我通过以下方式合并WebGPU+Rust
（index.html）
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>GreenMatterAI graphics preview</title>
<style>
canvas {
background-color: black;
}
</style>
</head>
<body id="wasm-example">
<script type="module">
import init from "./pkg/gmai_cad.js";
init().then(() => {
console.log("WASM Loaded");
});
</script>
</body>
</html>（lib.rs）
#[cfg_attr(target_arch = "wasm32", wasm_bindgen(start))]
pub async fn run() {
cfg_if::cfg_if! {
if #[cfg(target_arch = "wasm32")] {
std::panic::set_hook(Box::new(console_error_panic_hook::hook));
console_log::init_with_level(log::Level::Warn).expect("Couldn't initialize logger");
} else {
env_logger::init();
}
}
let event_loop = EventLoop::new();
let window = WindowBuilder::new().build(&event_loop).unwrap();
#[cfg(target_arch = "wasm32")]
{
use winit::dpi::PhysicalSize;
window.set_inner_size(PhysicalSize::new(450, 400));
use winit::platform::web::WindowExtWebSys;
web_sys::window()
.and_then(|win| win.document())
.and_then(|doc| {
let dst = doc.get_element_by_id("wasm-example")?;
let canvas = web_sys::Element::from(window.canvas());
dst.append_child(&canvas).ok()?;
Some(())
})
.expect("Couldn't append canvas to document body.");
}
let mut state = State::new(window).await;
event_loop.run(move |event, _, control_flow| match event {
Event::RedrawRequested(window_id) if window_id == state.window().id() => {
state.update();
state.render()
}
Event::MainEventsCleared => {
state.window().request_redraw();
}
Event::WindowEvent {
ref event,
window_id,
} => { state.event(event) },
_ => {}
});
}这段代码的结构方式使我无法将任何数据从Javascript传递到渲染循环。我想有一些HTML输入，用户可以修改和影响交互式渲染。我唯一想到的是有一个全局可变变量，并公开一些JavaScript可以用来修改这些变量的Rust函数。当然，这是一个明显的Rust反模式。关于这一点的规范方法是什么？
1条答案
按热度按时间xzv2uavs1#
不要使用标记为
#[wasm_bindgen(start)]的函数，而是使用普通的#[wasm_bindgen]导出函数，该函数可以接受参数，并从JavaScript调用它。