NAME
SDL_StretchSurfaceBlit - Perform a stretch blit between two surfaces of
the same format.
SYNOPSIS
#include <SDL_stretch.h>
extern int SDL_StretchSurfaceBlit(SDL_Surface *src, SDL_Rect *srcrect,
SDL_Surface *dst, SDL_Rect *dstrect);
DESCRIPTION
NOTE: The SDL_StretchSurfaceBlit function is not safe to call from
multiple threads!
The SDL_StretchSurfaceBlit function will stretch a srcrect smoothly to
the full area of the dst surface. If no srcrect is given then the full
area of the src surface is stretched smoothly to the full dst surface.
The dstrect is ignored always.
Remember that this is the inverse meaning, the main SDL lib will ignore
the srcrect and only watch for the dstrect if any.