Tut 02: VK_LAYER_KHRONOS_validation not available. Win10, rust nightly-2020-12-18-gnu

[raum-dellamorte]

Without modification, running example 02 gives this output: (I edited out my println! statement)

Instance Available Layers:
        VK_LAYER_NV_optimus
        VK_LAYER_OBS_HOOK
        VK_LAYER_VALVE_steam_overlay
        VK_LAYER_VALVE_steam_fossilize
        VK_LAYER_EOS_Overlay
        VK_LAYER_EOS_Overlay
thread 'main' panicked at 'Validation layers requested, but not available!', src/tutorials/02_validation_layers.rs:83:13
stack backtrace:
   0:           0x6302fb - std::backtrace_rs::backtrace::dbghelp::trace::h81f68c85e8a404bc
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\..\..\backtrace\src\backtrace\dbghelp.rs:98:5
   1:           0x6302fb - std::backtrace_rs::backtrace::trace_unsynchronized::h38c8cbf83a2b340b
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\..\..\backtrace\src\backtrace\mod.rs:66:5
   2:           0x6302fb - std::sys_common::backtrace::_print_fmt::he83f99e5e7da91ec
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\sys_common\backtrace.rs:67:5
   3:           0x6302fb - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdca2d1f25a396476
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\sys_common\backtrace.rs:46:22
   4:           0x69bb6b - core::fmt::write::h15a44803aaa8cb9c
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\core\src\fmt\mod.rs:1078:17
   5:           0x621ea3 - std::io::Write::write_fmt::h30650b0792e7e471
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\io\mod.rs:1519:15
   6:           0x633f48 - std::sys_common::backtrace::_print::h8a896f01a2594c13
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\sys_common\backtrace.rs:49:5
   7:           0x633f48 - std::sys_common::backtrace::print::hdd949e22ad060cf7
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\sys_common\backtrace.rs:36:9
   8:           0x633f48 - std::panicking::default_hook::{{closure}}::h7c4d2996f576da8d
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\panicking.rs:208:50
   9:           0x633b5c - std::panicking::default_hook::h6bfae4e54c8522ba
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\panicking.rs:225:9
  10:           0x6347d9 - std::panicking::rust_panic_with_hook::h39f01e8db1be2ade
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\panicking.rs:591:17
  11:           0x40f014 - std::panicking::begin_panic::{{closure}}::h0866a0a3edf0c304
  12:           0x40ef2f - std::sys_common::backtrace::__rust_end_short_backtrace::h2debba070202f4d5
  13:           0x406a1d - std::panicking::begin_panic::h6f8f5821fbf06777
  14:           0x40eceb - _02::main::h8024fc558f3fed18
  15:           0x40ef46 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd7b7017a0a872516
  16:           0x40ef8c - std::rt::lang_start::{{closure}}::hcf719bb69b974c4c
  17:           0x634a5c - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h137dc4e3949337b2
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\library\core\src\ops/function.rs:259:13
  18:           0x634a5c - std::panicking::try::do_call::h0e5552fee324fdbb
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\panicking.rs:379:40
  19:           0x634a5c - std::panicking::try::h6d54d70d12e29c0a
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\panicking.rs:343:19
  20:           0x634a5c - std::panic::catch_unwind::h8e874b49d2127ff8
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\panic.rs:396:14
  21:           0x634a5c - std::rt::lang_start_internal::h79337b5f0625a1d5
                               at /rustc/eb4fc71dc9024f15a0c9cc44bcc10c861e9d585e\/library\std\src\rt.rs:51:25
  22:           0x40ee88 - main
  23:           0x4013b4 - __tmainCRTStartup
                               at E:\mingwbuild\mingw-w64-crt-git\src\crt-x86_64-w64-mingw32/E:/mingwbuild/mingw-w64-crt-git/src/mingw-w64/mingw-w64-crt/crt/crtexe.c:339:15
  24:           0x40150b - mainCRTStartup
                               at E:\mingwbuild\mingw-w64-crt-git\src\crt-x86_64-w64-mingw32/E:/mingwbuild/mingw-w64-crt-git/src/mingw-w64/mingw-w64-crt/crt/crtexe.c:223:9
  25:     0x7ffa0f617c24 - <unknown>
  26:     0x7ffa0f7ed4d1 - <unknown>

So I added a println! to figure out what it wanted that it didn't have. It wants to find VK_LAYER_KHRONOS_validation which is not among the available things.

Perhaps I should have installed the Vulkan SDK first? Though I thought it was only necessary for C or C++ and whatnot.

I'm struggling with google trying to find out why that's not an available layer but to no avail thus far. I would like to work directly with Vulkan as opposed to a "safe wrapper" because I find it harder to understand things when part of the job is being done for me. I need to break a system down to its components to understand it.

The available layers all seem to be programs I'm running and nothing to do with the system itself.

[unknownue]

Yes, you can run a program written in Vulkan without Vulkan SDK. However, in actual vulkan development, you probably need validation layer to help you debug program state, which is a optional component provided in Vulkan SDK.
Please install Vulkan SDK and see if this problem can have been fixed.

[raum-dellamorte]

I installed the Vulkan SDK and for good measure I ran the Vulkan Configurator and the missing layers became available.

I didn't follow the link in your readme to the environment configuration used with ash, so that's my mistake.

I now get the following output:

Instance Available Layers: 
        VK_LAYER_NV_optimus
        VK_LAYER_OBS_HOOK
        VK_LAYER_VALVE_steam_overlay
        VK_LAYER_VALVE_steam_fossilize
        VK_LAYER_EOS_Overlay
        VK_LAYER_EOS_Overlay
        VK_LAYER_LUNARG_override
        VK_LAYER_LUNARG_api_dump
        VK_LAYER_LUNARG_device_simulation
        VK_LAYER_LUNARG_gfxreconstruct
        VK_LAYER_KHRONOS_validation
        VK_LAYER_LUNARG_monitor
        VK_LAYER_LUNARG_screenshot