_MAP_POSITIVE_Y;				offsetx = w;				offsety = 0;			}			else if (i == 4)			{				targetparam = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;				offsetx = w;				offsety = h*3;			}			else if (i == 5)			{				targetparam = GL_TEXTURE_CUBE_MAP_POSITIVE_Z;				offsetx = w;				offsety = h;			}			else			{				error << "Texture has unknown format: " + path << std::endl;				return false;			}			unsigned char * cubeface = new unsigned char[w*h*texture_surface->format->BytesPerPixel];			if (i == 4) //special case for negative z			{				for (unsigned int yi = 0; yi < h; yi++)				{					for (unsigned int xi = 0; xi < w; xi++)//.........这里部分代码省略.........

int main(int argc, char *argv[]){	// Erectin' a display	SDL_Surface *screen;	SDL_Init(SDL_INIT_EVERYTHING);    screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_HWSURFACE);				SDL_WM_SetCaption("Smuggler Demo", "Smuggler Demo");	bool quit = false;			// Setting up text	TTF_Font* Font=NULL;	TTF_Init();	SDL_Surface* TextSurface = NULL;			Font=TTF_OpenFont("DejaVuSansMono.ttf",16);	SDL_Color color;	color.r=255;	color.g=255;	color.b=255;	int FontSize = 10;	bool growing = true;		// Rendering surfaces		// Set background surface to display optimized	SDL_Surface *background;	SDL_Surface *oldface;	oldface = IMG_Load("backimage.png");	background = SDL_DisplayFormat(oldface);	SDL_FreeSurface(oldface);		// Set player's image to 	Player player1("ana.png");	Player player2("character.png");	player2.coordX(500);	player2.coordY(500);		// Load overlay surface and set transparency color to 0	SDL_Surface *overlay = &map();	SDL_SetColorKey(overlay, SDL_SRCCOLORKEY,0);			// Instantiate timer object	Timer fps;		int walkFrames = 2;		while(!quit){		// Start the timer for frame rate limiting		fps.start();				// The input handling function returns a bool. While quit == false, the game will continue to run		quit = input(&player1, movementspeed);				// This function animates through the cycle, using an iterating number that triggers the different frames		// TODO: The walkframes integer should be tucked into the object it is manipulating, in this case, player.		walkFrames=animate(player1.xvel(), player1.yvel(), movementspeed, walkFrames, walkFrameInterval, &player1);				// Renders the background on the bottom		SDL_BlitSurface(background, NULL, screen, NULL);				// Puts the player underneath the overlay, which is basically the map		SDL_BlitSurface(&player1.image(), &player1.frame(), screen, &player1.location());		// Checks for collisions		if (collision(&player1.image(), player1.coordX(), player1.coordY(), 100, &player2.image(), player2.coordX(), player2.coordY(), 100))		{			cout << "COLLIDE!/n";			player2.xvel(0);			player2.yvel(0);		}		else		{			cout << "NO COLLIDE!/n";			player2.ai(player1);		}		// Puts the NPC underneath the overlay		walkFrames=animate(player2.xvel(), player2.yvel(), movementspeed/2, walkFrames, walkFrameInterval, &player2);		SDL_BlitSurface(&player2.image(), &player2.frame(), screen, &player2.location());										// Renders the map		SDL_BlitSurface(overlay, NULL, screen, NULL);				// Renders the text		if (growing == true)		{			FontSize ++;//.........这里部分代码省略.........

texture::texture(){    if (TTF_Init() == -1)        throw MenuError(TTF_GetError());    if (!(_font = TTF_OpenFont("src_graphic/res/DejaVuSans.ttf", 50)))        throw ResError(TTF_GetError());    addImage(IMG_Load("src_graphic/res/hud.png"), "HUD");    int i = 0;    std::string s;    while (i < 300)    {        s = std::to_string(i);        TextTotexture(s);        i += 1;    }    TextTotexture("lvl:");    TextTotexture("time:");    addImage(IMG_Load("src_graphic/res/ground/Grass.png"), "GROUND");    addImage(IMG_Load("src_graphic/res/ground/Gcorner.png"), "GCORNER");    addImage(IMG_Load("src_graphic/res/ground/GEdge.png"), "GEDGE");    addImage(IMG_Load("src_graphic/res/bg2.jpg"), "BG");    addImage(IMG_Load("src_graphic/res/broadcast.png"), "BROADCAST");    addImage(IMG_Load("src_graphic/res/lvlup.png"), "LVLUP");    addImage(IMG_Load("src_graphic/res/gemme/food.png"), "food");    addImage(IMG_Load("src_graphic/res/gemme/cyan.png"), "linemate");    addImage(IMG_Load("src_graphic/res/gemme/green.png"), "deraumere");    addImage(IMG_Load("src_graphic/res/gemme/lopez.png"), "sibur");    addImage(IMG_Load("src_graphic/res/gemme/purple.png"), "Mendiane");    addImage(IMG_Load("src_graphic/res/gemme/red.png"), "Phiras");    addImage(IMG_Load("src_graphic/res/gemme/yellow.png"), "Thystame");}

bool TEXTURE::LoadCube(const std::string & path, const TEXTUREINFO & info, std::ostream & error){	if (info.verticalcross)	{		return LoadCubeVerticalCross(path, info, error);	}	std::string cubefiles[6];	cubefiles[0] = path+"-xp.png";	cubefiles[1] = path+"-xn.png";	cubefiles[2] = path+"-yn.png";	cubefiles[3] = path+"-yp.png";	cubefiles[4] = path+"-zn.png";	cubefiles[5] = path+"-zp.png";	GLuint new_handle = 0;	glGenTextures(1, &new_handle);	OPENGL_UTILITY::CheckForOpenGLErrors("Cubemap texture ID generation", error);	id = new_handle;	glBindTexture(GL_TEXTURE_CUBE_MAP, new_handle);	for (unsigned int i = 0; i < 6; ++i)	{		SDL_Surface * texture_surface = IMG_Load(cubefiles[i].c_str());		if (texture_surface)		{			//store dimensions			if (i != 0 && (w != (unsigned int) texture_surface->w || h != (unsigned int) texture_surface->h))			{				error << "Cube map sides aren't equal sizes" << std::endl;				return false;			}			w = texture_surface->w;			h = texture_surface->h;			//detect channels			int format = GL_RGB;			switch (texture_surface->format->BytesPerPixel)			{				case 1:					format = GL_LUMINANCE;					break;				case 2:					format = GL_LUMINANCE_ALPHA;					break;				case 3:					format = GL_RGB;					break;				case 4:					format = GL_RGBA;					break;				default:					error << "Texture has unknown format: " + path + " (" + cubefiles[i] + ")" << std::endl;					return false;					break;			}			if (format != GL_RGB)			{				error << "Cube map texture format isn't GL_RGB (this causes problems for some reason): " + path + " (" + cubefiles[i] + ")" << std::endl;				return false;			}			// Create MipMapped Texture			GLenum targetparam;			if (i == 0)				targetparam = GL_TEXTURE_CUBE_MAP_NEGATIVE_X;			else if (i == 1)				targetparam = GL_TEXTURE_CUBE_MAP_POSITIVE_X;			else if (i == 2)				targetparam = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y;			else if (i == 3)				targetparam = GL_TEXTURE_CUBE_MAP_POSITIVE_Y;			else if (i == 4)				targetparam = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;			else if (i == 5)				targetparam = GL_TEXTURE_CUBE_MAP_POSITIVE_Z;			else			{				error << "Iterated too far: " + path + " (" + cubefiles[i] + ")" << std::endl;				assert(0);			}			glTexImage2D( targetparam, 0, format,texture_surface->w, texture_surface->h, 0, format, GL_UNSIGNED_BYTE, texture_surface->pixels );		}		else		{			error << "Error loading texture file: " + path + " (" + cubefiles[i] + ")" << std::endl;			return false;		}		if (texture_surface)		{			// Free up any memory we may have used			SDL_FreeSurface( texture_surface );			texture_surface = NULL;		}	}//.........这里部分代码省略.........

int main(int argc, char *argv[]) {	SDL_Event ev,az;	SDL_Surface *screen;	SDL_Surface *kep;	SDL_TimerID id;	FILE *fp;	int x, y,click=0,clicktwo=0,aut=0,quit=0,gomb=0,egerx,egery,nothinghappened=1;	cell cells[MAX][MAX]={0};	kep=IMG_Load("sejt.png");	if(!kep)		fprintf(stderr, "Nem sikerult betolteni a kepfajlt!/n");	/* SDL inicializálása és ablak megnyitása */	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER);	screen=SDL_SetVideoMode(MAX*MERET+KERET*2+100, MAX*MERET+KERET*2-100, 0, SDL_FULLSCREEN);	if (!screen) {		fprintf(stderr, "Nem sikerult megnyitni az ablakot!/n");		exit(1);	} 	SDL_WM_SetCaption("Game Of Life", "Game Of Life");		SDL_FillRect(screen, NULL, 0x433e3f);	boxColor(screen,KERET/3,KERET/3,MAX*MERET+KERET*2-KERET/3,MAX*MERET+KERET*2-KERET/3,KERETSZIN);	drawcell(cells,screen,kep);	while(!quit)	{		boxColor(screen, MAX*MERET+KERET*2+10,KERET+5,MAX*MERET+KERET*2+90,KERET+40,0xFFDFD2FF);		boxColor(screen, MAX*MERET+KERET*2+14,KERET+9,MAX*MERET+KERET*2+86,KERET+36,0xE5C8BDFF);		stringRGBA(screen, MAX*MERET+KERET*2+20, KERET+19, "Leptetes", 255, 255, 255, 255);		boxColor(screen, MAX*MERET+KERET*2+10,KERET+5+HEZAG,MAX*MERET+KERET*2+90,KERET+40+HEZAG,0xFFDFD2FF);		boxColor(screen, MAX*MERET+KERET*2+14,KERET+9+HEZAG,MAX*MERET+KERET*2+86,KERET+36+HEZAG,0xE5C8BDFF);		if(aut==0)			stringRGBA(screen, MAX*MERET+KERET*2+15, KERET+69, "Szimul.be", 255, 255, 255, 255);		else			stringRGBA(screen, MAX*MERET+KERET*2+15, KERET+69, "Szimul.ki", 255, 255, 255, 255);		boxColor(screen, MAX*MERET+KERET*2+10,KERET+5+HEZAG*2,MAX*MERET+KERET*2+90,KERET+40+HEZAG*2,0xFFDFD2FF);		boxColor(screen, MAX*MERET+KERET*2+14,KERET+9+HEZAG*2,MAX*MERET+KERET*2+86,KERET+36+HEZAG*2,0xE5C8BDFF);		stringRGBA(screen, MAX*MERET+KERET*2+26, KERET+19+HEZAG*2, "Torles", 255, 255, 255, 255);		boxColor(screen, MAX*MERET+KERET*2+10,KERET+5+HEZAG*3,MAX*MERET+KERET*2+90,KERET+40+HEZAG*3,0xFFDFD2FF);		boxColor(screen, MAX*MERET+KERET*2+14,KERET+9+HEZAG*3,MAX*MERET+KERET*2+86,KERET+36+HEZAG*3,0xE5C8BDFF);		stringRGBA(screen, MAX*MERET+KERET*2+27, KERET+19+HEZAG*3, "Kilovo", 255, 255, 255, 255);		filledCircleColor(screen,MAX*MERET+2*KERET+80,9,8,0xFFDFD2FF);		filledCircleColor(screen,MAX*MERET+2*KERET+80,9,6,0xE5C8BDFF);		stringRGBA(screen,MAX*MERET+KERET*2+77,6,"X",255,255,255,255);				SDL_Flip(screen);				while(SDL_PollEvent(&ev)){			switch(ev.type)			{				/*case SDL_KEYDOWN:				switch(ev.key.keysym.sym)				{				case SDLK_s:				mentes(cells);		   				break;				case SDLK_l:				fp=fopen("save.txt","r");				for(y=0;y<MAX;y++)				for(x=0;x<MAX;x++)				fscanf(fp,"%d ",&cells[y][x].alive);				fclose (fp);				drawcell(cells,screen,kep);				SDL_Flip(screen);				break;				}				break;*/			case SDL_MOUSEBUTTONDOWN:				if(ev.button.button==SDL_BUTTON_LEFT)				{					if(ev.button.x<=MAX*MERET+KERET){						egerx=holazeger(ev.button.x);						egery=holazeger(ev.button.y);						if(cells[egery][egerx].alive==1)							cells[egery][egerx].alive=0;						else							cells[egery][egerx].alive=1;					}					else if(incircle(ev.button.x,ev.button.y,MAX*MERET+2*KERET+80,9,8))						quit=1;					else if((ev.button.x<=MAX*MERET+KERET*2+90 && ev.button.x>=MAX*MERET+KERET*2+10) && (ev.button.y<=KERET+40 && ev.button.y>=KERET+5))//egyes lépés					{						round(cells);//.........这里部分代码省略.........

intmain(int argc, char *argv[]){	if(argc < 3)	{		printf("Usage: converter source.png target.raw [target bpp = 16 or 32]/n");		return 1;	}	SDL_Surface * src = IMG_Load(argv[1]);	if(!src)		return 1;	bool perPixeAlpha = true;	bool target32bpp = false;	if( argc >= 3 && strcmp(argv[3], "32") == 0 )		target32bpp = true;	/*	if( src->format->BitsPerPixel == 32 )	{		for( int i = 0; i < src->h; i++ )		{			for( int ii = 0; ii < src->w; ii++ )			{				Uint32 alpha = (* (Uint32 *) ((Uint8 *)src->pixels + i*src->pitch + ii*4)) & src->format->Amask;				if( src->format->Amask >= 0x000000ff )					alpha /= 0x1000000;				if( alpha > 15 && alpha < 240 )				{					perPixeAlpha = true;					break;				}			}		}	}	*/	printf("Converter: %s BPP %d %dx%d perPixeAlpha %d target %d bpp/n", argv[1], src->format->BitsPerPixel, src->w, src->h, (int)perPixeAlpha, target32bpp ? 32 : 16);	SDL_Surface * format1 = SDL_CreateRGBSurface( SDL_SWSURFACE|SDL_SRCALPHA, 1, 1, 16, 0xF800, 0x7C0, 0x3E, 0x1 );	if( perPixeAlpha )		format1 = SDL_CreateRGBSurface( SDL_SWSURFACE|SDL_SRCALPHA, 1, 1, 16, 0xF000, 0xF00, 0xF0, 0xF );	if( target32bpp )		format1 = SDL_CreateRGBSurface( SDL_SWSURFACE|SDL_SRCALPHA, 1, 1, 32, 0xFF, 0xFF00, 0xFF0000, 0xFF000000 );	if(!format1)		return 1;	SDL_Surface * dst = SDL_ConvertSurface(src, format1->format, SDL_SWSURFACE|SDL_SRCALPHA);	if(!dst)		return 1;	FILE * ff = fopen(argv[2], "wb");	if(!ff)		return 1;	int w = htonl(dst->w);	fwrite( &w, 1, 4, ff );	int h = htonl(dst->h);	fwrite( &h, 1, 4, ff );	int format = htonl(target32bpp ? 2 : (perPixeAlpha ? 1 : 0));	fwrite( &format, 1, 4, ff );	for( int i = 0; i < dst->h; i++ )	{		for( int ii = 0; ii < dst->w; ii++ )		{			if( (!target32bpp) && (				* (Uint16 *) ((Uint8 *)dst->pixels + i*dst->pitch + ii*2) & 0x1 == 0 && ! perPixeAlpha) )				* (Uint16 *) ((Uint8 *)dst->pixels + i*dst->pitch + ii*2) = 0;			fwrite( (Uint8 *)dst->pixels + i*dst->pitch + ii*(target32bpp?4:2), 1, (target32bpp?4:2), ff );		}	}	fclose(ff);	return 0;}

int LancerJeu(gpointer *pData){    /* Cette fonction va appeler les fonctions d'initialisations de la SDL et lancer le jeu ou l'éditeur */    SDL_Renderer *pMoteurRendu = NULL;  //Pointeurs sur le moteur de rendu    SDL_Window *pFenetre = NULL;        //Pointeur sur la fenêtre    FMOD_CHANNEL *channelEnCours = NULL;    //Pour le contr
C++ IMG_Load_RW函数代码示例
C++ IMG_Init函数代码示例