Initial commit for vulkan tutorial

Following along the first 9 chapters of the Vulkan HelloTriangle
tutorial.

CMake/Findglm.cmake

@@ -0,0 +1,133 @@
+# Findglm.cmake
+#
+# Finds the GLM library
+#
+# This will define the following variables
+#
+#    glm_FOUND
+#    glm_INCLUDE_DIRS
+#
+# and the following imported targets
+#
+#    glm::glm
+#
+
+# Try to find the package using pkg-config first
+find_package(PkgConfig QUIET)
+if(PKG_CONFIG_FOUND)
+  pkg_check_modules(PC_glm QUIET glm)
+endif()
+
+# Find the include directory
+find_path(glm_INCLUDE_DIR
+  NAMES glm/glm.hpp
+  PATHS
+    ${PC_glm_INCLUDE_DIRS}
+    /usr/include
+    /usr/local/include
+    $ENV{VULKAN_SDK}/include
+    ${ANDROID_NDK}/sources/third_party
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../external
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../third_party
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../attachments/external
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../attachments/third_party
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../attachments/include
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../../external
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../../third_party
+    ${CMAKE_CURRENT_SOURCE_DIR}/../../../../../../../include
+  PATH_SUFFIXES glm
+)
+
+# If the include directory wasn't found, use FetchContent to download and build
+if(NOT glm_INCLUDE_DIR)
+  # If not found, use FetchContent to download and build
+  include(FetchContent)
+
+  message(STATUS "GLM not found, fetching from GitHub...")
+  FetchContent_Declare(
+    glm
+    GIT_REPOSITORY https://github.com/g-truc/glm.git
+    GIT_TAG 0.9.9.8  # Use a specific tag for stability
+  )
+
+  # Define a function to update the CMake minimum required version
+  function(update_glm_cmake_version)
+    # Get the source directory
+    FetchContent_GetProperties(glm SOURCE_DIR glm_SOURCE_DIR)
+
+    # Update the minimum required CMake version
+    file(READ "${glm_SOURCE_DIR}/CMakeLists.txt" GLM_CMAKE_CONTENT)
+    string(REPLACE "cmake_minimum_required(VERSION 3.2"
+                   "cmake_minimum_required(VERSION 3.5"
+                   GLM_CMAKE_CONTENT "${GLM_CMAKE_CONTENT}")
+    file(WRITE "${glm_SOURCE_DIR}/CMakeLists.txt" "${GLM_CMAKE_CONTENT}")
+  endfunction()
+
+  # Set policy to suppress the deprecation warning
+  if(POLICY CMP0169)
+    cmake_policy(SET CMP0169 OLD)
+  endif()
+
+  # First, declare and populate the content
+  FetchContent_GetProperties(glm)
+  if(NOT glm_POPULATED)
+    FetchContent_Populate(glm)
+    # Update the CMake version before making it available
+    update_glm_cmake_version()
+  endif()
+
+  # Now make it available (this will process the CMakeLists.txt)
+  FetchContent_MakeAvailable(glm)
+
+  # Get the include directory from the target
+  if(TARGET glm)
+    get_target_property(glm_INCLUDE_DIR glm INTERFACE_INCLUDE_DIRECTORIES)
+    if(NOT glm_INCLUDE_DIR)
+      # If we can't get the include directory from the target, use the source directory
+      set(glm_INCLUDE_DIR ${glm_SOURCE_DIR})
+    endif()
+  else()
+    # GLM might not create a target, so use the source directory
+    set(glm_INCLUDE_DIR ${glm_SOURCE_DIR})
+  endif()
+endif()
+
+# Set the variables
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(glm 
+  REQUIRED_VARS glm_INCLUDE_DIR
+)
+
+if(glm_FOUND)
+  set(glm_INCLUDE_DIRS ${glm_INCLUDE_DIR})
+
+  # Create an imported target
+  if(NOT TARGET glm::glm)
+    add_library(glm::glm INTERFACE IMPORTED)
+    set_target_properties(glm::glm PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${glm_INCLUDE_DIRS}"
+    )
+  endif()
+elseif(TARGET glm)
+  # If find_package_handle_standard_args failed but we have a glm target from FetchContent
+  # Create an alias for the glm target
+  if(NOT TARGET glm::glm)
+    add_library(glm::glm ALIAS glm)
+  endif()
+
+  # Set variables to indicate that glm was found
+  set(glm_FOUND TRUE)
+  set(GLM_FOUND TRUE)
+
+  # Set include directories
+  get_target_property(glm_INCLUDE_DIR glm INTERFACE_INCLUDE_DIRECTORIES)
+  if(glm_INCLUDE_DIR)
+    set(glm_INCLUDE_DIRS ${glm_INCLUDE_DIR})
+  else()
+    # If we can't get the include directory from the target, use the source directory
+    set(glm_INCLUDE_DIR ${glm_SOURCE_DIR})
+    set(glm_INCLUDE_DIRS ${glm_INCLUDE_DIR})
+  endif()
+endif()
+
+mark_as_advanced(glm_INCLUDE_DIR)