BUILD.gn

# Copyright (C) 2018-2024 The ANGLE Project Authors.
# Copyright (C) 2019-2024 LunarG, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import("//build_overrides/lunarg_vulkantools.gni")

# This is not currently implemented for Fuchsia
assert(!is_fuchsia)

vulkan_undefine_configs = []
if (is_win) {
  vulkan_undefine_configs += [ "//build/config/win:unicode" ]
}

config("generated_layers_config") {
  if (is_clang) {
    cflags = [
      "-Wno-conversion",
      "-Wno-deprecated-copy",
      "-Wno-extra-semi",
      "-Wno-implicit-fallthrough",
      "-Wno-missing-field-initializers",
      "-Wno-newline-eof",
      "-Wno-sign-compare",
      "-Wno-unused-const-variable",
    ]
  }
}

config("vulkan_internal_config") {
  defines = [ "VK_ENABLE_BETA_EXTENSIONS" ]

  cflags = []
  if (is_clang || !is_win) {
    cflags += [ "-Wno-unused-function" ]
  }
  if (is_clang && is_mac) {
    cflags += [ "-Wno-unguarded-availability-new" ]
  }

  # Suppress warnings the vulkan code doesn't comply with.
  if (is_clang) {
    cflags += [ "-Wno-extra-semi" ]
  }
}

# The vulkantools layers
# ----------------------

config("vulkan_layer_config") {
  include_dirs = [
    "layersvt",
    "layersvt/generated",
  ]
  if (is_clang) {
    cflags = [ "-Wno-extra-semi" ]
  }
}

vt_sources = [
  "layersvt/generated/api_dump_dispatch.h",
  "layersvt/generated/api_dump_implementation.h",
  "layersvt/api_dump.h",
  "layersvt/api_dump_handwritten_dispatch.cpp",
  "layersvt/api_dump_handwritten_functions.h",
  "layersvt/vk_layer_table.cpp",
  "layersvt/vk_layer_table.h",
]

if (!is_android) {
  vulkan_data_dir = "$root_out_dir/$vulkan_data_subdir"
  action("vulkan_gen_json_files") {
    script = "scripts/gn/generate_vulkantools_layers_json.py"

    deps = [ "$vulkan_headers_dir:vulkan_headers" ]

    sources = [ "layersvt/json/VkLayer_api_dump.json.in" ]
    outputs = [ "$vulkan_data_dir/VkLayer_lunarg_api_dump.json" ]

    if (is_linux) {
      _platform = "Linux"
    } else if (is_win) {
      _platform = "Windows"
    } else if (is_mac) {
      _platform = "Darwin"
    } else {
      _platform = "Other"
    }

    args = [
             "--platform",
             _platform,
             rebase_path("layersvt/json/", root_build_dir),
             rebase_path(vulkan_data_dir, root_build_dir),
           ] + rebase_path(sources, root_build_dir)

    # The layer JSON files are part of the necessary data deps.
    data = outputs
  }
}

source_set("vulkan_layer_utils") {
  include_dirs = [
    "layers",
    "layers/external",
    "layers/vulkan",
  ]
  sources = [
    "$vulkan_headers_dir/include/vulkan/vk_layer.h",
    "$vulkan_headers_dir/include/vulkan/vulkan.h",
  ]
  public_configs = [
    ":vulkan_internal_config",
  ]
  public_deps = [
    "$vulkan_headers_dir:vulkan_headers",
    "$vulkan_utility_libraries_dir:vulkan_layer_settings",
  ]

  configs -= vulkan_undefine_configs
}

library_type = "shared_library"

target(library_type, "VkLayer_lunarg_api_dump") {
  defines = []
  ldflags = []
  configs -= [ "//build/config/compiler:chromium_code" ]
  configs += [ "//build/config/compiler:no_chromium_code" ]
  configs -= [ "//build/config/compiler:no_rtti" ]
  configs += [ "//build/config/compiler:rtti" ]
  configs -= vulkan_undefine_configs
  configs += [ ":generated_layers_config" ]
  public_configs = [ ":vulkan_layer_config" ]
  deps = [
    ":vulkan_layer_utils",
    "$vulkan_utility_libraries_dir:vulkan_layer_settings",
  ]
  sources = vt_sources
  if (is_win) {
    defines += [ "NOMINMAX" ]
    sources += [ "layers/VkLayer_lunarg_api_dump.def" ]
  }
  if (defined(ozone_platform_x11) && ozone_platform_x11) {
    defines += [ "VK_USE_PLATFORM_XLIB_KHR" ]
  }
  if (is_android) {
    libs = [
      "log",
      "nativewindow",
    ]
    configs -= [ "//build/config/android:hide_all_but_jni_onload" ]
  }
}

group("lunarg_vulkantools") {
  public_deps = []
  data_deps = []
  data_deps += [ ":VkLayer_lunarg_api_dump" ]
}