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// Prevents additional console window on Windows in release, DO NOT REMOVE!!
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
// borrowed from https://github.com/skyline69/balatro-mod-manager
#[cfg(target_os = "linux")]
fn configure_display_backend() -> Option<String> {
use std::env;
let set_env_if_absent = |key: &str, value: &str| {
if env::var_os(key).is_none() {
// Safety: called during startup before any threads are spawned, so mutating the
// process environment is safe.
unsafe { env::set_var(key, value) };
}
};
let on_wayland = env::var_os("WAYLAND_DISPLAY").is_some()
|| matches!(
env::var("XDG_SESSION_TYPE"),
Ok(v) if v.eq_ignore_ascii_case("wayland")
);
if !on_wayland {
return None;
}
// Allow users to explicitly keep Wayland if they know their setup is stable.
let allow_wayland = matches!(
env::var("OC_ALLOW_WAYLAND"),
Ok(v) if matches!(v.to_ascii_lowercase().as_str(), "1" | "true" | "yes")
);
if allow_wayland {
return Some("Wayland session detected; respecting OC_ALLOW_WAYLAND=1".into());
}
// Prefer XWayland when available to avoid Wayland protocol errors seen during startup.
if env::var_os("DISPLAY").is_some() {
set_env_if_absent("WINIT_UNIX_BACKEND", "x11");
set_env_if_absent("GDK_BACKEND", "x11");
set_env_if_absent("WEBKIT_DISABLE_DMABUF_RENDERER", "1");
return Some(
"Wayland session detected; forcing X11 backend to avoid compositor protocol errors. \
Set OC_ALLOW_WAYLAND=1 to keep native Wayland."
.into(),
);
}
set_env_if_absent("WEBKIT_DISABLE_DMABUF_RENDERER", "1");
Some(
"Wayland session detected without X11; leaving Wayland enabled (set WINIT_UNIX_BACKEND/GDK_BACKEND manually if needed)."
.into(),
)
}
fn main() {
#[cfg(target_os = "linux")]
{
if let Some(backend_note) = configure_display_backend() {
eprintln!("{backend_note:?}");
}
}
opencode_lib::run()
}
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