diff --git a/egui_glium/src/backend.rs b/egui_glium/src/backend.rs index d93783edc..e11286365 100644 --- a/egui_glium/src/backend.rs +++ b/egui_glium/src/backend.rs @@ -102,33 +102,44 @@ pub fn run( let mut clipboard = init_clipboard(); event_loop.run(move |event, _, control_flow| { - *control_flow = glutin::event_loop::ControlFlow::Wait; - - match event { - glutin::event::Event::RedrawRequested(_) => { - let egui_start = Instant::now(); - raw_input.time = start_time.elapsed().as_nanos() as f64 * 1e-9; - raw_input.seconds_since_midnight = Some(local_time_of_day()); - - let mut ui = ctx.begin_frame(raw_input.take()); - app.ui(&mut ui, &mut runner); - let (output, paint_jobs) = ctx.end_frame(); - - let frame_time = (Instant::now() - egui_start).as_secs_f64() as f32; - runner.frame_times.add(raw_input.time, frame_time); - - runner - .painter - .paint_jobs(&display, paint_jobs, &ctx.texture()); - - if runner.quit { - *control_flow = glutin::event_loop::ControlFlow::Exit - } else if runner.run_mode() == RunMode::Continuous || output.needs_repaint { + let mut redraw = || { + let egui_start = Instant::now(); + raw_input.time = start_time.elapsed().as_nanos() as f64 * 1e-9; + raw_input.seconds_since_midnight = Some(local_time_of_day()); + + let mut ui = ctx.begin_frame(raw_input.take()); + app.ui(&mut ui, &mut runner); + let (output, paint_jobs) = ctx.end_frame(); + + let frame_time = (Instant::now() - egui_start).as_secs_f64() as f32; + runner.frame_times.add(raw_input.time, frame_time); + + runner + .painter + .paint_jobs(&display, paint_jobs, &ctx.texture()); + + *control_flow = if runner.quit { + glutin::event_loop::ControlFlow::Exit + } else if runner.run_mode() == RunMode::Continuous { + display.gl_window().window().request_redraw(); + glutin::event_loop::ControlFlow::Poll + } else { + if output.needs_repaint { display.gl_window().window().request_redraw(); } + glutin::event_loop::ControlFlow::Wait + }; + + handle_output(output, &display, clipboard.as_mut()); + }; + + match event { + // Platform-dependent event handlers to workaround a winit bug + // See: https://github.com/rust-windowing/winit/issues/987 + // See: https://github.com/rust-windowing/winit/issues/1619 + glutin::event::Event::RedrawEventsCleared if cfg!(windows) => redraw(), + glutin::event::Event::RedrawRequested(_) if !cfg!(windows) => redraw(), - handle_output(output, &display, clipboard.as_mut()); - } glutin::event::Event::WindowEvent { event, .. } => { input_to_egui(event, clipboard.as_mut(), &mut raw_input, control_flow); display.gl_window().window().request_redraw(); // TODO: maybe only on some events?