Slider parallax relative to current slide

I want the parallax effect for the slides of the slider. Relative to the slide progress. Not the total progress (absolute).

In this example you see that the parallax effect inside a slider is not relative.
The text shouldn’t move absolutly by the total progress of the slider. Only by the own progress of the slide.


Expected something like:


See the text has local parallax, relative to its own slide. (The background is absolute to the total progress)

I doing exactly the same. Something is wrong with Ionic(?)