flag to disable rayon multithreading for wasm

[maninkari]

Is there a way to disable rayon multithreading when using this library? My code keeps breaking because of rayon, not sure if it is because of trying to run multithreading in wasm. Thanks!

let w = 200;
let h = 200;

let img = ImageBuffer::from_fn(w, h, |x, y| {
    let i = ((x + y) % 256) as u8;
    if (x + y) % 3 == 0 {
        image::Rgba([255, 0, 0, 255])
    } else {
        image::Rgba([i, i, i, 255])
    }
});
let (cx, cy) = (120.0, 140.0);

let c_rotation = Projection::translate(cx, cy)
* Projection::rotate(PI / 6.0)
* Projection::translate(-cx, -cy);

let _warped = warp(
    &img,
    &c_rotation,
    Interpolation::Bilinear,
    Rgba([0 as u8; 4])
);

[theotherphil]

There’s a ‘rayon’ feature flag that should do this - see https://github.com/image-rs/imageproc/pull/419

[maninkari]

Thank you, I managed to get rid of the error by doing this in Cargo.toml imageproc = { version = "0.22", default-features = false }