gfx-hal-tutorial

Reimplementing examples from Vulkan Tutorial with Rust and gfx-hal.

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This project is licensed under either of Apache License, Version 2.0 or MIT license, at your option.

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Triangle example crashes on gfx-hal head at logging level info/warn

This is weird -- I can run the example code at logging level debug, but if I try to run it at info/warn, I crash.

I've attached the stack trace below:

$ RUST_BACKTRACE=1 RUST_LOG=warn cargo run --bin client --features metal
    Finished dev [unoptimized + debuginfo] target(s) in 0.30s
     Running `target/debug/client`
[2019-02-17T17:19:38Z WARN  metal::device] Shader warnings: Compilation succeeded with:

program_source:8:17: warning: unused variable '_19'
constant float2 _19[3] = { float2(0.0, -0.5), float2(0.5), float2(-0.5, 0.5) };
                ^
program_source:9:17: warning: unused variable '_28'
constant float3 _28[3] = { float3(1.0, 0.0, 0.0), float3(0.0, 1.0, 0.0), float3(0.0, 0.0, 1.0) };
                ^

[2019-02-17T17:19:38Z WARN  gfx_backend_metal::window] Swapchain drawables are changed, unable to wait for 0
[2019-02-17T17:19:38Z WARN  gfx_backend_metal::window] Failed to get the drawable of frame 0
thread 'main' panicked at 'presentation failed!: ()', src/libcore/result.rs:1009:5
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at src/libstd/sys_common/backtrace.rs:59
             at src/libstd/panicking.rs:211
   3: std::panicking::default_hook
             at src/libstd/panicking.rs:227
   4: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
             at src/libstd/panicking.rs:491
   5: std::panicking::continue_panic_fmt
             at src/libstd/panicking.rs:398
   6: std::panicking::try::do_call
             at src/libstd/panicking.rs:325
   7: core::char::methods::<impl char>::escape_debug
             at src/libcore/panicking.rs:95
   8: <alloc::vec::SetLenOnDrop<'a> as core::ops::drop::Drop>::drop
             at /rustc/9fda7c2237db910e41d6a712e9a2139b352e558b/src/libcore/macros.rs:26
   9: <alloc::vec::SetLenOnDrop<'a> as core::ops::drop::Drop>::drop
             at /rustc/9fda7c2237db910e41d6a712e9a2139b352e558b/src/libcore/result.rs:835
  10: rust_tower_defense::graphics::HelloTriangleApplication::draw_frame
             at src/graphics.rs:691
  11: rust_tower_defense::graphics::HelloTriangleApplication::main_loop::{{closure}}
             at src/graphics.rs:745
  12: winit::window::MonitorId::get_dimensions
             at /Users/chrisczub/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.18.1/src/platform/macos/events_loop.rs:233
  13: winit::platform::platform::events_loop::Modifiers::new
             at /Users/chrisczub/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.18.1/src/platform/macos/events_loop.rs:149
  14: winit::platform::platform::events_loop::Shared::new
             at /Users/chrisczub/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.18.1/src/platform/macos/events_loop.rs:69
  15: winit::window::MonitorId::get_dimensions
             at /Users/chrisczub/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.18.1/src/platform/macos/events_loop.rs:243
  16: alloc::str::<impl alloc::borrow::ToOwned for str>::to_owned
             at /Users/chrisczub/.cargo/registry/src/github.com-1ecc6299db9ec823/winit-0.18.1/src/lib.rs:288
  17: rust_tower_defense::graphics::HelloTriangleApplication::main_loop
             at src/graphics.rs:732
  18: rust_tower_defense::graphics::HelloTriangleApplication::run
             at src/graphics.rs:765
  19: core::str::<impl str>::as_ptr
             at src/graphics.rs:26
  20: client::main
             at src/bin/rtd.rs:16
  21: std::rt::lang_start::{{closure}}
             at /rustc/9fda7c2237db910e41d6a712e9a2139b352e558b/src/libstd/rt.rs:74
  22: std::panicking::try::do_call
             at src/libstd/rt.rs:59
             at src/libstd/panicking.rs:310
  23: panic_unwind::dwarf::eh::read_encoded_pointer
             at src/libpanic_unwind/lib.rs:102
  24: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
             at src/libstd/panicking.rs:289
             at src/libstd/panic.rs:398
             at src/libstd/rt.rs:58
  25: std::rt::lang_start
             at /rustc/9fda7c2237db910e41d6a712e9a2139b352e558b/src/libstd/rt.rs:74
  26: client::main
[2019-02-17T17:19:38Z ERROR gfx_backend_metal::command] Command buffer not released properly!
[2019-02-17T17:19:38Z ERROR gfx_backend_metal::command] Command buffer not released properly!

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