//! Run with a real GL context: xvfb-run -a cargo run --example preview_depth_probe.
use std::sync::{Arc, Mutex};
struct Quit;
impl eframe::App for Quit {
    fn update(&mut self, ctx: &eframe::egui::Context, _: &mut eframe::Frame) {
        ctx.send_viewport_cmd(eframe::egui::ViewportCommand::Close);
    }
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
    let outcome = Arc::new(Mutex::new(None));
    let result = outcome.clone();
    let options = eframe::NativeOptions {
        viewport: eframe::egui::ViewportBuilder::default().with_inner_size([64., 64.]),
        ..paperdoll_renderer::preview_gl::native_options()
    };
    eframe::run_native(
        "Paperdoll depth regression",
        options,
        Box::new(move |creation| {
            let test = creation
                .gl
                .as_ref()
                .ok_or_else(|| "geen Glow-context".to_string())
                .and_then(|gl| unsafe {
                    paperdoll_renderer::preview_gl::depth_regression_probe(gl)
                        .and_then(|_| paperdoll_renderer::production::map_regression_probe(gl))
                        .and_then(|_| paperdoll_renderer::production::pbo_sync_parity_probe(gl))
                });
            *result.lock().unwrap() = Some(test);
            Ok(Box::new(Quit))
        }),
    )?;
    outcome
        .lock()
        .unwrap()
        .take()
        .ok_or("GPU-test is niet uitgevoerd")??;
    Ok(())
}