rendering stops not at end of song when using hydra for bpm changes

[Jenoki]

I think this is related to the fix that was applied for this issue here:

Strange Things Happening, Signalfollower>Bpm

hi. i just messed around with the signal follower mapped to Master BPM. oh, and master bpm being automated with the automation envelope editor. oh, and LFO controlling the signal follower max amount. selected the whole pattern, rendered, noticed that most of the time the rendering process goes down to 32bpm - which seems like there’s some code set to value bpm-automation over metadevice->bpm-control. are we supposed to enjoy these new perks in a live situation only, or can renoise be used to r…

@taktik

Hard to explain why, but unfortunately we can’t fix that. The renderer needs to look up the tempo and stuff for a song in order to guess how long it is. It can’t do so when the source of the BPM changes within the song itself - unpredictably.

I guess it also would be a shame to disallow modulating the BPM from meta devices, so we can probably live with the quirky render behavior?