func (t *Texture) Lock64(r *Rect) (pix []uint64, pitch int, err error) {
if r == nil {
_, _, w, h, err := t.Query()
if err != nil {
return nil, 0, err
}
r = &Rect{
W: int32(w),
H: int32(h),
}
}
var cpix unsafe.Pointer
var cpitch C.int
if C.SDL_LockTexture(t.c, r.c(), &cpix, &cpitch) != 0 {
return nil, 0, getError()
}
pix = *(*[]uint64)(unsafe.Pointer(&reflect.SliceHeader{
Data: uintptr(cpix),
Len: int(r.W) * int(r.H),
Cap: int(r.W) * int(r.H),
}))
return pix, int(cpitch), nil
}
// Texture (https://wiki.libsdl.org/SDL_LockTexture)
func (texture *Texture) Lock(rect *Rect, pixels *unsafe.Pointer, pitch *int) error {
_pitch := (*C.int)(unsafe.Pointer(pitch))
_ret := C.SDL_LockTexture(texture.cptr(), rect.cptr(), pixels, _pitch)
if _ret < 0 {
return GetError()
}
return nil
}
func (texture *Texture) Lock(rect *Rect, pixels unsafe.Pointer, pitch *int) int {
_texture := (*C.SDL_Texture)(unsafe.Pointer(texture))
_rect := (*C.SDL_Rect)(unsafe.Pointer(rect))
_pitch := (*C.int)(unsafe.Pointer(pitch))
return (int)(C.SDL_LockTexture(_texture, _rect, &pixels, _pitch))
}
func (texture *Texture) Lock(rect *Rect, pixels unsafe.Pointer, pitch *int) int {
_pitch := (*C.int)(unsafe.Pointer(pitch))
return int(C.SDL_LockTexture(texture.cptr(), rect.cptr(), &pixels, _pitch))
}