Working on an art installation that uses capacitive touch to manipulate animations over a matrix of LEDs. I have capacitive touch boards (adafruit MPR121) connected to a microcontroller (adafruit RP2040 QTpy). Using circuit python, I am able to use the HID module to make the board emit keyboard presses. I can then map these keyboard presses to inputs into ISF shaders to change the variables.
Each scene has a different ISF shader. Each ISF shader has a variety of inputs I would like to control with keyboard controls. My keyboard controls are not aware of the current scene. How can I add controls so that when "scene A" is active, the "1" key manipulates a variable "speed" on shader "foo", but when I am in "scene B", the "1" key manipulates a variable "amplitude" on shader "bar"?