runtime failure

[drdozer]

I was able to compile on my laptop, but both example apps fail to run. I could compile but not successfully run all the wgpu project tests. I was able to get some of the wgpu showcase apps to run e.g. the n-body simulation of galaxies. I was able to successfully compile and run the tests of piet-gpu.

Here's a stacktrace.

     Running `target/debug/xilem counter`
MESA-INTEL: warning: Haswell Vulkan support is incomplete
size = 80.09600067138672W×24.0H
layout size = 80.09600067138672W×24.0H
render size: 1024.0W×768.0H
thread 'main' panicked at 'Error in Surface::configure: surface does not support the adapter's queue family', /home/nmrp3/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.14.2/src/backend/direct.rs:274:9
stack backtrace:
   0: rust_begin_unwind
             at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/std/src/panicking.rs:584:5
   1: core::panicking::panic_fmt
             at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/core/src/panicking.rs:142:14
   2: wgpu::backend::direct::Context::handle_error_fatal
             at /home/nmrp3/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.14.2/src/backend/direct.rs:274:9
   3: <wgpu::backend::direct::Context as wgpu::Context>::surface_configure
             at /home/nmrp3/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.14.2/src/backend/direct.rs:1017:13
   4: wgpu::Surface::configure
             at /home/nmrp3/.cargo/registry/src/github.com-1ecc6299db9ec823/wgpu-0.14.2/src/lib.rs:3715:9
   5: piet_wgsl::util::RenderContext::create_surface
             at /home/nmrp3/.cargo/git/checkouts/piet-gpu-adec1df56a2c5942/5718222/piet-wgsl/src/util.rs:70:9
   6: xilem::app_main::MainState<T,V>::render
             at ./src/app_main.rs:214:33
   7: <xilem::app_main::MainState<T,V> as glazier::window::WinHandler>::paint
             at ./src/app_main.rs:107:9
   8: glazier::backend::x11::window::Window::render::{{closure}}
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/backend/x11/window.rs:568:13
   9: glazier::backend::x11::window::Window::with_handler_and_dont_check_the_other_borrows
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/backend/x11/window.rs:505:31
  10: glazier::backend::x11::window::Window::render
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/backend/x11/window.rs:567:9
  11: glazier::backend::x11::window::Window::redraw_now
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/backend/x11/window.rs:673:9
  12: glazier::backend::x11::window::Window::run_idle
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/backend/x11/window.rs:932:29
  13: glazier::backend::x11::application::Application::run_inner
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/backend/x11/application.rs:700:25
  14: glazier::backend::x11::application::Application::run
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/backend/x11/application.rs:710:25
  15: glazier::application::Application::run
             at /home/nmrp3/.cargo/git/checkouts/glazier-3a172f69e2427c5a/6ef3bfd/src/application.rs:150:9
  16: xilem::app_main::AppLauncher<T,V>::run
             at ./src/app_main.rs:90:9
  17: xilem::main
             at ./src/main.rs:19:5
  18: core::ops::function::FnOnce::call_once
             at /rustc/897e37553bba8b42751c67658967889d11ecd120/library/core/src/ops/function.rs:248:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

and some vital stats:

$ cargo --version
cargo 1.65.0 (4bc8f24d3 2022-10-20)

$ uname -a
Linux persephone 5.4.0-131-generic #147-Ubuntu SMP Fri Oct 14 17:07:22 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

$ prime-select query
nvidia

$ sudo lshw -class display
[sudo] password for nmrp3: 
  *-display                 
       description: 3D controller
       product: GM108M [GeForce 840M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:35 memory:f6000000-f6ffffff memory:e0000000-efffffff memory:f0000000-f1ffffff ioport:e000(size=128) memory:f7000000-f707ffff
  *-display
       description: VGA compatible controller
       product: 4th Gen Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:34 memory:f7400000-f77fffff memory:d0000000-dfffffff ioport:f000(size=64) memory:c0000-dffff

[raphlinus]

This sounds like it might be https://github.com/linebender/piet-gpu/issues/224.

[drdozer]

This sounds like it might be https://github.com/linebender/piet-gpu/issues/224.

Yes, it looks like it could be exactly that. Dual card laptops is not that unusual. I'll try this on my desktop, which has just the one gpu.

[DJMcNab]

The upstream issue has been solved

I'm not sure what changes need to be made here to integrate the fix.

[DJMcNab]

I'm going to close this now. I believe we should be handling this case properly