Group stress test examples (bevyengine#4289)

# Objective

- Several examples are useful for qualitative tests of Bevy's performance
- By contrast, these are less useful for learning material: they are often relatively complex and have large amounts of setup and are performance optimized.

## Solution

- Move bevymark, many_sprites and many_cubes into the new stress_tests example folder
- Move contributors into the games folder: unlike the remaining examples in the 2d folder, it is not focused on demonstrating a clear feature.

Author: alice-i-cecile

Cargo.toml

@@ -127,14 +127,6 @@ name = "hello_world"
 path = "examples/hello_world.rs"
 
 # 2D Rendering
-[[example]]
-name = "contributors"
-path = "examples/2d/contributors.rs"
-
-[[example]]
-name = "many_sprites"
-path = "examples/2d/many_sprites.rs"
-
 [[example]]
 name = "move_sprite"
 path = "examples/2d/move_sprite.rs"
@@ -188,10 +180,6 @@ path = "examples/3d/lighting.rs"
 name = "load_gltf"
 path = "examples/3d/load_gltf.rs"
 
-[[example]]
-name = "many_cubes"
-path = "examples/3d/many_cubes.rs"
-
 [[example]]
 name = "msaa"
 path = "examples/3d/msaa.rs"
@@ -414,15 +402,19 @@ path = "examples/ecs/timers.rs"
 # Games
 [[example]]
 name = "alien_cake_addict"
-path = "examples/game/alien_cake_addict.rs"
+path = "examples/games/alien_cake_addict.rs"
 
 [[example]]
 name = "breakout"
-path = "examples/game/breakout.rs"
+path = "examples/games/breakout.rs"
+
+[[example]]
+name = "contributors"
+path = "examples/games/contributors.rs"
 
 [[example]]
 name = "game_menu"
-path = "examples/game/game_menu.rs"
+path = "examples/games/game_menu.rs"
 
 # Input
 [[example]]
@@ -524,10 +516,29 @@ path = "examples/shader/animate_shader.rs"
 name = "compute_shader_game_of_life"
 path = "examples/shader/compute_shader_game_of_life.rs"
 
-# Tools
+# Stress tests
+
 [[example]]
 name = "bevymark"
-path = "examples/tools/bevymark.rs"
+path = "examples/stress_tests/bevymark.rs"
+
+[[example]]
+name = "many_cubes"
+path = "examples/stress_tests/many_cubes.rs"
+
+[[example]]
+name = "many_lights"
+path = "examples/stress_tests/many_lights.rs"
+
+[[example]]
+name = "many_sprites"
+path = "examples/stress_tests/many_sprites.rs"
+
+[[example]]
+name = "transform_hierarchy"
+path = "examples/stress_tests/transform_hierarchy.rs"
+
+# Tools
 
 [[example]]
 name = "scene_viewer"
@@ -614,12 +625,3 @@ icon = "@mipmap/ic_launcher"
 build_targets = ["aarch64-linux-android", "armv7-linux-androideabi"]
 min_sdk_version = 16
 target_sdk_version = 29
-
-# Stress Tests
-[[example]]
-name = "many_lights"
-path = "examples/stress_tests/many_lights.rs"
-
-[[example]]
-name = "transform_hierarchy"
-path = "examples/stress_tests/transform_hierarchy.rs"

examples/README.md

@@ -51,6 +51,7 @@ git checkout v0.4.0
   - [Reflection](#reflection)
   - [Scene](#scene)
   - [Shaders](#shaders)
+  - [Stress Tests](#stress-tests)
   - [Tests](#tests)
   - [Tools](#tools)
   - [Transforms](#transforms)
@@ -67,7 +68,7 @@ git checkout v0.4.0
   - [WASM](#wasm)
     - [Setup](#setup-2)
     - [Build & Run](#build--run-2)
-- [Stress Tests](#stress-tests)
+    - [Loading Assets](#loading-assets)
 
 # The Bare Minimum
 
@@ -85,8 +86,6 @@ Example | File | Description
 
 Example | File | Description
 --- | --- | ---
-`contributors` | [`2d/contributors.rs`](./2d/contributors.rs) | Displays each contributor as a bouncy bevy-ball!
-`many_sprites` | [`2d/many_sprites.rs`](./2d/many_sprites.rs) | Displays many sprites in a grid arragement! Used for performance testing.
 `move_sprite` | [`2d/move_sprite.rs`](./2d/move_sprite.rs) | Changes the transform of a sprite.
 `mesh2d` | [`2d/mesh2d.rs`](./2d/mesh2d.rs) | Renders a 2d mesh
 `mesh2d_manual` | [`2d/mesh2d_manual.rs`](./2d/mesh2d_manual.rs) | Renders a custom mesh "manually" with "mid-level" renderer apis.
@@ -105,7 +104,6 @@ Example | File | Description
 `3d_scene` | [`3d/3d_scene.rs`](./3d/3d_scene.rs) | Simple 3D scene with basic shapes and lighting
 `lighting` | [`3d/lighting.rs`](./3d/lighting.rs) | Illustrates various lighting options in a simple scene
 `load_gltf` | [`3d/load_gltf.rs`](./3d/load_gltf.rs) | Loads and renders a gltf file as a scene
-`many_cubes` | [`3d/many_cubes.rs`](./3d/many_cubes.rs) | Simple benchmark to test per-entity draw overhead
 `msaa` | [`3d/msaa.rs`](./3d/msaa.rs) | Configures MSAA (Multi-Sample Anti-Aliasing) for smoother edges
 `orthographic` | [`3d/orthographic.rs`](./3d/orthographic.rs) | Shows how to create a 3D orthographic view (for isometric-look games or CAD applications)
 `parenting` | [`3d/parenting.rs`](./3d/parenting.rs) | Demonstrates parent->child relationships and relative transformations
@@ -199,9 +197,10 @@ Example | File | Description
 
 Example | File | Description
 --- | --- | ---
-`alien_cake_addict` | [`game/alien_cake_addict.rs`](./game/alien_cake_addict.rs) | Eat the cakes. Eat them all. An example 3D game
-`breakout` | [`game/breakout.rs`](./game/breakout.rs) | An implementation of the classic game "Breakout"
-`game_menu` | [`game/game_menu.rs`](./game/game_menu.rs) | A simple game menu
+`alien_cake_addict` | [`games/alien_cake_addict.rs`](./games/alien_cake_addict.rs) | Eat the cakes. Eat them all. An example 3D game
+`breakout` | [`games/breakout.rs`](./games/breakout.rs) | An implementation of the classic game "Breakout"
+`contributors` | [`games/contributors.rs`](./games/contributors.rs) | Displays each contributor as a bouncy bevy-ball!
+`game_menu` | [`games/game_menu.rs`](./games/game_menu.rs) | A simple game menu
 
 ## Input
 
@@ -247,6 +246,24 @@ Example | File | Description
 `compute_shader_game_of_life` | [`shader/compute_shader_game_of_life.rs`](./shader/compute_shader_game_of_life.rs) | A compute shader simulating Conway's Game of Life
 `shader_defs` | [`shader/shader_defs.rs`](./shader/shader_defs.rs) | Demonstrates creating a custom material that uses "shaders defs" (a tool to selectively toggle parts of a shader)
 
+## Stress Tests
+
+These examples are used to test the performance and stability of various parts of the engine in an isolated way.
+
+Due to the focus on performance it's recommended to run the stress tests in release mode:
+
+```sh
+cargo run --release --example <example name>
+```
+
+Example | File | Description
+--- | --- | ---
+`bevymark` | [`stress_tests/bevymark.rs`](./stress_tests/bevymark.rs) | A heavy sprite rendering workload to benchmark your system with Bevy
+`many_cubes` | [`stress_tests/many_cubes.rs`](./stress_tests/many_cubes.rs) | Simple benchmark to test per-entity draw overhead
+`many_lights` | [`stress_tests/many_lights.rs`](./stress_tests/many_lights.rs) | Simple benchmark to test rendering many point lights. Run with `WGPU_SETTINGS_PRIO=webgl2` to restrict to uniform buffers and max 256 lights.
+`many_sprites` | [`stress_tests/many_sprites.rs`](./stress_tests/many_sprites.rs) | Displays many sprites in a grid arragement! Used for performance testing.
+`transform_hierarchy.rs` | [`stress_tests/transform_hierarchy.rs`](./stress_tests/transform_hierarchy.rs) | Various test cases for hierarchy and transform propagation performance
+
 ## Tests
 
 Example | File | Description
@@ -257,7 +274,6 @@ Example | File | Description
 
 Example | File | Description
 --- | --- | ---
-`bevymark` | [`tools/bevymark.rs`](./tools/bevymark.rs) | A heavy sprite rendering workload to benchmark your system with Bevy
 `scene_viewer` | [`tools/scene_viewer.rs`](./tools/scene_viewer.rs) | A simple way to view glTF models with Bevy. Just run `cargo run --release --example scene_viewer -- /path/to/model.gltf#Scene0`, replacing the path as appropriate. With no arguments it will load the FieldHelmet glTF model from the repository assets subdirectory.
 
 ## Transforms
@@ -431,18 +447,3 @@ ruby -run -ehttpd examples/wasm
 To load assets, they need to be available in the folder examples/wasm/assets. Cloning this
 repository will set it up as a symlink on Linux and macOS, but you will need to manually move
 the assets on Windows.
-
-# Stress Tests
-
-These examples are used to test the performance and stability of various parts of the engine in an isolated way.
-
-Due to the focus on performance it's recommended to run the stress tests in release mode:
-
-```sh
-cargo run --release --example <example name>
-```
-
-Example | File | Description
---- | --- | ---
-`many_lights` | [`stress_tests/many_lights.rs`](./stress_tests/many_lights.rs) | Simple benchmark to test rendering many point lights. Run with `WGPU_SETTINGS_PRIO=webgl2` to restrict to uniform buffers and max 256 lights.
-`transform_hierarchy.rs` | [`stress_tests/transform_hierarchy.rs`](./stress_tests/transform_hierarchy.rs) | Various test cases for hierarchy and transform propagation performance