prism/platforms/sdl/CMakeLists.txt

include(../../cmake/AddPlatformExecutable.cmake)

if(ENABLE_MACOS)
    find_library(METAL Metal)

    set(EXTRA_LIBRARIES GFXMetal ${METAL})
    set(EXTRA_SRC ${CMAKE_CURRENT_SOURCE_DIR}/sdl_metal.mm)
endif()

if(ENABLE_VULKAN)
    set(EXTRA_SRC ${CMAKE_CURRENT_SOURCE_DIR}/sdl_vulkan.cpp)
endif()

if(TARGET SDL2::SDL2)
    set(EXTRA_LIBRARIES SDL2::SDL2)
endif()

if(TARGET SDL2::Main)
    set(EXTRA_LIBRARIES SDL2::Main)
endif()

if(TARGET SDL2::SDL2main)
    set(EXTRA_LIBRARIES SDL2::SDL2main)
endif()

add_platform(
        SRC
        ${CMAKE_CURRENT_SOURCE_DIR}/file.cpp
        ${EXTRA_SRC}
        MAIN_FILE
        main.cpp.in
        EXECUTABLE_PROPERTIES
        MACOSX_BUNDLE ON
        MACOSX_BUNDLE_INFO_PLIST "${CMAKE_CURRENT_SOURCE_DIR}/Info.plist.in"
        LINK_LIBRARIES
        Core
        GFXVulkan
        ${EXTRA_LIBRARIES}
)

function(add_platform_commands target)
    if(NOT SKIP_DATA)
        if(ENABLE_MACOS)
            add_custom_command(TARGET ${target} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/data $<TARGET_FILE_DIR:${target}>/../Resources/data)
        else()
            add_custom_command(TARGET ${target} POST_BUILD COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/data $<TARGET_FILE_DIR:${target}>/data)
        endif()
    endif()

    # we HAVE to create this dummy target to convince CMake to properly copy over shader files.
    # before you ask, we have used POST_BUILD before but that only runs if the TARGET specified is built.
    # when you change a shader source file on disk, BuildShaders is triggered but that doesn't retrigger your actual
    # app target to be rebuilt, so the shaders are never copied correctly. With this (dumb) system, we ensure they
    # always are. WHY CMAKE WHY
    set(DUMMY_NAME ${target}-CopyShaders)

    add_custom_target(${DUMMY_NAME} ALL DEPENDS ${CMAKE_BINARY_DIR}/${target}-dummy)

    if(ENABLE_MACOS)
        add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/${target}-dummy
                COMMAND ${CMAKE_COMMAND} -E make_directory $<TARGET_FILE_DIR:${target}>/../Resources/shaders
                COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_BINARY_DIR}/shaders $<TARGET_FILE_DIR:${target}>/../Resources/shaders
                )
    else()
        add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/${target}-dummy
                COMMAND ${CMAKE_COMMAND} -E make_directory $<TARGET_FILE_DIR:${target}>/shaders
                COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_BINARY_DIR}/shaders $<TARGET_FILE_DIR:${target}>/shaders
                )
    endif()


    add_dependencies(${target} ${DUMMY_NAME})
endfunction()