// AllocFormat creates a PixelFormat structure from a uint.
// AllocFormat (https://wiki.libsdl.org/SDL_AllocFormat)
func AllocFormat(format uint) (*PixelFormat, error) {
r := (*PixelFormat)(unsafe.Pointer(C.SDL_AllocFormat(C.Uint32(format))))
if r == nil {
return nil, GetError()
}
return r, nil
}
func AllocFormat(f uint32) (*PixelFormat, error) {
p := C.SDL_AllocFormat(C.Uint32(f))
if p == nil {
return nil, getError()
}
return (*PixelFormat)(unsafe.Pointer(p)), nil
}
func NewSurface(w, h int) (*Surface, error) {
var curr C.SDL_DisplayMode
if C.SDL_GetCurrentDisplayMode(0, &curr) != 0 {
return nil, sdlerr()
}
pixfmt := C.SDL_AllocFormat(curr.format)
s := C.SDL_CreateRGBSurface(0, C.int(w), C.int(h),
C.int(pixfmt.BitsPerPixel),
pixfmt.Rmask, pixfmt.Gmask,
pixfmt.Bmask, pixfmt.Amask)
if s == nil {
return nil, sdlerr()
}
surf := &Surface{s, pixfmt}
runtime.SetFinalizer(surf, freesurf)
return surf, nil
}