47 lines
1.9 KiB
Rust
47 lines
1.9 KiB
Rust
#![feature(test)]
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extern crate test;
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use legion::prelude::*;
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use legion_transform::{local_to_world_system, prelude::*};
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use test::Bencher;
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#[bench]
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fn local_to_world_update_without_change(b: &mut Bencher) {
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let _ = env_logger::builder().is_test(true).try_init();
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let mut world = Universe::new().create_world();
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let system = local_to_world_system::build(&mut world);
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let ltw = LocalToWorld::identity();
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let t = Translation::new(1.0, 2.0, 3.0);
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let r = Rotation::from_euler_angles(1.0, 2.0, 3.0);
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let s = Scale(2.0);
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let nus = NonUniformScale::new(1.0, 2.0, 3.0);
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// Add N of every combination of transform types.
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let n = 1000;
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let _translation = *world.insert((), vec![(ltw, t); n]).first().unwrap();
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let _rotation = *world.insert((), vec![(ltw, r); n]).first().unwrap();
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let _scale = *world.insert((), vec![(ltw, s); n]).first().unwrap();
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let _non_uniform_scale = *world.insert((), vec![(ltw, nus); n]).first().unwrap();
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let _translation_and_rotation = *world.insert((), vec![(ltw, t, r); n]).first().unwrap();
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let _translation_and_scale = *world.insert((), vec![(ltw, t, s); n]).first().unwrap();
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let _translation_and_nus = *world.insert((), vec![(ltw, t, nus); n]).first().unwrap();
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let _rotation_scale = *world.insert((), vec![(ltw, r, s); n]).first().unwrap();
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let _rotation_nus = *world.insert((), vec![(ltw, r, nus); n]).first().unwrap();
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let _translation_rotation_scale = *world.insert((), vec![(ltw, t, r, s); n]).first().unwrap();
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let _translation_rotation_nus = *world.insert((), vec![(ltw, t, r, nus); n]).first().unwrap();
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// Run the system once outside the test (which should compute everything and it shouldn't be
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// touched again).
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system.run(&mut world);
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system.command_buffer_mut().write(&mut world);
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// Then time the already-computed updates.
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b.iter(|| {
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system.run(&mut world);
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system.command_buffer_mut().write(&mut world);
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});
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}
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