cmake_minimum_required(VERSION 3.7)
project(vulkanengine)

set(SOURCE_FILES main.cpp sdl_render.cpp vmath.cpp bitfont.cpp animation.cpp vulkan_render.cpp)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
# Find SDL2 and OpenGL
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
find_package(SDL2 REQUIRED COMPONENTS main)
find_package(SDL2_image REQUIRED)
find_package(Vulkan REQUIRED)



include_directories(${SDL2_INCLUDE_DIRS} ${SDL2main_INCLUDE_DIRS}  ${SDL2_IMAGE_INCLUDE_DIRS} ${CMAKE_BINARY_DIR})
add_executable(vulkanengine ${SOURCE_FILES})
target_link_libraries(vulkanengine ${SDL2_LIBS} ${SDL2_IMAGE_LIBRARIES})

target_compile_definitions(vulkanengine PRIVATE VK_USE_PLATFORM_WIN32_KHR)
target_link_libraries(vulkanengine Vulkan::Vulkan)


# Copy SDL2 DLLs to output folder on Windows
if(WIN32)
    foreach(DLL ${SDL2_DLLS})
        add_custom_command(TARGET vulkanengine POST_BUILD COMMAND
            ${CMAKE_COMMAND} -E copy_if_different ${DLL} $<TARGET_FILE_DIR:vulkanengine>)
    endforeach()
    foreach(IMGDLL ${SDL2_IMAGE_DLLS})
        add_custom_command(TARGET vulkanengine POST_BUILD COMMAND
            ${CMAKE_COMMAND} -E copy_if_different ${IMGDLL} $<TARGET_FILE_DIR:vulkanengine>)
    endforeach()
endif()

if (${CMAKE_HOST_SYSTEM_PROCESSOR} STREQUAL "AMD64")
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin/glslangValidator.exe")
else()
  set(GLSL_VALIDATOR "$ENV{VULKAN_SDK}/Bin32/glslangValidator.exe")
endif()

file(GLOB_RECURSE GLSL_SOURCE_FILES
    "${Project_SOURCE_DIR}/*.frag"
    "${Project_SOURCE_DIR}/*.vert"
    )
message(STATUS "TEST")

foreach(GLSL ${GLSL_SOURCE_FILES})
  message(STATUS "BUILDING SHADER")
  get_filename_component(FILE_NAME ${GLSL} NAME)
  set(SPIRV "${PROJECT_SOURCE_DIR}/../assets/shaders/${FILE_NAME}.spv")
  message(STATUS ${GLSL})
  add_custom_command(
    OUTPUT ${SPIRV}
    #COMMAND ${CMAKE_COMMAND} -E make_directory "${PROJECT_SOURCE_DIR}/assets/shaders/"
    COMMAND ${GLSL_VALIDATOR} -V ${GLSL} -o ${SPIRV}
    DEPENDS ${GLSL})
  list(APPEND SPIRV_BINARY_FILES ${SPIRV})
endforeach(GLSL)



add_custom_target(
    Shaders
    DEPENDS ${SPIRV_BINARY_FILES}
    )

add_dependencies(vulkanengine Shaders)

#add_custom_command(TARGET vulkanengine POST_BUILD
#    COMMAND ${CMAKE_COMMAND} -E make_directory "$<TARGET_FILE_DIR:vulkanengine>/shaders/"
#    COMMAND ${CMAKE_COMMAND} -E copy_directory
#        "${PROJECT_SOURCE_DIR}/assets/shaders"
#        "$<TARGET_FILE_DIR:vulkanengine>/shaders"
#        )