open-standards/wai/wai-rs/examples/int_splat_decode.rs

//! Decode a learned-splat dir (`splat_gs.bin` + `splat.json`, from
//! `tools/wai_int_splat_export.py`) → the integer attribute tensor; print the FNV-1a
//! attribute hash. Proves the Rust integer decode reproduces the Python integer
//! reference byte-for-byte (splat-equivalence).
//!
//!   cargo run --release --example int_splat_decode --features splat_int -- <dir>

use wai::int_hyper_synth::IntModel;
use wai::int_splat::decode;

fn main() {
    let dir = std::env::args().nth(1).expect("usage: int_splat_decode <dir>");
    let gs = IntModel::from_bytes(&std::fs::read(format!("{dir}/splat_gs.bin")).unwrap()).unwrap();
    let clip = decode(&gs, &std::fs::read(format!("{dir}/splat.json")).unwrap()).expect("decode");
    println!("{} gaussians × {} attrs ({}²)  attr_hash {:016x}", clip.s * clip.s, clip.n_attr, clip.s, clip.attr_hash());
}