Can not run examples

[azerupi]

When I try to run the examples I get a panic:

thread '<main>' panicked at 'called `Result::unwrap()` on an `Err` value: OsError("glx::ChooseFBConfig failed")', ../src/libcore/result.rs:731
An unknown error occurred

Any idea what I am doing wrong?

I am on Arch Linux and I tried using both stable and nightly rust

[mitchmindtree]

Thanks for the issue!

Could you please provide the backtrace? i.e.

RUST_BACKTRACE=1 cargo run --example all_widgets

[azerupi]

Thank you for taking the time to look into it :)

Here is the backtrace, let me know if I can do anything else.

$ RUST_BACKTRACE=1 cargo run --example all_widgets
     Running `target/debug/examples/all_widgets`
thread '<main>' panicked at 'called `Result::unwrap()` on an `Err` value: OsError("glx::ChooseFBConfig failed")', ../src/libcore/result.rs:731
stack backtrace:
   1:     0x7f406e0b3b43 - sys::backtrace::write::hac6f7844a2c08518pqs
   2:     0x7f406e0b7089 - panicking::on_panic::he3a077dab5880a1969w
   3:     0x7f406e0ab9aa - rt::unwind::begin_unwind_inner::h07f84ceedf6e11d3KPw
   4:     0x7f406e0abfa7 - rt::unwind::begin_unwind_fmt::h7e195ef64919b9efQOw
   5:     0x7f406e0b6a86 - rust_begin_unwind
   6:     0x7f406e0e7174 - panicking::panic_fmt::h03749e86046e7c85E8B
   7:     0x7f406deb1252 - result::Result<T, E>::unwrap::h9744667872259961920
                        at ../src/libcore/macros.rs:28
   8:     0x7f406deac1bd - GlutinWindow::new::h769ffa3dbf277bcfKaa
                        at /home/mathieu/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/pistoncore-glutin_window-0.2.1/src/lib.rs:61
   9:     0x7f406df33ddc - GlutinWindow.From<WindowSettings>::from::h4e6d67af243caddd9fa
                        at /home/mathieu/.multirust/toolchains/nightly/cargo/registry/src/github.com-0a35038f75765ae4/pistoncore-glutin_window-0.2.1/src/lib.rs:126
  10:     0x7f406dda48bc - convert::T.Into<U>::into::h15332988262216744694
                        at ../src/libcore/convert.rs:152
  11:     0x7f406dda3f31 - main::ha051f9a5a1c68f74cfa
                        at examples/all_widgets.rs:135
  12:     0x7f406e0bbe78 - rust_try_inner
  13:     0x7f406e0bbe65 - rust_try
  14:     0x7f406e0b8b54 - rt::lang_start::h9b015c0b6de57f8334w
  15:     0x7f406ddca92b - main
  16:     0x7f406d30778f - __libc_start_main
  17:     0x7f406dd99d88 - _start
  18:                0x0 - <unknown>
An unknown error occurred

[mitchmindtree]

Hmmm, the stack trace seems to show the panic in the GlutinWindow constructor. @bvssvni any ideas? Or d'you know anyone on Arch Linux who might have an idea?

[bvssvni]

Perhaps it is here https://github.com/PistonDevelopers/glutin_window/blob/master/src/lib.rs#L61

[mitchmindtree]

The source for that glutin::WindowBuilder::build method is here.

Error should be very rare and only occur in case of permission denied, incompatible system, out of memory, etc.

[mitchmindtree]

@azerupi out of curiousity, do any of these glutin examples work for you?

[bvssvni]

Could it be the issue with loading OpenGL function pointers? PistonDevelopers/glutin_window#35

[azerupi]

@mitchmindtree I am not home at the moment, but I will try when I get back later today

[azerupi]

@mitchmindtree the glutin examples work like a charm

[mitchmindtree]

@azerupi were you ever able to get any of the examples working?

[azerupi]

Hah, it's been a long time.. ;) I have to admit that I don't really remember the problem anymore. After hitting this bug I put conrod and played with other things.

If you want I can try now, see if it works?

[mitchmindtree]

@azerupi aye it has been a while :)

If you get a chance, t'would be appreciated! No rush though of course 👍

[azerupi]

So I tried to run the all_widgets example. I don't get the original panic I reported here but I do get another one:

     Running `target/release/examples/all_widgets`
thread '<main>' panicked at 'Failed to get root window: XError { description: "GLXBadFBConfig", error_code: 181, request_code: 155, minor_code: 34 }', ../src/libcore/result.rs:760

I am running a fairly recently installed Arch linux with xfce + i3wm. Let me know if you need me to procure any extra information or if I should post this in a new issue and close this one.

[stianeklund]

I suspect this is the same problem I'm experiencing with Ubuntu running on Virtualbox.
I have a Ubuntu VM (with Guest utilities & 3D acceleration on). Please let me know if there is a more specific issue for this and I'll comment there instead, or if there are things to test and I'd be glad to assist.

Trying to compile & run all_widgets on Ubuntu 16:04 in VirtualBox fails.

rustc 1.10.0 (cfcb716cf 2016-07-03)
cargo 0.11.0-nightly (259324c 2016-05-20)
via rustup 0.4.0 (3171903 2016-07-22)

Backtrace:

         Running `target/debug/examples/all_widgets`
thread '<main>' panicked at 'called `Result::unwrap()` on an `Err` value: "Couldn\'t find any pixel format that matches the criterias."', ../src/libcore/result.rs:785
stack backtrace:
   1:     0x5634a1e9635f - std::sys::backtrace::tracing::imp::write::h3800f45f421043b8
   2:     0x5634a1e992fb - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::h0ef6c8db532f55dc
   3:     0x5634a1e98f83 - std::panicking::default_hook::hf3839060ccbb8764
   4:     0x5634a1e8d88d - std::panicking::rust_panic_with_hook::h5dd7da6bb3d06020
   5:     0x5634a1e99541 - std::panicking::begin_panic::h9bf160aee246b9f6
   6:     0x5634a1e8e81a - std::panicking::begin_panic_fmt::haf08a9a70a097ee1
   7:     0x5634a1e994de - rust_begin_unwind
   8:     0x5634a1ecebdf - core::panicking::panic_fmt::h93df64e7370b5253
   9:     0x5634a19ccee9 - core::result::unwrap_failed::hfa264942aa0c849a
                        at ../src/libcore/macros.rs:29
  10:     0x5634a19c321e - _<std..result..Result<T, E>>::unwrap::h162c33ab0d43eec1
                        at ../src/libcore/result.rs:723
  11:     0x5634a19c2aa5 - all_widgets::main::hca8753e5503ba0c4
                        at examples/all_widgets.rs:136
  12:     0x5634a1e98bc8 - std::panicking::try::call::hbbf4746cba890ca7
  13:     0x5634a1ea2ddb - __rust_try
  14:     0x5634a1ea2d7e - __rust_maybe_catch_panic
  15:     0x5634a1e9866e - std::rt::lang_start::hbcefdc316c2fbd45
  16:     0x5634a1ace779 - main
  17:     0x7fd14d54b82f - __libc_start_main
  18:     0x5634a19b8638 - _start
  19:                0x0 - <unknown>
error: Process didn't exit successfully: `target/debug/examples/all_widgets` (exit code: 101)

[mitchmindtree]

@stianeklund it looks like the error you're getting is slightly different to the ones azurepi has been reporting. I believe it might be either 1. a problem with the implementation of your platform within glutin or 2. a problem with the way that either PistonDevelopers/glutin_window or PistonDevelopers/piston_window wraps glutin. Would you mind checking whether or not the glutin examples work for you?

The following issues might be related:

• pixel format not found piston#1034
• pixel format not found compiling spinning square example piston#1097
• Enabling multisampling returns error when it shouldn't. rust-windowing/glutin#575
• "Pixel format not found" due to default sRGB-enabled context is still an issue piston_window#139

[stianeklund]

@mitchmindtree Not sure whether to comment in #757 or not. Glutin works, I'm able to compile and run the window example.

[mitchmindtree]

@stianeklund would be best to continue discussion of the bug at #757. Thanks for testing glutin examples btw 👍

[mitchmindtree]

Going to close this as I believe the examples should work now! Happy to re-open if there are still issues though.