src/lib/vulkan/BUILD.gn

# 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("//build/sdk/sdk_atom.gni")
import("//src/lib/vulkan/image_pipe_swapchain.gni")
import("//src/lib/vulkan/layers.gni")

# Centralizing the GN points of entry into Vulkan ecosystem repositories here is helpful
# for grasping the full scope.  Note, there are also entry points in //sdk/BUILD.gn.

# Provides the Vulkan headers and entry points via the Vulkan loader.
group("vulkan") {
  public_configs = [ ":vulkan_hpp" ]

  public_deps = [
    ":headers",
    "//third_party/Vulkan-Loader:libvulkan",
  ]
}

# Provides only the Vulkan headers without the loader.
group("headers") {
  public_deps = [ "//third_party/Vulkan-Headers:vulkan_headers" ]
}

# Support code for building layers without bloat.
group("micro_layer_common") {
  public_deps = [ "//third_party/Vulkan-ValidationLayers:micro_layer_common" ]
}

# Tests for the Vulkan loader and validation layers.
group("loader_and_validation_tests") {
  testonly = true
  public_deps = [
    "//third_party/Vulkan-Loader:tests",
    "//third_party/Vulkan-ValidationLayers:tests",
  ]
}

# The vulkaninfo application.
group("vulkaninfo") {
  public_deps = [ "//third_party/Vulkan-Tools:vulkaninfo" ]
}

config("vulkan_hpp") {
  defines = [
    "VULKAN_HPP_ASSERT(expr)=do {} while(0)",
    "VULKAN_HPP_NO_EXCEPTIONS",
  ]
}

sdk_atom("vulkan_layers") {
  id = "sdk://pkg/vulkan_layers"

  category = "partner"

  files = []

  resources =
      vulkan_validation_layers.resources + image_pipe_swapchain.resources

  loadable_modules = vulkan_validation_layers.loadable_modules +
                     image_pipe_swapchain.loadable_modules
  non_sdk_deps =
      vulkan_validation_layers.public_deps + image_pipe_swapchain.public_deps

  sdk_resources = []
  foreach(resource, resources) {
    destination = "pkg/vulkan_layers/data/" + resource.dest
    files += [
      {
        source = resource.path
        dest = destination
      },
    ]
    sdk_resources += [ destination ]
  }

  sdk_binaries = []
  foreach(loadable_module, loadable_modules) {
    destination = "arch/$target_cpu/dist/" + loadable_module.name
    files += [
      {
        source = "$root_out_dir/" + loadable_module.name
        dest = destination
      },
    ]
    sdk_binaries += [ destination ]
  }

  meta = {
    dest = "pkg/vulkan_layers/meta.json"
    schema = "loadable_module"
    value = {
      type = "loadable_module"
      name = "vulkan_layers"
      root = "pkg/vulkan_layers"
      resources = []
      resources = sdk_resources
      binaries = {
      }
      if (target_cpu == "arm64") {
        binaries.arm64 = sdk_binaries
      } else if (target_cpu == "x64") {
        binaries.x64 = sdk_binaries
      } else {
        assert(false, "Unknown CPU type: %target_cpu")
      }
    }
  }
}