How to setup multi-view port support

[immutheprogrammer]

I can't figure out how to set up multi-viewport support does anyone have any tips?

[PathogenDavid]

I'm assuming you're asking in relation to this project.

It's not immediately apparent to me whether you're using the provided backends or a custom one. It seems like you're using a built-in one but you started writing a custom one?

Built-in backends

If you're using the built-in backends, I think you should just need to enable it in ImGuiLayer.initImGui by adding:

io.addConfigFlags(ImGuiConfigFlags.ViewportsEnable);    // Enable Multi-Viewport / Platform Windows

you might also want to add

io.addConfigFlags(ImGuiConfigFlags.DockingEnable);      // Enable Docking

to enable docking.

Custom backends

If you're making your own backend, I highly recommend writing a backend without multi-viewport support first.

From there, to add multiple viewport support the main thing you need to do is fill out the callbacks in ImGuiPlatformIO. I've also found it useful to study the differences between the backends in the main and docking branches.

I cannot give you specific advice on how to do this with imgui-java or whether it's even possible given their bindings. I'd suggest asking them directly if you run into problems.

I don't believe there's really any documentation yet for implementing a custom platform backend because the feature is still in development.