# Copyright 2019 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//src/graphics/examples/vkproto/common/common.gni")
import("//src/lib/vulkan/build/config.gni")
import("//src/lib/vulkan/build/vulkan_targets.gni")
import("//src/lib/vulkan/vulkan.gni")

resource("override") {
  sources = [ "VkLayer_override.json" ]
  outputs = [ "data/vulkan/implicit_layer.d/VkLayer_override.json" ]
}

fuchsia_component("vkproto-cmp") {
  manifest = "meta/vkproto.cml"

  deps = [
    ":bin",
    ":override",
    ":shaders",
    "//src/lib/vulkan/swapchain:image_pipe_swapchain_fb_layer",
    "//src/lib/vulkan/validation_layers",
  ]
}

resource("shaders") {
  sources = [
    "common/shaders/frag.spv",
    "common/shaders/vert.spv",
  ]
  outputs = [ "data/shaders/{{source_file_part}}" ]
}

fuchsia_package("vkproto-pkg") {
  deps = [ ":vkproto-cmp" ]
}

config("vulkan_sdk_linux_config") {
  # Specify the include/lib dirs and linked libraries for use with the
  # downloaded LunarG Vulkan SDK.
  vulkan_sdk = "//prebuilt/third_party/vulkansdk/linux/x86_64"
  include_dirs = [ "$vulkan_sdk/include" ]
  lib_dirs = [ "$vulkan_sdk/lib" ]
  libs = [ "vulkan" ]
}

vulkan_executable("bin") {
  output_name = "vkproto"
  sources = [ "example/main.cc" ]

  include_dirs = [ "//src/graphics/examples/vkproto/common" ]

  defines = [ "VULKAN_HPP_NO_EXCEPTIONS" ]

  if (is_fuchsia) {
    include_dirs += [ "//src/graphics/examples/vkproto/fuchsia" ]

    deps = [
      # TODO(https://fxbug.dev/42180987): workaround for toolchain issues, see bug
      "//build/config/fuchsia:uses-outline-atomics-fxbug98632",
      "//src/lib/vulkan",
      "//src/lib/vulkan/swapchain",
    ]

    sources += [
      "fuchsia/fuchsia_surface.cc",
      "fuchsia/fuchsia_surface.h",
    ]
  } else {
    defines += [ "USE_GLFW=1" ]

    include_dirs += [ "//src/graphics/examples/vkproto/glfw" ]

    sources += [
      "glfw/glfw_surface.cc",
      "glfw/glfw_surface.h",
    ]

    deps = [
      ":spirv_copy",
      "//third_party/glfw",
    ]

    if (is_linux) {
      configs += [ ":vulkan_sdk_linux_config($host_toolchain)" ]
    } else if (is_mac) {
      include_dirs += [ "${vulkan_sdk}/include" ]

      lib_dirs = [ "${vulkan_sdk}/lib" ]

      libs = [ "vulkan" ]
    }
  }

  deps += [ "common:srcs" ]

  data = [
    "common/shaders/frag.spv",
    "common/shaders/vert.spv",
  ]
}

copy("spirv_copy") {
  sources = [
    "common/shaders/frag.spv",
    "common/shaders/vert.spv",
  ]

  outputs = [ "$root_out_dir/{{source_file_part}}" ]
}

group("vkproto-glfw") {
  if (is_host) {
    deps = [ ":bin($host_toolchain)" ]
  }
}

group("vkproto") {
  deps = [ ":vkproto-pkg" ]
}