SDL_UpdateWindowSurfaceRects - Copy areas of the window surface to the screen.

       This function is available since SDL 3.2.0.

       This is the function you use to reflect changes to portions of the surface on the screen.

       This function is equivalent to the SDL 1.2 API SDL_UpdateRects().

       Note  that this function will update _at least_ the rectangles specified, but this is only intended as an
       optimization; in practice, this might update more of the screen (or all of  the  screen!),  depending  on
       what method SDL uses to send pixels to the system.

window the window to update.

       rects  an array of SDL_Rect structures representing areas of the surface to copy, in pixels.

       numrects
              the number of rectangles.

       SDL_UpdateWindowSurfaceRects - Copy areas of the window surface to the screen.

       for more information.

SDL_GetWindowSurface(3), SDL_UpdateWindowSurface(3)

Simple Directmedia Layer                           SDL 3.2.20                    SDL_UpdateWindowSurfaceRects(3)

#include<SDL3/SDL_video.h>boolSDL_UpdateWindowSurfaceRects(SDL_Window*window,constSDL_Rect*rects,intnumrects);

       This function should only be called on the main thread.