Request redraw from background thread

[maxime-tournier]

I have a background task that is spawn based on user input, in the callback passed to render_loop. Since I'm using the Wait control flow, I am trying to request a redraw after that task has completed.

There seems to be winit::window::Window::request_redraw for doing that, however the winit Window is no longer accessible once the three_d::window::Window is created. One could think of exposing this functionality to the render_loop callback through its frame_input, however this feels quite contrived to say the least.

There is also winit::event_loop::EventLoop::create_proxy that can be used to send user events to the event loop, possibly from other threads. So one could simply define some UserEvent case and have Window::render_loop to request a redraw in this case (I implemented this in my fork).

Are there other approaches? What would be the best way to achieve this?

[asny]

You could avoid the three_d::window::Window, it's basically just a thin shell around the winit window, and instead use the winit window directly. Then you have full access to all winit functionality. See the winit_window example for more details.

[maxime-tournier]

I see, thanks!