Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_DuplicateSurface - Creates a new surface identical to the existing surface.
HEADER FILE
Defined in SDL3/SDL_surface.h
SYNOPSIS
#include "SDL3/SDL.h" SDL_Surface * SDL_DuplicateSurface(SDL_Surface *surface);
DESCRIPTION
If the original surface has alternate images, the new surface will have a reference to them as well. The returned surface should be freed with SDL_DestroySurface ().
FUNCTION PARAMETERS
surface the surface to duplicate.
RETURN VALUE
( SDL_Surface *) Returns a copy of the surface or NULL on failure; call SDL_GetError () for more information.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
•(3), SDL_DestroySurface(3) Simple Directmedia Layer SDL 3.2.8 SDL_DuplicateSurface(3)