I made this using the royalty-free AKWF single-cycle waveform library.
I used a "perfect" triangle wave, but you could replace the waves with any wave you like, so treat this also as a template.
With the first macro wheel, you can change the sound output from a wonky 9/11/13 chord (all the way left), perfect unison for basic lead sounds at 50% (you can do slight detuning from this point also by pushing the macro wheel slightly left or right), and a minor 7 chord (all the way right). There's also a "root sub" macro for adding a root note sub bass to the mix as desired, makes the chords sound more full. The idea is to have a "normal" chord to the right (minor 7 in this case), and its perfect interval-inverted opposite on the far left – very different-sounding but fundamentally closely related chords that share a root (assuming you have the sub bass root turned up). Mess with it a bit and listen to hear what I mean.
The inverted versions of each chord can be pretty interesting; it's often the case that the inversion of a minor or major chord results in the opposite – so the opposite of the maj7 is a (I'm only guessing at the chord name) minor 9th chord of the 2nd or 3rd inversion (?), with dissonant notes added, something like that. In some cases having the sub bass root playing alongside the inverted chord will sound odd, a few of these are technically what jazz theorists call "upper structures", chords in two keys at once (which won't sound to everyone's taste!), others are just inversions of common chords.
Also includes macro control of filter cutoff/res/drive for all samples, attack/release, and chorus amount (no chorus makes for a "pure" triangle sound).
You can adjust the individual pitch bend amounts for each mod track to create different chords. You could also make a secondary chord switcher macro that does different intervals, whatever you like. One thing I might try with a new version is setting every pitch bend amount for each mod track to, say, 17, and then using different quantities in the macro parameter automation window for each macro wheel to set different ranges to create different chords, that way you could have a macro that does major 7 chord, a major 9, a min 11, whatever you want (and their interval inversions at the other end of the macro's range). Anyway I'll be adding more, and more complex, versions soon*
There are several different ways to achieve a similar thing in Renoise, the main advantage to me here in using these is the ability to have a gliding mono instrument that can produce chord sounds at will, mostly for that classic breathy, bending elevator chord soaked in reverb effect (there's one a lot like it in my JX-10 collection and another in the EM-1 collection, both posted here, it's a sound I use a lot in downtempo chill type stuff).
*maj9, min9, different min7 versions, new maj7 added
*sound example added – this example is of a repeated phrase I created for the maj9 version with res turned up, the filter sweeping up and down and drive turned up. The result is that different parts of the chord are revealed as the filter is swept, a pretty beautiful effect if you ask me.