Directional lights crash MacOS Monterey on WASM

[Azorlogh]

Bevy version

• Bevy 0.10.1
• Master at the time of writing (commit 9a3225d)

Relevant system information

• MacOS Monterey (does not happen on Ventura)
• WASM in Firefox, Chromium browsers, and Safari

Adapters: (happens with both)

AdapterInfo { name: "ANGLE (Intel Inc., Intel Iris Pro OpenGL Engine, OpenGL 4.1)", vendor: 32902, device: 0, device_type: IntegratedGpu, driver: "", driver_info: "", backend: Gl }
AdapterInfo { name: “Intel 945GM", vendor: 32902, device: 0, device_type: IntegratedGpu, driver: ““, driver_info: "", backend: Gl }

What you did

• Added a camera with an arbitrary orientation
• Added a directional light with an arbitrary orientation

Minimal Example:

use bevy::prelude::*;

fn main() {
   App::new()
      .add_plugins(DefaultPlugins)
      .add_systems(Startup, setup)
      .run();
}

fn setup(
   mut commands: Commands,
   mut meshes: ResMut<Assets<Mesh>>,
   mut materials: ResMut<Assets<StandardMaterial>>,
) {
   let sun_dir = Vec3::new(0.6, -0.5, 1.0).normalize();
   let quat = Quat::from_rotation_arc(Vec3::Z, sun_dir);
   commands.spawn(DirectionalLightBundle {
      directional_light: DirectionalLight {
            illuminance: 10000.0,
            ..default()
      },
      transform: Transform::from_rotation(quat),
      ..default()
   });

   // cube
   commands.spawn(PbrBundle {
      mesh: meshes.add(Mesh::from(shape::Cube { size: 2.0 })),
      material: materials.add(Color::rgb(0.8, 0.7, 0.6).into()),
      transform: Transform::default(),
      ..default()
   });

   // camera
   let mut camera = Camera3dBundle::default();
   camera.transform = Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y);
   commands.spawn(camera);
}

What went wrong

• The whole browser crashes

Additional information

• It is dependent on the orientation of both the camera and the directional light.
  I was not able to precisely determine the correlation, it does not seem to be something simple like "whether or not the camera looks in the same direction"
• The crash happens right after submitting the work to the GPU, so I think it's a driver crash

[mockersf]

Does it happens on all browsers?

Apple fixed something on the latest Safari update (16.4, with Ventura 13.3), so it's expected to fail on Monterey, but I didn't have issues at the time with other browsers

[Azorlogh]

Here's the details of everything I tested so far:

• A real MacOS Monterey machine (From a colleague)
  • Firefox, Chrome hang and crash after a while
  • Safari crashes the entire system
• Browserstack (What I used since I don't own a mac)
  • Firefox, Chrome hang & crash
  • Safari:
    • If using "WebGL via Metal"
      • It does not crash
      • But the cube doesn't appear
      • And a message shows in the console (1)
    • If not using "WebGL via Metal": It crashes

(1) Browserstack Safari with WebGL via Metal:

[mockersf]

Is it all on intel macs? Or do you also have access to macs with apple silicon?

[Azorlogh]

We tried on an Apple M1 Pro and it worked without issues.
On Browserstack's Ventura mac it works too, but I'm not sure what hardware it runs on.