let paloff = buf.get_offset(1);
let data = buf.get_data_mut().unwrap();
for (inrow, outrow) in self.framebuf.chunks(self.width).zip(data.chunks_mut(stride)) {
let paloff = buf.get_offset(1);
let data = buf.get_data_mut().unwrap();
for (inrow, outrow) in self.framebuf.chunks(self.width).zip(data.chunks_mut(stride)) {