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# Objective - Simplifies/clarifies the winit loop. - Fixes #12612. ## Solution The Winit loop runs following this flow: * NewEvents * Any number of other events, that can be 0, including RequestRedraw * AboutToWait Bevy also uses the UpdateMode, to define how the next loop has to run. It can be essentially: * Continuous, using ControlFlow::Wait for windowed apps, and ControlFlow::Poll for windowless apps * Reactive/ReactiveLowPower, using ControlFlow::WaitUntil with a specific wait delay The changes are made to follow this pattern, so that * NewEvents define if the WaitUntil has been canceled because we received a Winit event. * AboutToWait: * checks if the window has to be redrawn * otherwise calls app.update() if the WaitUntil timeout has elapsed * updates the ControlFlow accordingly To make the code more logical: * AboutToWait checks if any Bevy's RequestRedraw event has been emitted * create_windows is run every cycle, at the beginning of the loop * the ActiveState (that could be renamed ActivityState) is updated in AboutToWait, symmetrically for WillSuspend/WillResume * the AppExit events are checked every loop cycle, to exit the app early ## Platform-specific testing - [x] Windows - [x] MacOs - [x] Linux (x11) - [x] Linux (Wayland) - [x] Android - [x] iOS - [x] WASM/WebGL2 (Chrome) - [x] WASM/WebGL2 (Firefox) - [x] WASM/WebGL2 (Safari) - [x] WASM/WebGpu (Chrome) --------- Co-authored-by: François <francois.mockers@vleue.com> |
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| .. | ||
| clear_color.rs | ||
| low_power.rs | ||
| multiple_windows.rs | ||
| scale_factor_override.rs | ||
| screenshot.rs | ||
| transparent_window.rs | ||
| window_resizing.rs | ||
| window_settings.rs | ||