function(check_vulkan_version) cmake_parse_arguments(VULKAN_CHECK_VERSION "" "INCLUDE_DIR" "" ${ARGN}) message(STATUS "Ensuring the currently installed driver supports the Vulkan version requested by the Vulkan Header.") # Get the current Vulkan Header version (e.g. 1.2.189). # This snippet is based on: https://gitlab.kitware.com/cmake/cmake/-/blob/v3.23.1/Modules/FindVulkan.cmake#L140-156 if(VULKAN_CHECK_VERSION_INCLUDE_DIR) set(VULKAN_CORE_H ${VULKAN_CHECK_VERSION_INCLUDE_DIR}/vulkan/vulkan_core.h) if(EXISTS ${VULKAN_CORE_H}) file(STRINGS ${VULKAN_CORE_H} VULKAN_HEADER_VERSION_LINE REGEX "^#define VK_HEADER_VERSION ") string(REGEX MATCHALL "[0-9]+" VULKAN_HEADER_VERSION "${VULKAN_HEADER_VERSION_LINE}") file(STRINGS ${VULKAN_CORE_H} VULKAN_HEADER_VERSION_LINE2 REGEX "^#define VK_HEADER_VERSION_COMPLETE ") if(${VULKAN_HEADER_VERSION_LINE2}) string(REGEX MATCHALL "[0-9]+" VULKAN_HEADER_VERSION2 "${VULKAN_HEADER_VERSION_LINE2}") list(LENGTH VULKAN_HEADER_VERSION2 _len) # Versions >= 1.2.175 have an additional numbers in front of e.g. '0, 1, 2' instead of '1, 2' if(_len EQUAL 3) list(REMOVE_AT VULKAN_HEADER_VERSION2 0) endif() list(APPEND VULKAN_HEADER_VERSION2 ${VULKAN_HEADER_VERSION}) list(JOIN VULKAN_HEADER_VERSION2 "." VULKAN_HEADER_VERSION) else() file(STRINGS ${VULKAN_CORE_H} VULKAN_HEADER_API_VERSION_1_2 REGEX "^#define VK_API_VERSION_1_2.*") if(NOT ${VULKAN_HEADER_API_VERSION_1_2} STREQUAL "") set(VULKAN_HEADER_VERSION "1.2.${VULKAN_HEADER_VERSION}") else() file(STRINGS ${VULKAN_CORE_H} VULKAN_HEADER_API_VERSION_1_1 REGEX "^#define VK_API_VERSION_1_1.*") if(NOT ${VULKAN_HEADER_API_VERSION_1_1} STREQUAL "") set(VULKAN_HEADER_VERSION "1.1.${VULKAN_HEADER_VERSION}") else() message(FATAL_ERROR "'${VULKAN_CORE_H}' does not contain a supported Vulkan version. Probably because its < 1.2.0.") endif() endif() endif() else() message(FATAL_ERROR "'${VULKAN_CORE_H}' does not exist. Try calling 'find_package(Vulkan REQUIRED)' before you call this function or set 'Vulkan_INCLUDE_DIR' manually!") return() endif() else() message(FATAL_ERROR "Invalid Vulkan include directory given. Try calling 'find_package(Vulkan REQUIRED)' before you call this function or set 'Vulkan_INCLUDE_DIR' manually!") return() endif() message(STATUS "Found Vulkan Header version ${VULKAN_HEADER_VERSION}.") # Get Vulkan version supported by driver find_program(VULKAN_INFO_PATH NAMES vulkaninfo) if(${VULKAN_INFO_PATH}) message(FATAL_ERROR "vulkaninfo not found. The Vulkan SDK might not be installed properly.") return() endif() execute_process(COMMAND "vulkaninfo" OUTPUT_VARIABLE VULKAN_INFO_OUTPUT) if(${VULKAN_INFO_OUTPUT} MATCHES ".*Vulkan version ([0-9]+.[0-9]+.[0-9]+).*") set(VULKAN_DRIVER_VERSION ${CMAKE_MATCH_1}) message(STATUS "vulkaninfo reported supported version ${VULKAN_DRIVER_VERSION}") else() message(FATAL_ERROR "No valid version found in vulkaninfo. Does your GPU (driver) support Vulkan?") return() endif() # Compare driver and header version if(${VULKAN_DRIVER_VERSION} VERSION_LESS ${VULKAN_HEADER_VERSION}) # Version missmatch. Let us check if the minor version is the same. if(${VULKAN_DRIVER_VERSION} MATCHES "[0-9]+.([0-9]+).[0-9]+") set(VULKAN_DRIVER_MINOR_VERSION ${CMAKE_MATCH_1}) else() message(FATAL_ERROR "Invalid Vulkan driver version '${VULKAN_DRIVER_VERSION}' found. Expected version in the following format: '[0-9]+.[0-9]+.[0-9]+'") endif() if(${VULKAN_HEADER_VERSION} MATCHES "[0-9]+.([0-9]+).[0-9]+") set(VULKAN_HEADER_MINOR_VERSION ${CMAKE_MATCH_1}) else() message(FATAL_ERROR "Invalid Vulkan Header version '${VULKAN_HEADER_VERSION}' found. Expected version in the following format: '[0-9]+.[0-9]+.[0-9]+'") endif() if(${VULKAN_DRIVER_MINOR_VERSION} EQUAL ${VULKAN_HEADER_MINOR_VERSION}) message(WARNING "Your GPU driver does not support Vulkan > ${VULKAN_DRIVER_VERSION}, but you try to use Vulkan Header ${VULKAN_HEADER_VERSION}. At least your driver supports the same minor version (${VULKAN_DRIVER_MINOR_VERSION}), so this should be fine but keep it in mind if encounter some strange behavior.") else() message(FATAL_ERROR "Your GPU driver does not support Vulkan > ${VULKAN_DRIVER_VERSION}, but you try to use Vulkan Header ${VULKAN_HEADER_VERSION}.") endif() else() message(STATUS "Vulkan version check successful!") endif() endfunction()