SDL_Surface* image = SDL_LoadBMP("image.bmp"); SDL_BlitSurface(image, NULL, screen, NULL); SDL_Flip(screen); SDL_FreeSurface(image); 总之,要清除SDL_Surface并替换为另一个,可以使用SDL_FillRect函数来填充新的颜色或图像。 页面内容是否对你有帮助?
pScreen=SDL_SetVideoMode(width, height, bpp, flags); screenNum++; } 构造函数。如果创建1个以上的screen surface,则会抛出异常。 ScreenSurface::~ScreenSurface() { SDL_Quit(); } 析构函数。在对象消亡时,退出SDL系统。 SDL_Surface*ScreenSurface::point()const { returnpScreen; } 返回screen surface...
//SDL_RENDERER_PRESENTVSYNC: We want the renderer's present function (update screen) to be//synchornized with the monitor's refresh rateSDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE);if (ren == nullptr)...
我想到的办法,是将BaseSurface的默认构造函数仅仅提供给派生类使用,也就是说,因为BaseClass的默认构造函数本身是不能建立起必要的数据的,比如pSurface和pScreen,我们暂时都用空指针代替。这里的思想其实还是ABC的,让基类仅仅提供算法,即使算法所需要的元素还尚不存在。但是,只要这些元素存在了,BaseSurface也就可以完成这...
Thanks. This seems to indeed work (screen->format->BitsPerPixel == 8), although I'm not entirely sure if this is the normal way of dealing with 8bpp surfaces in SDL. Unfortunately, I can't seem to manipulate the pixels array of the resulting SDL_Surface. Normally, you'd lock the sur...
Then blit the stored (zoomed) surface to the screen during the "drawing" function. Simon October 15th, 2012 Please, point out how the different prototypes for read/draw pixel and get/put pixel might affect the use of the functions, even if not at all. Vincent June 22nd, 2012 Tim, ...
//应用图像拉伸SDL_Rect stretchRect;stretchRect.x=0;stretchRect.y=0;stretchRect.w=SCREEN_WIDTH;stretchRect.h=SCREEN_HEIGHT;SDL_BlitScaled(gStretchedSurface,NULL,gScreenSurface,&stretchRect); SDL2 有一个新的专用功能,可以将图像blit 成不同的大小:SDL_BlitScaled[2]。与之前的blit图像[3]一样,SDL_Blit...
CMain::CMain(int passed_ScreenWidth, int passed_ScreenHeight){ScreenWidth = passed_ScreenWidth;ScreenHeight = passed_ScreenHeight;//texture = SDL_CreateTexture(csdl_setup->GetRenderer(), SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, 640, 480);//Uint32 * pixels = new Uint32[640 * 4...
*r = intersect_rects(*r, screen_rect); }RenSurface rs = renwin_get_surface(window_renderer); /* redraw updated regions */ for (int i = 0; i < rect_count; i++) { /* draw */ @@ -315,18 +317,18 @@ void rencache_end_frame(RenWindow *window_renderer) {ren...
then through the screw belt conveying to the box-shaped frame , via elevator carrying to the top of the separator. Screen such big core-sand and burrs, etc, the small sand, dust and abrasive are carried away by the airflow. The integrity shot flow...