Canvas Support. Output Per Canvas.

[psyirius]

Since OBS 31.1.0 there is a canvas system in OBS, this allows plugins to create extra canvas, like the Aitum Vertical plugin does.

It'd be super flexible if this plugin support the new Canvas API to support multiple canvases.

[KaleidoVR]

This is becoming increasingly important with OBS’s multi-canvas system now in active use.
In its current state, Spout appears to assume a single render context. When additional canvases are present (e.g. Aitum Stream Suite / Vertical), Spout receivers are instantiated per canvas, which leads to repeated sender resets and GPU memory leaks over time.

Proper Canvas API support (or safe resource sharing / cleanup per canvas) would likely resolve these issues and make Spout compatible with modern OBS multi-outputs.

Spout receiver resets:

[win_spout] [Spout2 TITS] Sender T.I.T.S. Spout Sender has changed / gone away. Resetting
[win_spout] [Spout2 TITS] No active Spout cameras
[win_spout] [Spout2 vTubeStudio] Sender VTubeStudioSpout has changed / gone away. Resetting
[win_spout] [Spout2 vTubeStudio] No active Spout cameras

Multiple Spout initializations:

[win_spout] Opened DX11
[win_spout] win-spout loaded!
[win_spout] [(null)] initialising spout source
[win_spout] [(null)] initialising spout source

[psyirius]

I could send a PR for this.

But my fork has a lot of changes than needed.

If anyone interested in getting their hands on it now

Check the prep branch of https://github.com/obzessed/obs-spout2-plugin

Clone it and compile yourself.

I made it to support one of my gig which is heavy use of multicanvas with resolume.