The flags on an SDL_Surface.
Defined in <SDL3/SDL_surface.h>
typedef Uint32 SDL_SurfaceFlags;
#define SDL_SURFACE_PREALLOCATED 0x00000001u /**< Surface uses preallocated pixel memory */
#define SDL_SURFACE_LOCK_NEEDED 0x00000002u /**< Surface needs to be locked to access pixels */
#define SDL_SURFACE_LOCKED 0x00000004u /**< Surface is currently locked */
#define SDL_SURFACE_SIMD_ALIGNED 0x00000008u /**< Surface uses pixel memory allocated with SDL_aligned_alloc() */
These are generally considered read-only.
This datatype is available since SDL 3.1.3.