Fix update rate issues in some hosts

[pdesaulniers]

For example, the UI feels very unresponsive in Ardour.

[ghost]

If i understand it correctly, same in bitwig 1.

[pdesaulniers]

Yup, it's very blocky in bitwig as well.

The rendering in DPF seems bound to the host's update rate, so we'd have to put the rendering on its own thread somehow. Haven't looked into it yet. Helm is one plugin that doesn't depend on the update
rate.

The UI is pretty fluid in jalv (LV2 host) at a rate of 60:

jalv.gtk -r 60 "https://github.com/pdesaulniers/spoonie-waveshaper"

[pdesaulniers]

OK, the UI should be smoother now :) My fix needs some more testing, though.

[pdesaulniers]

Could you confirm that my fix doesn't make bitwig explode on your computer, just so I can feel confident closing this issue? :)

[ghost]

sure; can try today (in 1 to 6 hours)

[ghost]

works fine

[pdesaulniers]

Sweet, closing this.

If ever the plugin makes some host crash, then this could be the culprit :p

[pdesaulniers]

Unfortunately, that fix caused some users to get a completely black UI. I still feel like it should be fluid in all hosts.

[pdesaulniers]

Let's forget this. AFAIK, running the UI on a separate thread would require some crazy error-prone hacks.