cbe1688dcd
Now the distinguishing factor will be their module path, removing the need to rename the group itself if it switches modules.
100 lines
2.9 KiB
Rust
100 lines
2.9 KiB
Rust
use bevy_ecs::prelude::*;
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use bevy_ecs::system::SystemState;
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use core::hint::black_box;
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use criterion::*;
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use glam::*;
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criterion_group!(benches, iter_frag_empty);
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#[derive(Component, Default)]
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struct Table<const X: usize = 0>(usize);
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#[derive(Component, Default)]
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#[component(storage = "SparseSet")]
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struct Sparse<const X: usize = 0>(usize);
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fn flip_coin() -> bool {
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rand::random::<bool>()
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}
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fn iter_frag_empty(c: &mut Criterion) {
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let mut group = c.benchmark_group("iter_fragmented(4096)_empty");
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group.warm_up_time(core::time::Duration::from_millis(500));
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group.measurement_time(core::time::Duration::from_secs(4));
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group.bench_function("foreach_table", |b| {
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let mut world = World::new();
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spawn_empty_frag_archetype::<Table>(&mut world);
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let mut q: SystemState<Query<(Entity, &Table)>> =
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SystemState::<Query<(Entity, &Table<0>)>>::new(&mut world);
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let query = q.get(&world);
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b.iter(move || {
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let mut res = 0;
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query.iter().for_each(|(e, t)| {
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res += e.to_bits();
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black_box(t);
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});
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});
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});
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group.bench_function("foreach_sparse", |b| {
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let mut world = World::new();
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spawn_empty_frag_archetype::<Sparse>(&mut world);
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let mut q: SystemState<Query<(Entity, &Sparse)>> =
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SystemState::<Query<(Entity, &Sparse<0>)>>::new(&mut world);
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let query = q.get(&world);
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b.iter(move || {
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let mut res = 0;
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query.iter().for_each(|(e, t)| {
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res += e.to_bits();
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black_box(t);
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});
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});
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});
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group.finish();
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fn spawn_empty_frag_archetype<T: Component + Default>(world: &mut World) {
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for i in 0..65536 {
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let mut e = world.spawn_empty();
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if flip_coin() {
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e.insert(Table::<1>(0));
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}
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if flip_coin() {
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e.insert(Table::<2>(0));
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}
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if flip_coin() {
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e.insert(Table::<3>(0));
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}
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if flip_coin() {
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e.insert(Table::<4>(0));
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}
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if flip_coin() {
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e.insert(Table::<5>(0));
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}
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if flip_coin() {
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e.insert(Table::<6>(0));
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}
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if flip_coin() {
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e.insert(Table::<7>(0));
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}
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if flip_coin() {
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e.insert(Table::<8>(0));
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}
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if flip_coin() {
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e.insert(Table::<9>(0));
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}
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if flip_coin() {
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e.insert(Table::<10>(0));
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}
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if flip_coin() {
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e.insert(Table::<11>(0));
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}
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if flip_coin() {
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e.insert(Table::<12>(0));
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}
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e.insert(T::default());
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if i != 0 {
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e.despawn();
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}
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}
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}
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}
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