bevy/examples/stress_tests
Rob Parrett cbadc31d19
Use a consistent scale factor and resolution in stress tests (#10474)
# Objective

Related to #10472.

Not having a hardcoded scale factor makes comparing results from these
stress tests difficult.

Contributors using high dpi screens may be rendering 4x as many pixels
as others (or more). Stress tests may have different behavior when moved
from one monitor in a dual setup to another. At very high resolutions,
different parts of the engine / hardware are being stressed.

1080p is also a far more common resolution for gaming.

## Solution

Use a consistent 1080p with `scale_factor_override: 1.0` everywhere.

In #9903, this sort of change was added specifically to `bevymark` and
`many_cubes` but it makes sense to do it everywhere.

## Discussion

- Maybe we should have a command line option, environment variable, or
`CI_TESTING_CONFIG` option for 1080p / 1440p / 4k.

- Will these look odd (small text?) when screenshotted and shown in the
example showcase? The aspect ratio is the same, but they will be
downscaled from 1080p instead of ~720p.

- Maybe there are other window properties that should be consistent
across stress tests. e.g. `resizable: false`.

- Should we add a `stress_test_window(title)` helper or something?

- Bevymark (pre-10472) was intentionally 800x600 to match "bunnymark", I
believe. I don't personally think this is very important.
2023-11-09 22:05:32 +00:00
..
bevymark.rs Unify FixedTime and Time while fixing several problems (#8964) 2023-10-16 01:57:55 +00:00
many_animated_sprites.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
many_buttons.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
many_cubes.rs Use EntityHashMap<Entity, T> for render world entity storage for better performance (#9903) 2023-09-27 08:28:28 +00:00
many_foxes.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
many_gizmos.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
many_glyphs.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
many_lights.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
many_sprites.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
README.md Add a stress test profile (#6901) 2022-12-20 15:59:41 +00:00
text_pipeline.rs Use a consistent scale factor and resolution in stress tests (#10474) 2023-11-09 22:05:32 +00:00
transform_hierarchy.rs Remove some old references to CoreSet (#9833) 2023-09-18 01:07:11 +00:00
warning_string.txt Added performance warning when running stress test examples in debug mode (#5029) 2022-07-13 19:13:46 +00:00

Stress tests

These examples are used to stress test Bevy's performance in various ways. These should be run with the "stress-test" profile to accurately represent performance in production, otherwise they will run in cargo's default "dev" profile which is very slow.

Example Command

cargo run --profile stress-test --example <EXAMPLE>