Operating system: Mac OSX 10.14.3 (18D109)
Graphics card: Radeon Pro 570 4096 MB
Exact steps for others to reproduce the error
We were recently testing a setup that replaces the Cintiq with iPad Pros. As you may know new macBook trackpads are pressure sensitive. This means that you can enable pressure recording in your apps using apple' integrated input/stroke events. This also means that there are applications out there that are enabling this feature for any osx software without having to code it.
One of the easiest app to use is called inklet and lets you use the trackpad as a graphic tablet .
The same feature is brought to iPad Pros with Astropad turning your iPad in a Cintiq for your Mac.
Unfortunately both apps (working fine in other software like photoshop or krita) are experiencing the same issue with blender and are easy to reproduce trying to draw with Grease Pencil: whatever you do the final point of the strokes records 100% pressure on release, drawing a bubble at the end.
I've been in touch with Astropad team and the say:
"With the latest, we were able to get pressure sensitivity and reproduce the high pressure end of stroke. But, we were able to get a similar result with just using a trackpad as well,
which makes us believe there is a possible conflict with how Blender is sampling input/stroke events in general"
is there something you can do to help us Mac people to have a working workflow with our hardware?