vkmmc needs a Vulkan driver with ray query (VK_KHR_ray_query). No macOS
driver provides it at the moment: MoltenVK, the Vulkan driver for Apple GPUs,
does not implement ray tracing. On macOS this build can parse and check
inputs and write the generated meshes (--dumpjson, --dumpmesh, --debugcurv),
but it cannot run simulations; use Linux or Windows with an NVIDIA RTX,
AMD RX 6000+ or Intel Arc GPU for that.

The binary loads the Vulkan loader (libvulkan.1.dylib) from the LunarG
Vulkan SDK or Homebrew (brew install vulkan-loader).
