Actually it's decrementing: https://github.com/geonnave/primg/blob/master/index.html#L82 https://github.com/geonnave/primg/blob/master/index.html#L82 I guess i

Actually it's decrementing: https://github.com/geonnave/primg/blob/master/index.html#L82 https://github.com/geonnave/primg/blob/master/index.html#L82 I guess it could change the whole image if the last pixels are "000...000", which happens when the top-left corner has an opposite color to the bottom-right one. This image can't be "primed" correctly, for example: https://i.imgur.com/ms3sXtF.png https://i.imgur.com/ms3sXtF.png