Add minimum required Vulkan version check in the CMake module example

README.md

@@ -713,6 +713,13 @@ CMake provides the [FindVulkan module](https://cmake.org/cmake/help/latest/modul
 # find Vulkan SDK
 find_package( Vulkan REQUIRED )
 
+# Require Vulkan version ≥ 1.3.256 (earliest version when the Vulkan module was available)
+if( Vulkan_VERSION VERSION_LESS "1.3.256" )
+  message( FATAL_ERROR "Minimum required Vulkan version for C++ modules is 1.3.256. "
+           "Found ${Vulkan_VERSION}."
+  )
+endif()
+
 # set up Vulkan C++ module as a library
 add_library( VulkanHppModule )
 target_sources( VulkanHppModule PRIVATE