vkcubeapp WSI DisplayKHR segfaults

[jwinarske]

Running vkcubeapp on Ubuntu 20 TTY, I get

/home/tcna/workspace-automation/app/Vulkan-Tools/cmake-build-debug-clang/cube/vkcubepp
Selected WSI platform: display
Signal: SIGSEGV (Segmentation fault)

Call stack

vkGetPhysicalDeviceDisplayPropertiesKHR 0x00007ffff7b42894
Demo::create_display_surface cube.cpp:3366
Demo::create_surface cube.cpp:1869
main cube.cpp:3830

gpu is NULL

Which indicates the gpu is not selected prior to calling create_display_surface

The problem with select_physical_device is that it expects surface to be initialized; circular dependency.

So in main vkcubeapp DisplayKHR WSI is broken. Other WSI platforms work fine.

Note that I did need to make a number of CMake mods in order to build it.

[water-chika]

#1060 should fix this issue.