egui/crates/egui_demo_app/src/main.rs

86 lines
2.6 KiB
Rust

//! Demo app for egui
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
#![allow(rustdoc::missing_crate_level_docs)] // it's an example
#![allow(clippy::never_loop)] // False positive
// When compiling natively:
fn main() -> eframe::Result {
for arg in std::env::args().skip(1) {
match arg.as_str() {
"--profile" => {
#[cfg(feature = "puffin")]
start_puffin_server();
#[cfg(not(feature = "puffin"))]
panic!("Unknown argument: {arg} - you need to enable the 'puffin' feature to use this.");
}
_ => {
panic!("Unknown argument: {arg}");
}
}
}
{
// Silence wgpu log spam (https://github.com/gfx-rs/wgpu/issues/3206)
let mut rust_log = std::env::var("RUST_LOG").unwrap_or_else(|_| {
if cfg!(debug_assertions) {
"debug".to_owned()
} 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);
}
env_logger::init(); // Log to stderr (if you run with `RUST_LOG=debug`).
let options = eframe::NativeOptions {
viewport: egui::ViewportBuilder::default()
.with_inner_size([1280.0, 1024.0])
.with_drag_and_drop(true),
#[cfg(feature = "wgpu")]
renderer: eframe::Renderer::Wgpu,
..Default::default()
};
eframe::run_native(
"egui demo app",
options,
Box::new(|cc| Ok(Box::new(egui_demo_app::WrapApp::new(cc)))),
)
}
#[cfg(feature = "puffin")]
fn start_puffin_server() {
puffin::set_scopes_on(true); // tell puffin to collect data
match puffin_http::Server::new("127.0.0.1:8585") {
Ok(puffin_server) => {
log::info!("Run: cargo install puffin_viewer && puffin_viewer --url 127.0.0.1:8585");
std::process::Command::new("puffin_viewer")
.arg("--url")
.arg("127.0.0.1:8585")
.spawn()
.ok();
// We can store the server if we want, but in this case we just want
// it to keep running. Dropping it closes the server, so let's not drop it!
#[allow(clippy::mem_forget)]
std::mem::forget(puffin_server);
}
Err(err) => {
log::error!("Failed to start puffin server: {err}");
}
};
}