Displaying a JPEG image does not work with image crate version higher than 0.24

[leogomezz4t]

I was recently trying to display a JPEG image in a egui window using eframe but it would consistently say "Image format JPEG not supported". When trying to display a PNG, it worked perfectly however. To be clear, I had already included the jpeg features in my Cargo.toml.

I found the only thing that fixed it was changing the image crate version from 0.25.1 to 0.24.

I am using this test code pulled from the egui image example

use eframe::egui;

fn main() -> Result<(), eframe::Error> {
    let options = eframe::NativeOptions {
        viewport: egui::ViewportBuilder::default().with_inner_size([600.0, 800.0]),
        ..Default::default()
    };
    eframe::run_native(
        "Image Viewer",
        options,
        Box::new(|cc| {
            // This gives us image support:
            egui_extras::install_image_loaders(&cc.egui_ctx);
            Box::<MyApp>::default()
        }),
    )
}

#[derive(Default)]
struct MyApp {}

impl eframe::App for MyApp {
    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
        egui::CentralPanel::default().show(ctx, |ui| {
            egui::ScrollArea::both().show(ui, |ui| {
                ui.add(
                    egui::Image::new("https://picsum.photos/seed/1.759706314/1024").rounding(10.0),
                );
            });
        });
    }
}

This Cargo.toml doesn't work

[package]
name = "image_egui"
version = "0.1.0"
edition = "2021"

[dependencies]
eframe = { version = "0.27.2", features = [
    "default"
] }
egui = "0.27.2"
egui_extras = { version = "0.27.2", features = ["default", "all_loaders"] }
# Only difference is the image version is 0.25.1
image = { version = "0.25.1", default-features = false, features = [
    "jpeg",
    "png"
] }

This Cargo.toml does work

[package]
name = "images"
version = "0.1.0"
edition = "2021"

[dependencies]
eframe = { version = "0.27.2", features = [
  "default",
] }
egui = "0.27.2"
egui_extras = { version = "0.27.2", features = ["default", "all_loaders"] }
# Only difference is the image version is 0.24
image = { version = "0.24", default-features = false, features = [
  "jpeg",
  "png",
] }

[emilk]

You must use the same version of image as egui_extras uses.

See also:

• Update image crate to 0.25 #4160

[torokati44]

Just weaving the GH reference net tighter: This is the same fundamental issue as ruffle-rs/ruffle#15836, currently blocked on gltf-rs/gltf#409 (comment).