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Add a stats subcommand: scene characterisation with no GPU device #74

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Add a stats subcommand: scene characterisation with no GPU device #74

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21 changes: 21 additions & 0 deletions renderer/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,9 @@
//! threert-render serve [--presets DIR] # JSON-lines jobs on stdin, keeps the GPU device and game runtimes warm
//! threert-render play | live <bundle.js> # native window / headless real-time (view.rs, live/)
//! threert-render setup <bundle.js> # setup cost in the embedded runtime
//! threert-render stats <bundle.js> [--assets DIR] [--room id] [--seed n]
//! # scene characterisation without a GPU: objects, geometries,
//! # materials, textures, triangles, emitters
//! threert-render edit-check <bundle.js> --events '[{"type":..,"payload":..}]'
//! threert-render info # print adapter info

Expand Down Expand Up @@ -237,6 +240,24 @@ fn main() -> Result<()> {
let w = host.world.borrow();
println!("{}", serde_json::json!({ "engine": "quickjs", "bundle_load_ms": load_ms, "setup_ms": setup_ms, "objects": w.objects.len(), "geometries": w.geometries.len(), "materials": w.materials.len(), "textures": w.textures.len(), "info": host.info }));
}
"stats" => {
// Scene characterisation without a GPU: the world is built in the embedded runtime, then the CPU
// scene build + prepare count the geometry and the emitters (the same `prepare_as` the render and
// live paths run, with the hardware-traversal flags). No adapter, no device, no upload.
let t0 = Instant::now();
let host = ScriptHost::new(&std::fs::read_to_string(args.get(2).ok_or_else(|| anyhow!("game bundle required"))?)?)?;
let load_ms = t0.elapsed().as_secs_f64() * 1000.0;
let assets = PathBuf::from(flag("--assets").unwrap_or_else(|| ".".into()));
let setup_ms = host.setup(&flag("--room").unwrap_or_else(|| "local".into()), flag("--seed").map(|v| v.parse()).transpose()?)?;
let w = host.world.borrow();
let tb = Instant::now();
let mut sc = scene::build(&w, &assets, &presets, None)?;
let prep = threert_render::prepare_as(true, false, &mut sc, &mut vec![]);
let prepare_ms = tb.elapsed().as_secs_f64() * 1000.0;
// Same counts the render stats report (scene.rs `stats`): flat + instanced triangles.
let triangles = sc.stats.get("triangles").map_or(sc.tris.len() as u64, |t| *t as u64);
println!("{}", serde_json::json!({ "engine": "quickjs", "bundle_load_ms": load_ms, "setup_ms": setup_ms, "prepare_ms": prepare_ms, "objects": w.objects.len(), "geometries": w.geometries.len(), "materials": w.materials.len(), "textures": w.textures.len(), "triangles": triangles, "flat_triangles": sc.tris.len(), "instances": sc.instances.len(), "instanced_triangles": sc.stats.get("instanced_triangles").copied().unwrap_or(0.0) as u64, "emitters": prep.emitter_tris.len(), "info": host.info }));
}
"edit-check" => {
// threert-render edit-check <bundle.js> [--assets DIR] --events '[{"type":..,"payload":..}, ..]'
// The events' parameter edits, applied in place, must leave the GPU tables exactly as a fresh build of the
Expand Down