SDL_FillSurfaceRect - Perform a fast fill of a rectangle with a specific color.

       This function is available since SDL 3.2.0.

color  should  be  a  pixel  of  the  format used by the surface, and can be generated by SDL_MapRGB() or
       SDL_MapRGBA().  If the color value contains an alpha component then the destination is simply filled with
       that alpha information, no blending takes place.

       If there is a clip rectangle set  on  the  destination  (set  via  SDL_SetSurfaceClipRect()),  then  this
       function will fill based on the intersection of the clip rectangle and rect.

dst    the SDL_Surface structure that is the drawing target.

       rect   the SDL_Rect structure representing the rectangle to fill, or NULL to fill the entire surface.

       color  the color to fill with.

       SDL_FillSurfaceRect - Perform a fast fill of a rectangle with a specific color.

       for more information.

SDL_FillSurfaceRects(3)

Simple Directmedia Layer                           SDL 3.2.20                             SDL_FillSurfaceRect(3)

#include<SDL3/SDL_surface.h>boolSDL_FillSurfaceRect(SDL_Surface*dst,constSDL_Rect*rect,Uint32color);

       This function is not thread safe.