Enhance root CMakeLists.txt with additional build instructions and comments for clarity

Author: euclid-skyline

CMakeLists.txt

@@ -3,6 +3,16 @@ cmake_minimum_required (VERSION 3.29)
 project (VulkanTutorialRoot)
 # This is to allow the CMakeLists.txt files in attachments/ to be accessed from root level
 # Use command: cmake -S . -B build to configure from root level
+# Then use command: cmake --build build to build from root level
+# This will generate the build files in the build/ directory
+# The build files will reference the source files in the attachments/ directory
+# No need to change or delete any lines in attachments/ CMakeLists.txt files
+# You can still build from attachments/ directory if needed
+# Just navigate to attachments/ and run cmake and build commands as usual
 add_subdirectory(attachments)
 
-# Any other subdirectories can be added here
+# Any other subdirectories can be added here
+# Need to be carefull using CMAKE_SOURCE_DIR is points to the root level CMakeLists.txt
+# Use CMAKE_CURRENT_SOURCE_DIR to point to the current directory instead
+# For Simple Vulkan Engine project please uncomment the following line
+# add_subdirectory(attachments/simple_engine)