Panic on startup in web build

[infmagic2047]

Bevy version

Main. This is caused by #4339 according to my test.

Operating system & version

Firefox 100.0.1 on Linux.

What you did

Run cargo run -p build-wasm-example -- shapes and open the generated page in browser.

What you expected to happen

Example running normally.

What actually happened

Nothing is displayed, and the following error is printed in console.

panicked at 'not yet implemented', <redacted>/wgpu-hal-0.12.5/src/gles/queue.rs:288:25

Stack:

init/imports.wbg.__wbg_new_693216e109162396@http://127.0.0.1:12345/target/wasm_example.js:408:21
console_error_panic_hook::hook::h175245a54082facd@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[6465]:0x7c9fc0
core::ops::function::Fn::call::h54cda502454c2ec2@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[27360]:0xa75da7
std::panicking::rust_panic_with_hook::hfa86900ad4160701@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[11051]:0x93bd3f
std::panicking::begin_panic_handler::{{closure}}::hb2a1d18d5f7c5c6f@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[13701]:0x9b6413
std::sys_common::backtrace::__rust_end_short_backtrace::hf88cb467b0094aae@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[21941]:0xa5ef7a
rust_begin_unwind@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[18863]:0xa3f67d
core::panicking::panic_fmt::h7cabf969fd4da0a3@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[18962]:0xa40f91
core::panicking::panic::h9910f31ba69e4858@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[18399]:0xa37805
wgpu_hal::gles::queue::<impl wgpu_hal::Queue<wgpu_hal::gles::Api> for wgpu_hal::gles::Queue>::submit::hc8ca2de3e785e49f@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[415]:0x11f8af
wgpu_core::device::queue::<impl wgpu_core::hub::Global<G>>::queue_submit::hd03fc7eb6e1af9df@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[369]:0x7b57e
<wgpu::backend::direct::Context as wgpu::Context>::queue_submit::h4891e44008ff5c35@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[6801]:0x7ee04a
bevy_render::renderer::render_system::had046c6ce34293ac@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[464]:0x17da29
<bevy_ecs::system::exclusive_system::ExclusiveSystemFn<F> as bevy_ecs::system::exclusive_system::ExclusiveSystem>::run::h0250626bda36337c@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[19357]:0xa46d02
<bevy_ecs::schedule::stage::SystemStage as bevy_ecs::schedule::stage::Stage>::run::hdedd82b5cf4bc12a@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[375]:0x9c531
<bevy_render::RenderPlugin as bevy_app::plugin::Plugin>::build::{{closure}}::h5a3ed159186dd5e8@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[5470]:0x754d8c
bevy_app::app::App::update::h356b26bf22fc790c@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[11520]:0x955b2e
winit::platform_impl::platform::event_loop::EventLoop<T>::run::{{closure}}::h3393e536ddd6b352@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[420]:0x12beea
winit::platform_impl::platform::event_loop::runner::Shared<T>::handle_event::h779af2e58f11a490@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[3197]:0x5e91f4
winit::platform_impl::platform::event_loop::runner::Shared<T>::run_until_cleared::hfa125a45ad665c35@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[2857]:0x5a0f3b
winit::platform_impl::platform::event_loop::runner::Shared<T>::set_listener::h375b7238afb5a37b@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[7650]:0x842693
winit::platform_impl::platform::event_loop::window_target::WindowTarget<T>::run::h8c699aa5f7c9e99f@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[12811]:0x9930e6
winit::platform_impl::platform::event_loop::EventLoop<T>::run::h8aeaf5835e762e0f@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[15593]:0x9f57a3
winit::event_loop::EventLoop<T>::run::h9da0ea4d0d996478@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[19946]:0xa4e8ad
bevy_winit::run::hbe2066f32bc15dff@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[19945]:0xa4e883
bevy_winit::winit_runner_with::h3de034c40bd253dc@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[955]:0x3060f4
bevy_winit::winit_runner::hd20c94ed2bdc8eb1@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[20176]:0xa51004
core::ops::function::Fn::call::h7819bdc31eb5819d@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[20173]:0xa50f8c
bevy_app::app::App::run::hb6284a79d50b85fb@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[12773]:0x991736
shapes::main::h14ef11c8fe7e6d3a@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[930]:0x2f7e92
std::sys_common::backtrace::__rust_begin_short_backtrace::hf18ad2a613451d60@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[27273]:0xa75ae5
std::rt::lang_start::{{closure}}::hebfd3768bf0d1659@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[19583]:0xa4a03a
std::rt::lang_start_internal::h4150b5b0c22fc5fd@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[11473]:0x953283
main@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[19584]:0xa4a07c
@http://127.0.0.1:12345/target/wasm_example_bg.wasm:wasm-function[25680]:0xa71128
init@http://127.0.0.1:12345/target/wasm_example.js:1668:10
async*@http://127.0.0.1:12345/:25:5

[mockersf]

I can reproduce. The panic is not always the same depending on the example

Example shapes panic at https://github.com/gfx-rs/wgpu/blob/3f4144a53b5ce80b9d89655f84534cfee74fc1ba/wgpu-hal/src/gles/queue.rs#L288

On example lighting, it's failing at https://github.com/gfx-rs/wgpu/blob/3f4144a53b5ce80b9d89655f84534cfee74fc1ba/wgpu-hal/src/gles/device.rs#L873

panicked at 'called `Option::unwrap()` on a `None` value', /.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-hal-0.12.5/src/gles/device.rs:873:44

Stack:

init/imports.wbg.__wbg_new_693216e109162396@http://localhost:4000/target/wasm_example.js:408:21
console_error_panic_hook::hook::h09769f7982973f6b@http://localhost:4000/target/wasm_example_bg.wasm:wasm-function[6509]:0x7d01a8
core::ops::function::Fn::call::h02988728b48377b4@http://localhost:4000/target/wasm_example_bg.wasm:wasm-function[27358]:0xa75bb8
std::panicking::rust_panic_with_hook::he2a025723e105e28@http://localhost:4000/target/wasm_example_bg.wasm:wasm-function[11033]:0x93c5ea
...

[mockersf]

@teoxoy @superdump any idea?