Create softbuffer surface for window: PlatformError(Some("Visual 0xac does not use softbuffer's pixel format and is unsupported"), None)

[bjorn3]

The following code crashes on my machine despite at least the application example in this repo working.

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

[dependencies]
#iced = { version = "0.13.1", features = ["image", "tokio"] }
libcosmic = { git = "https://github.com/pop-os/libcosmic.git", version = "0.1.0", features = ["tokio", "winit"] }
tokio = "1.43.0"

use cosmic::app::{Core, Settings, Task};
use cosmic::iced::widget::column;
use cosmic::{Application, Element};

fn main() -> cosmic::iced::Result {
    cosmic::app::run::<App>(Settings::default(), ())
}

struct App {
    core: Core,
}

#[derive(Debug, Clone)]
enum Message {}

impl Application for App {
    type Executor = tokio::runtime::Runtime;

    type Flags = ();

    type Message = Message;

    const APP_ID: &str = "foo";

    fn core(&self) -> &Core {
        &self.core
    }

    fn core_mut(&mut self) -> &mut Core {
        &mut self.core
    }

    fn init(core: Core, _flags: Self::Flags) -> (Self, Task<Message>) {
        (App { core }, Task::none())
    }

    fn view(&self) -> Element<Self::Message> {
        column![].into()
    }
}

Backtrace

thread 'main' panicked at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/tiny_skia/src/window/compositor.rs:68:10:
Create softbuffer surface for window: PlatformError(Some("Visual 0xac does not use softbuffer's pixel format and is unsupported"), None)
stack backtrace:
0: rust_begin_unwind
at /home/bjorn/Projects/cg_clif2/build/stdlib/library/std/src/panicking.rs:695:5
1: core::panicking::panic_fmt
at /home/bjorn/Projects/cg_clif2/build/stdlib/library/core/src/panicking.rs:75:14
2: core::result::unwrap_failed
at /home/bjorn/Projects/cg_clif2/build/stdlib/library/core/src/result.rs:1704:5
3: core::result::Result<T,E>::expect
at /home/bjorn/Projects/cg_clif2/build/stdlib/library/core/src/result.rs:1061:23
4: <iced_tiny_skia::window::compositor::Compositor as iced_graphics::compositor::Compositor>::create_surface
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/tiny_skia/src/window/compositor.rs:64:22
5: iced_winit::program::window_manager::WindowManager<P,C>::insert
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/winit/src/program/window_manager.rs:47:23
6: iced_winit::program::run_instance::{{closure}}
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/winit/src/program.rs:998:30
7: iced_winit::program::run::Runner<Message,F,C>::process_event
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/winit/src/program.rs:453:28
8: iced_winit::program::run::Runner<Message,F,C>::process_event
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/winit/src/program.rs:563:33
9: <iced_winit::program::run::Runner<Message,F,C> as winit::application::ApplicationHandler>::window_event
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/winit/src/program.rs:324:13
10: <&mut A as winit::application::ApplicationHandler>::window_event
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/application.rs:359:9
11: <&mut A as winit::application::ApplicationHandler>::window_event
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/application.rs:359:9
12: winit::platform_impl::linux::x11::EventLoop::drain_events::{{closure}}
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/x11/mod.rs:586:29
13: winit::platform_impl::linux::x11::event_processor::EventProcessor::process_event
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/x11/event_processor.rs:122:13
14: winit::platform_impl::linux::x11::EventLoop::drain_events
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/x11/mod.rs:576:13
15: winit::platform_impl::linux::x11::EventLoop::single_iteration
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/x11/mod.rs:520:9
16: winit::platform_impl::linux::x11::EventLoop::pump_app_events
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/x11/mod.rs:420:13
17: winit::platform_impl::linux::x11::EventLoop::run_app_on_demand
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/x11/mod.rs:385:19
18: winit::platform_impl::linux::x11::EventLoop::run_app
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/x11/mod.rs:376:9
19: winit::platform_impl::linux::EventLoop::run_app
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/platform_impl/linux/mod.rs:427:56
20: winit::event_loop::EventLoop::run_app
at /home/bjorn/.cargo/git/checkouts/winit-d03127a0b2faf55d/1cc02bd/src/event_loop.rs:228:9
21: iced_winit::program::run
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/winit/src/program.rs:632:17
22: iced::program::Program::run_with
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/iced/src/program.rs:183:12
23: cosmic::app::multi_window::MultiWindow

::run_with
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/src/app/multi_window.rs:119:5
24: cosmic::app::run
at /home/bjorn/.cargo/git/checkouts/libcosmic-41009aea1d72760b/1914006/src/app/mod.rs:170:9
25: gh_gui::main
at ./src/main.rs:6:5
26: core::ops::function::FnOnce::call_once
at /home/bjorn/Projects/cg_clif2/build/stdlib/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with RUST_BACKTRACE=full for a verbose backtrace.
Aborted

</details>

[hepp3n]

I had similar issue before on X11. This might be related to this: rust-windowing/winit#3646 which should be fixed in latest softbuffer.

pop-os's fork of iced, uses older version of softbuffer: https://github.com/pop-os/softbuffer/blob/master/Cargo.toml#L3

I think updating this dependency should solve this issue. I was suggesting to do this before rebase but it's ended not updated. Not sure why, maybe there were some issues. @wash2 should look into it, since I mentioned him earlier this problem.