[Bug 11846] tablet pressure sensitivity not working in Sai and many other key graphic applications

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=11846

--- Comment #113 from John Chadwick <john at jchw.io> ---
I've just noticed that another commit of mine has landed in master, and with
that, pressure sensitivity should be basically functional in PaintTool SAI 2.
Just tested the latest revision (ddec23013e39b563a3a50c0fe42c2ae8b518d538) with
a freshly unzipped SAI 2 (sai2-20190812-32bit-en) and a new WINEPREFIX, and it
appears to work.

There are still issues:

- At least on my setup, different kinds of cursors (like erasers) are treated
the same as the pen.

- SAI 2 spits out a bunch of errors when you first start drawing (but seems to
function anyways.)

- SAI 1 is still broken without additional patches. As mentioned before, the
way Wine handles Wintab contexts is not accurate. However, the behavior is
different than I thought and has nothing to do with what position on the screen
the tablet is at. (Playing with Wacom Wintab, it actually appears that it has
more to do with what window is in the foreground as to what contexts receive
events.) 

>Hello, just tested the latest patches from staging on PS 2018 and it seems like pressure sensitivity is working to some extend.
>
>I observed 2 major bugs:
>- 50% of the time when the brush tool is used, pressure sensitivity does not work at all, producing a line with 100% line thickness, seems to be random
>- when a quick line is drawn, it either works or just draws a single dot

I have not looked into your problems yet, but since a lot of stuff is changing
it might help to periodically check and see if anything has improved. I suspect
the issues in PS2018 are probably a lot different from the issues in SAI. I
don't have a modern copy of Photoshop, so I have been testing with a very old
version (which does not seem to have this problem.)

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