build-gn/layers-fuchsia.gni

# Copyright 2018 The Fuchsia Authors
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

# This scope makes it easy to incorporate the Vulkan validation layers into a
# package that is part of the Fuchsia system build.
#
# To use it, import this gni file and add the entries of the
# 'vulkan_validation_layers' scope to the package's 'loadable_modules',
# 'resources', and 'public_deps' parameters.
#
# Example BUILD.gn file:
#
# import("//src/graphics/lib/vulkan/layers.gni")
#
# package("my_funky_vulkan_using_program") {
#   loadable_modules = [
#     ...
#     ] + vulkan_validation_layers.loadable_modules
#
#   resources = [
#     ...
#     ] + vulkan_validation_layers.resources
#
#   public_deps = [
#     ...
#     ] + vulkan_validation_layers.public_deps
# }
#
# This will end up placing the validation libraries within the package's "lib/"
# directory, where they can be loaded like normal libraries, and place the layer
# configuration data in the package's "data/vulkan/explicit_layer.d" directory which
# is mapped to "/config/vulkan/explicit_layer.d"

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

vulkan_data_dir = "$root_out_dir/$vulkan_data_subdir"

vulkan_validation_layers = {
  loadable_modules = [
    {
      name = "VkLayer_khronos_validation.so"
    },
  ]

  resources = [
    {
      path = rebase_path("$vulkan_data_dir/VkLayer_khronos_validation.json")
      dest = "vulkan/explicit_layer.d/VkLayer_khronos_validation.json"
    },
  ]

  public_deps = [
    "//third_party/Vulkan-ValidationLayers:vulkan_gen_json_files",
    "//third_party/Vulkan-ValidationLayers:vulkan_validation_layers",
  ]
}