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Use new web_sys Uint8ClampedArray bindings (#4184)

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Zhizhou Ma 2024-10-13 04:08:00 +08:00 committed by GitHub
parent bc85317a2c
commit 724b4477d6
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1 changed files with 2 additions and 11 deletions
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13
examples/raytrace-parallel/src/lib.rs
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@ -2,6 +2,7 @@ use futures_channel::oneshot;
use js_sys::{Promise, Uint8ClampedArray, WebAssembly};
use rayon::prelude::*;
use wasm_bindgen::prelude::*;
use web_sys::ImageData;
macro_rules! console_log {
($($t:tt)*) => (crate::log(&format_args!($($t)*).to_string()))
@ -117,16 +118,6 @@ pub struct RenderingScene {
height: u32,
}
// Inline the definition of `ImageData` here because `web_sys` uses
// `&Clamped<Vec<u8>>`, whereas we want to pass in a JS object here.
#[wasm_bindgen]
extern "C" {
pub type ImageData;
#[wasm_bindgen(constructor, catch)]
fn new(data: &Uint8ClampedArray, width: f64, height: f64) -> Result<ImageData, JsValue>;
}
#[wasm_bindgen]
impl RenderingScene {
/// Returns the JS promise object which resolves when the render is complete
@ -157,5 +148,5 @@ fn image_data(base: usize, len: usize, width: u32, height: u32) -> ImageData {
// could ensure that even on the Rust side of things it's not UB.
let mem = wasm_bindgen::memory().unchecked_into::<WebAssembly::Memory>();
let mem = Uint8ClampedArray::new(&mem.buffer()).slice(base as u32, (base + len) as u32);
ImageData::new(&mem, width as f64, height as f64).unwrap()
ImageData::new_with_js_u8_clamped_array_and_sh(&mem, width, height).unwrap()
}