GLTF Loader panics when loading GLTF file

[TheNeikos]

Bevy version

0.4

Operating system & version

Latest Archlinux

What you did

[dependencies]
bevy = { version = "0.4", features = ["dynamic", "bevy_gltf"], default-features = false }

And then asset_server.load_folder(...).

What you expected to happen

It allows me to load gltf files without having a render backend (Since I only need the mesh in this case)

It simply loads the gltf file.

What actually happened

A panic with the following message: Resource does not exist alloc::boxed::Box<dyn bevy_render::renderer::render_resource_context::RenderResourceContext> (A dependency was activating the render feature of bevy but I was not adding a backend)

It panics with an error: "thread 'IO Task Pool (1)' panicked at 'Failed to find AssetLifecycle for label Some("Mesh0/Primitive0"), which has an asset type 8ecbac0f-f545-4473-ad43-e1f4243af51e. Are you sure that is a registered asset type?',"

Additional information

[mockersf]

It's possible to load a gltf mesh but you have to be picky about which part of bevy you are loading...
The error message you are getting means you haven't loaded the asset type used by mesh primitives in bevy, which can be done with:

.add_asset::<bevy::render::prelude::Mesh>()

If you only add this asset type, loading your mesh will probably still randomly fail on other part of the gltf file, which means it will kill threads from the asset server.

This seems like the minimal to reliably load my (very small) gltf file:

use bevy::{app::ScheduleRunnerSettings, prelude::*, utils::Duration};

fn main() {
    App::build()
        .add_resource(ScheduleRunnerSettings::run_loop(Duration::from_secs_f64(
            1.0,
        )))
        .add_plugins(MinimalPlugins)
        .add_plugin(bevy::asset::AssetPlugin::default())
        .add_asset::<bevy::pbr::prelude::StandardMaterial>()
        .add_asset::<bevy::render::prelude::Mesh>()
        .add_asset::<bevy::scene::Scene>()
        .add_plugin(bevy::gltf::GltfPlugin::default())
        .add_system(counter.system())
        .run();
}

fn counter(asset_server: Res<AssetServer>, meshes: Res<Assets<Mesh>>) {
    let handle: Handle<Mesh> = asset_server.load("cube.gltf#Mesh0/Primitive0");
    eprintln!("{:?}", meshes.get(handle));
}

[TheNeikos]

Thank you a lot! I'll try this out then and report back

[gak]

If anyone is looking for this in Bevy 0.8.1, I've had to do this to get it importing via the SceneBundle:

app.add_asset::<Mesh>();
app.add_asset::<StandardMaterial>();
app.add_asset::<Image>();
app.register_type::<Visibility>();
app.register_type::<ComputedVisibility>();
app.register_type::<Aabb>();

[hukasu]

Any updates for more recent versions?