configure and use midi controller

[cb_in_lfk]

I'd like to enable my Midi Fighter Twister (16 rotary encoders) to control certain GIMP parameters such as airbrush size, rate, flow; layer blending mode, opacity; mask visible/not, etc.

I am using GIMP 3.0.6 on an M1 Mac Mini running Tahoe 26.1

In      Preferences -> Input Controllers -> Configure Input Controller        I see a "MIDI" option, but there is no dropdown to choose a connected controller and I've tried a variety of names corresponding to the midi devices that are listed in Mac OS "Midi Audio Setup", e.g. ("Midi Fighter Twister", "IAC Driver").

The Midi Fighter Twister is connected and works properly in my DAW. 

Does anyone have any tips on this issue?

Thanks!

[rich2005]

That might be an interesting project.  A caveate, I have no midi device to try and using linux / Gimp 3.0.6

Did you add MIDI from Available Controllers to Active Controllers ?  Looks like this here:

   

No list of controllers, might be a MacOS thing ?

[cb_in_lfk]

(12-29-2025, 04:07 PM)rich2005 Wrote: That might be an interesting project.  A caveate, I have no midi device to try and using linux / Gimp 3.0.6

Did you add MIDI from Available Controllers to Active Controllers ?  Looks like this here:



No list of controllers, might be a MacOS thing ?

Hi - thanks for the response.

Yes, I did add the MIDI from Available Controllers to Active Controllers. I haven't found any documentation on if or what to change the name to in the "General" field at the top. It looks as though when changing the value of the "Device" field (3rd field in the "MIDI" section) the software is checking something as the "State" field immediately above the "Device" field changes. But I don't know what to change "Device" to. I've tried the names that appear in my DAW and in MacOS Audio Midi Setup but have not found a reference to the midi device that works.

Here's what I'm seeing:

   

[rich2005]

Not looking very promising. see: https://gitlab.gnome.org/GNOME/gimp/-/work_items/9871
and
https://gitlab.gnome.org/GNOME/gimp/-/work_items/10324

Code is ancient. Only works with linux.

[cb_in_lfk]

Well, rats.

Thank you for looking into this. Maybe I'll find some software that lets me map midi notes or CC to keystroke combinations and approach it that way. If so, I'll post my findings.

Cheers and HNY