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eframe error handling (#2433)

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* eframe::run_native: return errors instead of crashing

* Detect and handle glutin errors

* egui_demo_app: silence wgpu log spam

* Add trace logs for why eframe is shutting down

* Fix: only save App state once on Mac

* Handle Winit failure

* Log where we load app state from

* Don't panic on zero-sized window

* Clamp loaded window size to not be too tiny to see

* Simplify code: more shared code in window_builder

* Improve code readability

* Fix wasm32 build

* fix android

* Update changelog
This commit is contained in:
Emil Ernerfeldt
2022-12-12 15:16:32 +01:00
committed by GitHub
parent 1437ec8903
commit cb77458f70
27 changed files with 249 additions and 162 deletions
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39
crates/eframe/src/lib.rs
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@@ -127,7 +127,7 @@ pub async fn start_web(
canvas_id: &str,
web_options: WebOptions,
app_creator: AppCreator,
) -> Result<AppRunnerRef, wasm_bindgen::JsValue> {
) -> std::result::Result<AppRunnerRef, wasm_bindgen::JsValue> {
let handle = web::start(canvas_id, web_options, app_creator).await?;
Ok(handle)
@@ -174,9 +174,16 @@ mod native;
/// }
/// }
/// ```
///
/// # Errors
/// This function can fail if we fail to set up a graphics context.
#[cfg(not(target_arch = "wasm32"))]
#[allow(clippy::needless_pass_by_value)]
pub fn run_native(app_name: &str, native_options: NativeOptions, app_creator: AppCreator) {
pub fn run_native(
app_name: &str,
native_options: NativeOptions,
app_creator: AppCreator,
) -> Result<()> {
let renderer = native_options.renderer;
#[cfg(not(feature = "__screenshot"))]
@@ -189,17 +196,41 @@ pub fn run_native(app_name: &str, native_options: NativeOptions, app_creator: Ap
#[cfg(feature = "glow")]
Renderer::Glow => {
tracing::debug!("Using the glow renderer");
native::run::run_glow(app_name, native_options, app_creator);
native::run::run_glow(app_name, native_options, app_creator)
}
#[cfg(feature = "wgpu")]
Renderer::Wgpu => {
tracing::debug!("Using the wgpu renderer");
native::run::run_wgpu(app_name, native_options, app_creator);
native::run::run_wgpu(app_name, native_options, app_creator)
}
}
}
// ----------------------------------------------------------------------------
/// The different problems that can occur when trying to run `eframe`.
#[derive(thiserror::Error, Debug)]
pub enum EframeError {
#[cfg(not(target_arch = "wasm32"))]
#[error("winit error: {0}")]
Winit(#[from] winit::error::OsError),
#[cfg(all(feature = "glow", not(target_arch = "wasm32")))]
#[error("glutin error: {0}")]
Glutin(#[from] glutin::error::Error),
#[cfg(all(feature = "glow", not(target_arch = "wasm32")))]
#[error("Found no glutin configs matching the template: {0:?}")]
NoGlutinConfigs(glutin::config::ConfigTemplate),
#[cfg(feature = "wgpu")]
#[error("WGPU error: {0}")]
Wgpu(#[from] wgpu::RequestDeviceError),
}
pub type Result<T> = std::result::Result<T, EframeError>;
// ---------------------------------------------------------------------------
/// Profiling macro for feature "puffin"