egui/crates/egui_demo_app/src/main.rs

//! Demo app for egui

#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release

// When compiling natively:
fn main() -> Result<(), eframe::EframeError> {
    {
        // Silence wgpu log spam (https://github.com/gfx-rs/wgpu/issues/3206)
        let mut rust_log = std::env::var("RUST_LOG").unwrap_or_else(|_| "info".to_owned());
        for loud_crate in ["naga", "wgpu_core", "wgpu_hal"] {
            if !rust_log.contains(&format!("{loud_crate}=")) {
                rust_log += &format!(",{loud_crate}=warn");
            }
        }
        std::env::set_var("RUST_LOG", rust_log);
    }

    // Log to stdout (if you run with `RUST_LOG=debug`).
    tracing_subscriber::fmt::init();

    let options = eframe::NativeOptions {
        drag_and_drop_support: true,

        initial_window_size: Some([1280.0, 1024.0].into()),

        #[cfg(feature = "wgpu")]
        renderer: eframe::Renderer::Wgpu,

        ..Default::default()
    };
    eframe::run_native(
        "egui demo app",
        options,
        Box::new(|cc| Box::new(egui_demo_app::WrapApp::new(cc))),
    )
}