Some build findings.

Hi.

I've checkout the master branch, and followed the documentation as one would. My platform is Windows 10, MSYS2 MinGW64. I was planning to use OpenGl. I know, it's a very obscure configuration.

Ran the appropriate script. That generated a cmake file. Ran that with the default: cmake --build MinGW_Debug

That compiles and ultimately stopped at: C:\JoltPhysics\Jolt\Compute\DX12\ComputeSystemDX12.cpp:21:10: fatal error: dxcapi.h: No such file or directory

I had at this point installed nothing, since there is no mention anywhere that I needed to. No Volkan SDK either. In Jolt.cmake:

if (JPH_USE_VK)
	find_package(Vulkan)

Would set that flag to false. But for DirectX:

if (WIN32)
	# Add natvis file
	set(JOLT_PHYSICS_SRC_FILES ${JOLT_PHYSICS_SRC_FILES} ${JOLT_PHYSICS_ROOT}/Jolt.natvis)

	# DirectX support
	if (JPH_USE_DX12)

It just assumes that support for it exists based on that I'm on WIN32. Which it doesn't.

I bypassed that by overwriting the flag with: ./cmake_windows_mingw.sh Debug -DJPH_USE_DX12=OFF And now it builds fine.

In order to build the Viewer as well, installed the latest and greatest Vulkan SDK. Reran the build with the DirectX bypass, and now the Samples.exe and JoltViewer.exe get built.

Ran those from the MSYS64 console, and they both exit immediately with no console output and just a short white window flash. gdb traced it to

(gdb) backtrace
#0  __debugbreak () at C:/msys64/mingw64/include/_mingw.h:592
#1  JPH::sVulkanDebugCallback (inSeverity=VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT, inType=1, inCallbackData=0x5fb070, inUserData=0x0) at C:\code\JoltPhysics\Jolt\Compute\VK\ComputeSystemVKImpl.cpp:29
#2  0x00007ffb71e76888 in vulkan-1!vkResetEvent () from C:\WINDOWS\SYSTEM32\vulkan-1.dll

Looking at the actual message content that sadly does not make it to the console:

ERROR: [Loader Message] Code 0 : loader_add_layer_properties: Multiple 'layer' nodes are
deprecated starting in file version "1.0.1".  Please use 'layers' : [] array instead in
C:\ProgramData\GOG.com\Galaxy\redists\overlay\injected\galaxy_overlay_vklayer_x64.json.

Obviously this could be blamed on my increasingly obscure system configuration, but I can imagine other people have old GOG installations lurking around.

Fixed it by adding || (inType & VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT) == 0) to the assert in sVulkanDebugCallback.

And now it all runs fine.