func MakeSurface(surf *sdl.Surface) *Surface {
surf.Lock() // Get Lock before creating the surface slice.
surface := &Surface{surf, nil}
sliceHeader := (*reflect.SliceHeader)((unsafe.Pointer(&surface.pixels)))
sliceHeader.Cap = int(surf.H * surf.W)
sliceHeader.Len = int(surf.H * surf.W)
sliceHeader.Data = uintptr(unsafe.Pointer(surf.Pixels))
surf.Unlock()
return surface
}
