terminate called after throwing an instance of 'std::length_error' about vulkan_ray_tracing_minimal_abstraction

[rajashekarkasturi]

There seems to be some issue with path for 'glslangValidator', I think I didn't set it properly.

vulkan_ray_tracing_minimal_abstraction/ray_pipeline/CMakeLists.txt

Line 27 in 24d1497

COMMAND ${Vulkan_GLSLANG_VALIDATOR_EXECUTABLE} --target-env vulkan1.2 -o

so I changed to glslc

COMMAND ${Vulkan_GLSLC_EXECUTABLE} --target-env=vulkan1.2 -o

It generated shaders successfully, Thanks!

[WilliamLewww]

Perfect! Glad to hear it's working now! 😄

[WilliamLewww]

Oh, I think this might be an issue where the application can't find the shader files but it does seem like you are running ./application inside the build directory.

Could you check to see if the shader files are present in your build directory (after compiling)?

This is what my build directory looks like after compilation:

build/
├── application
├── CMakeCache.txt
├── CMakeFiles
│   ├── 3.23.1
│   │   ├── CMakeCCompiler.cmake
│   │   ├── CMakeCXXCompiler.cmake
│   │   ├── CMakeDetermineCompilerABI_C.bin
│   │   ├── CMakeDetermineCompilerABI_CXX.bin
│   │   ├── CMakeSystem.cmake
│   │   ├── CompilerIdC
│   │   │   ├── a.out
│   │   │   ├── CMakeCCompilerId.c
│   │   │   └── tmp
│   │   └── CompilerIdCXX
│   │       ├── a.out
│   │       ├── CMakeCXXCompilerId.cpp
│   │       └── tmp
│   ├── 3.23.2
│   │   ├── CMakeCCompiler.cmake
│   │   ├── CMakeCXXCompiler.cmake
│   │   ├── CMakeDetermineCompilerABI_C.bin
│   │   ├── CMakeDetermineCompilerABI_CXX.bin
│   │   ├── CMakeSystem.cmake
│   │   ├── CompilerIdC
│   │   │   ├── a.out
│   │   │   ├── CMakeCCompilerId.c
│   │   │   └── tmp
│   │   └── CompilerIdCXX
│   │       ├── a.out
│   │       ├── CMakeCXXCompilerId.cpp
│   │       └── tmp
│   ├── application.dir
│   │   ├── build.make
│   │   ├── cmake_clean.cmake
│   │   ├── compiler_depend.internal
│   │   ├── compiler_depend.make
│   │   ├── compiler_depend.ts
│   │   ├── DependInfo.cmake
│   │   ├── depend.make
│   │   ├── flags.make
│   │   ├── link.txt
│   │   ├── progress.make
│   │   └── src
│   │       ├── main.cpp.o
│   │       └── main.cpp.o.d
│   ├── cmake.check_cache
│   ├── CMakeDirectoryInformation.cmake
│   ├── CMakeOutput.log
│   ├── CMakeRuleHashes.txt
│   ├── CMakeTmp
│   ├── copy_resources.dir
│   │   ├── build.make
│   │   ├── cmake_clean.cmake
│   │   ├── compiler_depend.make
│   │   ├── compiler_depend.ts
│   │   ├── DependInfo.cmake
│   │   └── progress.make
│   ├── Makefile2
│   ├── Makefile.cmake
│   ├── progress.marks
│   └── TargetDirectories.txt
├── cmake_install.cmake
├── Makefile
├── resources
│   ├── cube_scene.mtl
│   └── cube_scene.obj
└── shaders
    ├── shader.rchit.spv
    ├── shader.rgen.spv
    ├── shader.rmiss.spv
    └── shader_shadow.rmiss.spv

[rajashekarkasturi]

Hi William as you mentioned, ran the ./application in the build directory but could not find the shaders in the shaders/ folder.

[WilliamLewww]

It seems like there might be an issue when trying to compile the shaders. Here is what my output looks like when building the project:

[wlew@archlinux:/storage/projects/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/build]$ cmake ..
-- The C compiler identification is GNU 12.1.0
-- The CXX compiler identification is GNU 12.1.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found Vulkan: /storage/projects/vulkan_research_kit/tools/vulkan_development/install/lib/libvulkan.so (found version "1.3.204") 
-- Configuring done
-- Generating done
-- Build files have been written to: /storage/projects/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/build

[wlew@archlinux:/storage/projects/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/build]$ make
[  0%] Built target copy_resources
[ 16%] Generating shaders/shader_shadow.rmiss.spv
/storage/projects/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/src/shader_shadow.rmiss
[ 33%] Generating shaders/shader.rchit.spv
/storage/projects/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/src/shader.rchit
[ 50%] Generating shaders/shader.rgen.spv
/storage/projects/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/src/shader.rgen
[ 66%] Generating shaders/shader.rmiss.spv
/storage/projects/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/src/shader.rmiss
[ 83%] Building CXX object CMakeFiles/application.dir/src/main.cpp.o
[100%] Linking CXX executable application
[100%] Built target application

Since the shaders are missing from your build, I'm assuming that it doesn't show the Generating shaders/______.spv output when building.

Could you check to see if you have the glslangValidator program?

[rajashekarkasturi]

glslangValidator is present! in /usr/bin/glslangValidator

:~/Desktop/sample/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/build$ make
[  0%] Built target copy_resources
[ 16%] Generating shaders/shader_shadow.rmiss.spv
make[2]: target-env: Command not found
[ 33%] Generating shaders/shader.rchit.spv
make[2]: target-env: Command not found
[ 50%] Generating shaders/shader.rgen.spv
make[2]: target-env: Command not found
[ 66%] Generating shaders/shader.rmiss.spv
make[2]: target-env: Command not found
[ 83%] Building CXX object CMakeFiles/application.dir/src/main.cpp.o
[100%] Linking CXX executable application
[100%] Built target application

[WilliamLewww]

It seems like the cmake find_package(Vulkan REQUIRED) isn't properly setting the Vulkan_GLSLANG_VALIDATOR_EXECUTABLE variable properly.

vulkan_ray_tracing_minimal_abstraction/ray_pipeline/CMakeLists.txt

Lines 27 to 28 in 24d1497

	COMMAND ${Vulkan_GLSLANG_VALIDATOR_EXECUTABLE} --target-env vulkan1.2 -o
	shaders/${SHADER_NAME}.spv ${SHADER}

For now, a temporary solution is to change ${Vulkan_GLSLANG_VALIDATOR_EXECUTABLE} to glslangValidator so that the shaders can compile using the program.

I'm going to update the cmake_minimum_required version to 3.21 to ensure the Vulkan::glslangValidator target is imported.

https://cmake.org/cmake/help/latest/module/FindVulkan.html

[rajashekarkasturi]

Hi @WilliamLewww

When I'm running the ./application. It is showing a blank screen "Vulkan not Responding" as popup and force quitting the application.

This is the console output

Validation Information: [ UNASSIGNED-khronos-validation-createinstance-status-message ] Object 0: handle = 0x1034650, type = VK_OBJECT_TYPE_INSTANCE; | MessageID = 0xd7fa5f44 | Khronos Validation Layer Active:
    Settings File: None. Default location is /home/sample/vulkan_ray_tracing_minimal_abstraction/ray_pipeline/build\vk_layer_settings.txt.
    Current Enables: VK_VALIDATION_FEATURE_ENABLE_DEBUG_PRINTF_EXT, VK_VALIDATION_FEATURE_ENABLE_SYNCHRONIZATION_VALIDATION.
    Current Disables: None. 

NVIDIA GeForce RTX 2080
killed

FYI

> ~ vulkaninfo | grep KHR_ray
WARNING: [Loader Message] Code 0 : verify_meta_layer_component_layers: Meta-layer uses API version 1.2, but component layer 0 uses API version 1.3.  Skipping this layer.
ERROR: [Loader Message] Code 0 : libVkLayer_MESA_device_select.so: cannot open shared object file: No such file or directory
VK_KHR_ray_query                          : extension revision 1
VK_KHR_ray_tracing_pipeline               : extension revision 1

I'm in a doubt that, is it causing error because of Vulkan 1.3 version?

[WilliamLewww]

Hmm I don't think the 1.3 should be an issue.

I think it might be hanging on the main loop. If possible could you write a print statement right before the main loop here:

vulkan_ray_tracing_minimal_abstraction/ray_pipeline/src/main.cpp

Lines 2681 to 2683 in 9660901

	// =========================================================================
	// Main Loop

My guess is there might be a bug with the semaphores/fences when trying to acquire a new image.

[rajashekarkasturi]

Hi @WilliamLewww
Thanks for your patience

I added this print statement in main.cpp:

std::cout << "Debugging: Could not find Vulkan" << std::endl;

Output: Same as I got earlier: Vulkan not responding and I had to force quit the application

> vulkan_ray_tracing_minimal_abstraction/ray_pipeline/build$ ./application 
Validation Information: [ UNASSIGNED-khronos-validation-createinstance-status-message ] Object 0: handle = 0x5a1820, type = VK_OBJECT_TYPE_INSTANCE; | MessageID = 0xd7fa5f44 | Khronos Validation Layer Active:
    Settings File: None. Default location is /vulkan_ray_tracing_minimal_abstraction/ray_pipeline/build\vk_layer_settings.txt.
    Current Enables: VK_VALIDATION_FEATURE_ENABLE_DEBUG_PRINTF_EXT, VK_VALIDATION_FEATURE_ENABLE_SYNCHRONIZATION_VALIDATION.
    Current Disables: None. 

NVIDIA GeForce RTX 2080
Killed

[WilliamLewww]

Sorry for the late response, my notifications seem to not be working at the moment.

Hmmm it seems like it's hanging on a specific stage. To try to debug it, you could probably add a print statement at the start of each section.

In this case, it might be useful in general to have a printout for every section so I'll try to open a pull request with the print statements.