The design is elegant and scalable. It allows Vulkan to evolve infinitely without deprecating core functions.
The primary benefit is the use of the pNext chain. By passing a pointer to a VkPhysicalDeviceFeatures2 structure, developers can link additional feature-specific structures (e.g., VkPhysicalDeviceShaderFloat16Int8Features ) to query support for specific hardware capabilities like 16-bit floats or 8-bit integers. vkgetphysicaldevicefeatures2
A common mistake is to assume that if a feature is present in the query, you can blindly enable it. Some features are mutually exclusive or depend on other features. The chained query reveals these relationships. The design is elegant and scalable