cmake_minimum_required (VERSION 2.8.11)
if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
    add_definitions(-DVK_USE_PLATFORM_WIN32_KHR -DVK_USE_PLATFORM_WIN32_KHX -DWIN32_LEAN_AND_MEAN)
    add_custom_target(mk_layer_config_dir ALL COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>)
    set_target_properties(mk_layer_config_dir PROPERTIES FOLDER ${VVL_TARGET_FOLDER})
    set(DisplayServer Win32)
elseif(CMAKE_SYSTEM_NAME STREQUAL "Android")
    add_definitions(-DVK_USE_PLATFORM_ANDROID_KHR -DVK_USE_PLATFORM_ANDROID_KHX)
elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
    if (BUILD_WSI_XCB_SUPPORT)
        add_definitions(-DVK_USE_PLATFORM_XCB_KHR -DVK_USE_PLATFORM_XCB_KHX)
    endif()

    if (BUILD_WSI_XLIB_SUPPORT)
       add_definitions(-DVK_USE_PLATFORM_XLIB_KHR -DVK_USE_PLATFORM_XLIB_KHX -DVK_USE_PLATFORM_XLIB_XRANDR_EXT)
    endif()

    if (BUILD_WSI_WAYLAND_SUPPORT)
       add_definitions(-DVK_USE_PLATFORM_WAYLAND_KHR -DVK_USE_PLATFORM_WAYLAND_KHX)
    endif()

    if (BUILD_WSI_MIR_SUPPORT)
        add_definitions(-DVK_USE_PLATFORM_MIR_KHR -DVK_USE_PLATFORM_MIR_KHX)
        include_directories(${MIR_INCLUDE_DIR})
    endif()
elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
    add_definitions(-DVK_USE_PLATFORM_MACOS_MVK)
    if(CMAKE_GENERATOR MATCHES "^Xcode.*")
        add_custom_target(mk_layer_config_dir ALL COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>)
    endif()
else()
    message(FATAL_ERROR "Unsupported Platform!")
endif()

set (PYTHON_CMD ${PYTHON_EXECUTABLE})
set(SCRIPTS_DIR "${PROJECT_SOURCE_DIR}/scripts")

# Define macro used for building vkxml generated files
macro(run_vk_xml_generate dependency output)
    add_custom_command(OUTPUT ${output}
    COMMAND ${PYTHON_CMD} ${SCRIPTS_DIR}/lvl_genvk.py -registry ${VULKAN_HEADERS_LOCATION}/registry/vk.xml ${output}
    DEPENDS ${VULKAN_HEADERS_LOCATION}/registry/vk.xml ${VULKAN_HEADERS_LOCATION}/registry/generator.py ${SCRIPTS_DIR}/${dependency} ${SCRIPTS_DIR}/lvl_genvk.py ${VULKAN_HEADERS_LOCATION}/registry/reg.py
    )
endmacro()

# Define macro used for generating header files containing commit IDs for external dependencies
macro(run_external_revision_generate symbol_name output)
    add_custom_command(OUTPUT ${output}
        COMMAND ${PYTHON_CMD} ${SCRIPTS_DIR}/external_revision_generator.py --from_uuid -s ${symbol_name} -o ${output}
        DEPENDS ${SCRIPTS_DIR}/external_revision_generator.py
        )
endmacro()

# Custom targets for generated validation layer helper file dependencies
add_custom_target(spirv_tools_revision_file DEPENDS
    spirv_tools_commit_id.h
    )
add_custom_target(generate_helper_files DEPENDS
    vk_enum_string_helper.h
    vk_safe_struct.h
    vk_safe_struct.cpp
    vk_object_types.h
    vk_layer_dispatch_table.h
    vk_dispatch_table_helper.h
    vk_extension_helper.h
    vk_typemap_helper.h
    )
set_target_properties(spirv_tools_revision_file PROPERTIES FOLDER ${VVL_TARGET_FOLDER})
set_target_properties(generate_helper_files PROPERTIES FOLDER ${VVL_TARGET_FOLDER})

# Rules to build generated helper files
run_vk_xml_generate(loader_extension_generator.py vk_layer_dispatch_table.h)
run_vk_xml_generate(dispatch_table_helper_generator.py vk_dispatch_table_helper.h)
run_vk_xml_generate(helper_file_generator.py vk_safe_struct.h)
run_vk_xml_generate(helper_file_generator.py vk_safe_struct.cpp)
run_vk_xml_generate(helper_file_generator.py vk_enum_string_helper.h)
run_vk_xml_generate(helper_file_generator.py vk_object_types.h)
run_vk_xml_generate(helper_file_generator.py vk_extension_helper.h)
run_vk_xml_generate(helper_file_generator.py vk_typemap_helper.h)
if(BUILD_LAYERS)
    run_external_revision_generate(SPIRV_TOOLS_COMMIT_ID spirv_tools_commit_id.h)
endif()

# Layer Utils Library
# For Windows, we use a static lib because the Windows loader has a fairly restrictive loader search
# path that can't be easily modified to point it to the same directory that contains the layers.
set(VKLAYER_UTILS_VLF_SOURCES
    vk_layer_config.cpp
    vk_layer_extension_utils.cpp
    vk_layer_utils.cpp
    vk_format_utils.cpp
    )
if (WIN32)
    add_library(VkLayer_utils STATIC ${VKLAYER_UTILS_VLF_SOURCES})
    target_compile_definitions(VkLayer_utils PUBLIC _CRT_SECURE_NO_WARNINGS)
else()
    add_library(VkLayer_utils SHARED ${VKLAYER_UTILS_VLF_SOURCES})
endif()
install(TARGETS VkLayer_utils DESTINATION ${CMAKE_INSTALL_LIBDIR})
add_dependencies(VkLayer_utils generate_helper_files)
target_include_directories(
    VkLayer_utils PUBLIC
    ${CMAKE_CURRENT_SOURCE_DIR}/loader
    ${VULKAN_HEADERS_LOCATION}/include
    ${VULKAN_HEADERS_LOCATION}/interfaces
    ${CMAKE_CURRENT_BINARY_DIR}
    ${PROJECT_BINARY_DIR}
    )

set(LAYER_JSON_FILES_WITH_DEPENDENCIES
    VkLayer_core_validation
    VkLayer_object_tracker
    VkLayer_unique_objects
    VkLayer_parameter_validation
    VkLayer_threading
    )

set(LAYER_JSON_FILES_NO_DEPENDENCIES
    VkLayer_standard_validation
    )

set(LAYER_JSON_FILES ${LAYER_JSON_FILES_WITH_DEPENDENCIES} ${LAYER_JSON_FILES_NO_DEPENDENCIES})

if (WIN32)
    if (CMAKE_GENERATOR MATCHES "^Visual Studio.*")
        foreach (config_file ${LAYER_JSON_FILES})
            FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/windows/${config_file}.json src_json)
            FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/${config_file}.json dst_json)
            add_custom_target(${config_file}-json ALL
                DEPENDS mk_layer_config_dir
                COMMAND copy ${src_json} ${dst_json}
                VERBATIM
                )
            set_target_properties(${config_file}-json PROPERTIES FOLDER ${VVL_TARGET_FOLDER})
            install(FILES ${CMAKE_CURRENT_BINARY_DIR}/$<CONFIG>/${config_file}.json DESTINATION ${CMAKE_INSTALL_LIBDIR})
        endforeach(config_file)
    else()
        foreach (config_file ${LAYER_JSON_FILES})
            FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/windows/${config_file}.json src_json)
            FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_BINARY_DIR}/${config_file}.json dst_json)
            add_custom_target(${config_file}-json ALL
                COMMAND copy ${src_json} ${dst_json}
                VERBATIM
                )
            install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${config_file}.json DESTINATION ${CMAKE_INSTALL_LIBDIR})
        endforeach(config_file)
    endif()
    if (NOT (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR))
        # Copy vk_validation_error_messages.h from source to build dir for scripts to pick up
        FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/vk_validation_error_messages.h src_val_msgs)
        FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_BINARY_DIR}/vk_validation_error_messages.h dst_val_msgs)
        add_custom_target(vk_validation_error_messages ALL
            COMMAND copy ${src_val_msgs} ${dst_val_msgs}
            VERBATIM
            )
        set_target_properties(vk_validation_error_messages PROPERTIES FOLDER ${VVL_TARGET_FOLDER})
    endif()
elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
    # extra setup for out-of-tree builds
    if (NOT (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR))
        foreach (config_file ${LAYER_JSON_FILES})
            add_custom_target(${config_file}-json ALL
                COMMAND ln -sf ${CMAKE_CURRENT_SOURCE_DIR}/linux/${config_file}.json
                VERBATIM
                )
        endforeach(config_file)
        # Add link to vk_validation_error_messages.h in build dir for scripts to pick up
        add_custom_target(vk_validation_error_messages ALL
            COMMAND ln -sf ${CMAKE_CURRENT_SOURCE_DIR}/vk_validation_error_messages.h
            VERBATIM
            )
    endif()
elseif(APPLE)
    # extra setup for out-of-tree builds
    if (NOT (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR))
        if (CMAKE_GENERATOR MATCHES "^Xcode.*")
            foreach (config_file ${LAYER_JSON_FILES})
                add_custom_target(${config_file}-json ALL
                    DEPENDS mk_layer_config_dir
                    COMMAND ln -sf ${CMAKE_CURRENT_SOURCE_DIR}/macos/${config_file}.json $<CONFIG>
                    VERBATIM
                    )
            endforeach(config_file)
        else()
            foreach (config_file ${LAYER_JSON_FILES})
                add_custom_target(${config_file}-json ALL
                    COMMAND ln -sf ${CMAKE_CURRENT_SOURCE_DIR}/macos/${config_file}.json
                    VERBATIM
                    )
            endforeach(config_file)
        endif()
        # Add link to vk_validation_error_messages.h in build dir for scripts to pick up
        add_custom_target(vk_validation_error_messages ALL
            COMMAND ln -sf ${CMAKE_CURRENT_SOURCE_DIR}/vk_validation_error_messages.h
            VERBATIM
            )
    endif()
endif()

# If a layer has a direct dependency on a project with the same name, use it.
if ((Win32) OR (NOT (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)))
    foreach (config_file ${LAYER_JSON_FILES_WITH_DEPENDENCIES})
        add_dependencies(${config_file}-json ${config_file})
    endforeach(config_file)
    # If a layer has no direct dependencies, give it one so it copies in the proper order
    foreach (config_file ${LAYER_JSON_FILES_NO_DEPENDENCIES})
        add_dependencies(${config_file}-json VkLayer_utils)
    endforeach(config_file)
endif()

# Add targets for JSON file install on Linux.
# Need to remove the "./" from the library path before installing to system directories.
if(UNIX)
    foreach (config_file ${LAYER_JSON_FILES})
        add_custom_target(${config_file}-staging-json ALL
            COMMAND mkdir -p ${CMAKE_CURRENT_BINARY_DIR}/staging-json
            COMMAND cp ${CMAKE_CURRENT_SOURCE_DIR}/linux/${config_file}.json ${CMAKE_CURRENT_BINARY_DIR}/staging-json
            COMMAND sed -i -e "/\"library_path\":/s$./libVkLayer$libVkLayer$" ${CMAKE_CURRENT_BINARY_DIR}/staging-json/${config_file}.json
            VERBATIM
            DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/linux/${config_file}.json
            )
        install(FILES ${CMAKE_CURRENT_BINARY_DIR}/staging-json/${config_file}.json DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/vulkan/explicit_layer.d)
    endforeach(config_file)
endif()

if (WIN32)
    macro(add_vk_layer target)
    FILE(TO_NATIVE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/VkLayer_${target}.def DEF_FILE)
    add_custom_target(copy-${target}-def-file ALL
        COMMAND ${CMAKE_COMMAND} -E copy_if_different ${DEF_FILE} VkLayer_${target}.def
        VERBATIM
    )
    set_target_properties(copy-${target}-def-file PROPERTIES FOLDER ${VVL_TARGET_FOLDER})
    add_library(VkLayer_${target} SHARED ${ARGN} VkLayer_${target}.def)
    add_dependencies(VkLayer_${target} generate_helper_files)
    target_link_Libraries(VkLayer_${target} VkLayer_utils)
    add_dependencies(VkLayer_${target} generate_helper_files VkLayer_utils)
    install(TARGETS VkLayer_${target} DESTINATION ${CMAKE_INSTALL_LIBDIR})
    endmacro()
elseif(APPLE)
    macro(add_vk_layer target)
    add_library(VkLayer_${target} SHARED ${ARGN})
    target_link_Libraries(VkLayer_${target} VkLayer_utils)
    add_dependencies(VkLayer_${target} generate_helper_files VkLayer_utils)
    set_target_properties(VkLayer_${target} PROPERTIES
        LINK_FLAGS "-Wl"
        INSTALL_RPATH "@loader_path/"
    )
    install(TARGETS VkLayer_${target} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
    endmacro()
else()
    macro(add_vk_layer target)
    add_library(VkLayer_${target} SHARED ${ARGN})
    target_link_Libraries(VkLayer_${target} VkLayer_utils)
    add_dependencies(VkLayer_${target} generate_helper_files VkLayer_utils)
    set_target_properties(VkLayer_${target} PROPERTIES LINK_FLAGS "-Wl,-Bsymbolic,--exclude-libs,ALL")
    install(TARGETS VkLayer_${target} DESTINATION ${CMAKE_INSTALL_LIBDIR})
    endmacro()
endif()

include_directories(
    ${CMAKE_CURRENT_SOURCE_DIR}
    ${VULKAN_HEADERS_LOCATION}/include
    ${VULKAN_HEADERS_LOCATION}/include/vulkan
    )

if (WIN32)
    # Applies to all configurations
    add_definitions(-D_CRT_SECURE_NO_WARNINGS)
    # Avoid: fatal error C1128: number of sections exceeded object file format limit: compile with /bigobj
    set_source_files_properties(core_validation.cpp threading.cpp
        PROPERTIES COMPILE_FLAGS "/bigobj"
        )
    # Turn off transitional "changed behavior" warning message for Visual Studio versions prior to 2015.
    # The changed behavior is that constructor initializers are now fixed to clear the struct members.
    add_compile_options("$<$<AND:$<CXX_COMPILER_ID:MSVC>,$<VERSION_LESS:$<CXX_COMPILER_VERSION>,19>>:/wd4351>")
else()
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wpointer-arith -Wno-unused-function -Wno-sign-compare")
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wpointer-arith -Wno-unused-function -Wno-sign-compare")
endif()

# Clang warns about unused const variables. Generated files may purposely contain unused consts, so silence this warning in Clang
if (CMAKE_C_COMPILER_ID MATCHES "Clang")
   set_source_files_properties(parameter_validation.cpp PROPERTIES
        COMPILE_FLAGS "-Wno-unused-const-variable")
endif()

run_vk_xml_generate(threading_generator.py thread_check.h)
run_vk_xml_generate(parameter_validation_generator.py parameter_validation.cpp)
run_vk_xml_generate(unique_objects_generator.py unique_objects_wrappers.h)
run_vk_xml_generate(dispatch_table_helper_generator.py vk_dispatch_table_helper.h)
run_vk_xml_generate(object_tracker_generator.py object_tracker.cpp)

add_vk_layer(core_validation core_validation.cpp vk_layer_table.cpp descriptor_sets.cpp buffer_validation.cpp shader_validation.cpp xxhash.c)
add_vk_layer(object_tracker object_tracker.cpp object_tracker_utils.cpp vk_layer_table.cpp)
add_vk_layer(threading threading.cpp thread_check.h vk_layer_table.cpp)
add_vk_layer(unique_objects unique_objects.cpp unique_objects_wrappers.h vk_layer_table.cpp)
add_vk_layer(parameter_validation parameter_validation.cpp parameter_validation_utils.cpp parameter_validation.h vk_layer_table.cpp vk_validation_error_messages.h)

# Core validation has additional dependencies
target_include_directories(VkLayer_core_validation PRIVATE ${GLSLANG_SPIRV_INCLUDE_DIR})
target_include_directories(VkLayer_core_validation PRIVATE ${SPIRV_TOOLS_INCLUDE_DIR})
target_link_libraries(VkLayer_core_validation ${SPIRV_TOOLS_LIBRARIES})
add_dependencies(VkLayer_core_validation spirv_tools_revision_file)