sustain pedal
Depends on how you would expect it to work?
If the pedal is sending CC messages with a value of 0, 127 (or somewhere in between) then you can assign this to a macro that is controlling the release of an ADHSR modulationdevice.
Using this approach, if notes are already sounded once the “sustain” is activated, they should be affected too. And if you release the pedal, but keys are still held, the notes should continue to play. So, pretty close to the real thing?
Also: https://forum.renoise.com/t/how-do-i-make-the-sustain-pedal-affect-samples/42099