From 622f9a35b6918662ae1febd0ed49c52282260e1e Mon Sep 17 00:00:00 2001
From: "W. Black" <wmcblack@gmail.com>
Date: Fri, 29 Mar 2024 13:30:26 -0700
Subject: [PATCH] Torus benchmark (#12781)

# Objective

- Primitive meshing is suboptimal
- Improve primitive meshing

## Solution

- Add primitive meshing benchmark
- Allows measuring future improvements

---

First of a few PRs to refactor and improve primitive meshing.
---
 benches/Cargo.toml                   |  6 ++++++
 benches/benches/bevy_render/torus.rs | 15 +++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 benches/benches/bevy_render/torus.rs

diff --git a/benches/Cargo.toml b/benches/Cargo.toml
index e64a79d2b3..ee9d45953a 100644
--- a/benches/Cargo.toml
+++ b/benches/Cargo.toml
@@ -17,6 +17,7 @@ bevy_reflect = { path = "../crates/bevy_reflect" }
 bevy_tasks = { path = "../crates/bevy_tasks" }
 bevy_utils = { path = "../crates/bevy_utils" }
 bevy_math = { path = "../crates/bevy_math" }
+bevy_render = { path = "../crates/bevy_render" }
 
 [profile.release]
 opt-level = 3
@@ -62,6 +63,11 @@ name = "bezier"
 path = "benches/bevy_math/bezier.rs"
 harness = false
 
+[[bench]]
+name = "torus"
+path = "benches/bevy_render/torus.rs"
+harness = false
+
 [[bench]]
 name = "entity_hash"
 path = "benches/bevy_ecs/world/entity_hash.rs"
diff --git a/benches/benches/bevy_render/torus.rs b/benches/benches/bevy_render/torus.rs
new file mode 100644
index 0000000000..8ec81c8040
--- /dev/null
+++ b/benches/benches/bevy_render/torus.rs
@@ -0,0 +1,15 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+use bevy_render::mesh::TorusMeshBuilder;
+
+fn torus(c: &mut Criterion) {
+    c.bench_function("build_torus", |b| {
+        b.iter(|| black_box(TorusMeshBuilder::new(black_box(0.5),black_box(1.0))));
+    });
+}
+
+criterion_group!(
+    benches,
+    torus,
+);
+criterion_main!(benches);