Image operations

1use oa::render::{blit, clear, save_texture_file, texture_from_file};
2use oa::{Engine, Result};
3use std::path::PathBuf;
4
5fn main() -> Result<()> {
6	let args: Vec<String> = std::env::args().collect();
7	let default_input = oa::Path::asset_rel("image/coverMl.jpg");
8	let in_path: PathBuf = args
9		.get(1)
10		.map(PathBuf::from)
11		.unwrap_or(default_input.into());
12	let out_path: PathBuf = args
13		.get(2)
14		.map(PathBuf::from)
15		.unwrap_or_else(|| PathBuf::from("/tmp/oa_viewport_batch.png"));
16
17	// ── Engine bring-up — headless (pure compute) ─────────────────────────────
18	// No surface, no VK_KHR_swapchain.  Any GPU admitted by the driver works.
19	let engine = Engine::builder().build()?;
20
21	eprintln!(
22		"tu_viewer_image_headless: {} → {}",
23		in_path.display(),
24		out_path.display()
25	);
26
27	// ── Producer: decode packed pixels and upload directly as a Texture ─────
28	let tex = texture_from_file(&engine, &in_path)?;
29
30	// ── Sink: save to file (readback + encode + write) ────────────────────────
31	save_texture_file(&tex, &out_path, 90)?;
32	println!(
33		"OK: {}×{}  {} → {}",
34		tex.width(),
35		tex.height(),
36		in_path.display(),
37		out_path.display()
38	);
39
40	// ── Smoke: blit (GPU copy — should round-trip to original) ───────────────
41	let blit_path = PathBuf::from("/tmp/oa_viewport_batch_blit.png");
42	let clone = blit(&tex)?;
43	save_texture_file(&clone, &blit_path, 90)?;
44	println!("OK: Blit → {}", blit_path.display());
45
46	// ── Smoke: clear (solid red) ──────────────────────────────────────────────
47	let clear_path = PathBuf::from("/tmp/oa_viewport_batch_clear.png");
48	let red = clear(&clone, oa::Color::new(0.95, 0.10, 0.10, 1.0))?;
49	save_texture_file(&red, &clear_path, 90)?;
50	println!("OK: clear(red) → {}", clear_path.display());
51
52	Ok(())
53}
54