Need to explain more on project configuration

[yhyu13]

I was having trouble building your project even when all external packages are installed by vckpg.

After some serarching, [here](vckpg installed cmake can't find) I found a solution

You would need to have your user to modify include(path to vcpkg/scripts/buildsystems/vcpkg.cmake) before find_package() in order for vckpkg installed libararies to be found.

Would you confirm this issue or explicitly mention it in your README file? Such that other people come after would have less confusion!

[yhyu13]

Vckpg's imgui does not contain any backend though, did you build imgui from vckpkg or from source?

[yhyu13]

My Vulkan SDK is the latest version 1.2.176.1 in May 2021. It seems to missing a bunch of ray traced functions in your projects such as AccelerationStructureCreateGeometryTypeInfoKHR and so on. Which version of Vulkan SDK were you working on?

[lukedan]

1. In vcpkg's readme:

   In order to use vcpkg with CMake outside of an IDE, you can use the toolchain file:

   cmake -B [build directory] -S . -DCMAKE_TOOLCHAIN_FILE=[path to vcpkg]/scripts/buildsystems/vcpkg.cmake
   cmake --build [build directory]

2. Output of vcpkg search imgui:

   imgui                1.82             Bloat-free Immediate Mode Graphical User interface for C++ with minimal depend...
   imgui[allegro5-binding]               Make available Allegro5 binding
   imgui[docking-experimental]           Build with docking support
   imgui[dx10-binding]                   Make available DirectX10 binding
   imgui[dx11-binding]                   Make available DirectX11 binding
   imgui[dx12-binding]                   Make available DirectX12 binding
   imgui[dx9-binding]                    Make available DirectX9 binding
   imgui[freetype]                       Build font atlases using FreeType instead of stb_truetype
   imgui[glfw-binding]                   Make available GLFW binding
   imgui[glut-binding]                   Make available Glut binding
   imgui[libigl-imgui]                   Install the libigl-imgui headers
   imgui[marmalade-binding]              Make available Marmalade binding
   imgui[metal-binding]                  Make available Metal binding
   imgui[opengl2-binding]                Make available OpenGL (legacy) binding
   imgui[opengl3-gl3w-binding]           Make available OpenGL3/ES/ES2 (modern) binding with gl3w
   imgui[opengl3-glad-binding]           Make available OpenGL3/ES/ES2 (modern) binding with glad
   imgui[opengl3-glbinding-binding]      Make available OpenGL3/ES/ES2 (modern) binding glbinding
   imgui[opengl3-glew-binding]           Make available OpenGL3/ES/ES2 (modern) binding with GLEW
   imgui[osx-binding]                    Make available OSX binding
   imgui[sdl2-binding]                   Make available SDL2 binding
   imgui[vulkan-binding]                 Make available Vulkan binding
   imgui[wchar32]                        Use WCHAR32 instead of WCHAR16
   imgui[win32-binding]                  Make available Win32 binding
   imgui-sfml           2.1-2            ImGui binding for use with SFML
   implot               0.9              Advanced 2D Plotting for Dear ImGui
   libigl[imgui]                         Build with imgui
   magnum-integration[imgui]             ImGuiIntegration library
   milerius-sfml-imgui  1.1-2            imgui dll for sfml usage
   
   If your library is not listed, please open an issue at and/or consider making a pull request:
     https://github.com/Microsoft/vcpkg/issues

   For this project you'll at least need imgui[vulkan-binding,glfw-binding].

3. What exactly is the error message? Is the function simply missing or is it an undefined symbol? If nothing works you can try uncommenting this line to disable all usages of the raytracing extension.

[yhyu13]

@lukedan I am able to install all vcpkg dependencies now. What is the exact version of your Vulkan API? I am using version 1.2.176.1. These ray tracing APIs do not seems to exists in the vulkan.hpp header.

[lukedan]

@yhyu13 The Vulkan SDK I have installed is version 1.2.154.1. It was still an experimental version of the API so it may have been changed.

[lukedan]

Latest commit updates to stable raytracing API.