Hey I get a dot at the beginning of every stroke in that app. Any clue how to fix this? I really need a inking app, and procreate has line quality issues. Pressure works good in medibang paint. Except for the dot.
The devs have to fix it. Short version: The example app Apple released had a bug where input points were never receiving pressure data corrections, and it looks like a lot of developers duplicated that error in their software. I think it could be on Apple's end to make these blobs occur less frequently in the first place, but if the corrections are applied they'll disappear almost instantly.
Procreate's problem is different but related: They're doing corrections, but they have a heavy pressure smoothing effect (wish you could adjust it) and some of those erroneous predicted points get used in the smoothing algorithm before they get corrected, which means the fat start of line persists even once the touch data is corrected.
I fixed the bug in TouchCanvas and added some basic control for brush size/color... here's an example of the pressure sensitivity working really well when 1) corrections are applied properly and 2) no unnecessary pressure smoothing is applied. Brush range is from ~0-300 pixels or so, specifically doing hard pokes at the screen to demonstrate the pressure response (note the end of stroke tapers, a product of the raw pressure data, which Procreate smooths out).
Less of a drawing, more of a tech demo. As you can see the Pencil has plenty of pressure resolution, it's just not being used well in the current art apps. Ignore my terrible brush engine.
