[vulkan] Bundle vulkan validation layer so files (flutter/engine#13930)

Enable vulkan validation for Fuchsia in debug mode as well.

engine/src/flutter/shell/platform/fuchsia/dart_runner/BUILD.gn

@@ -6,9 +6,9 @@ assert(is_fuchsia)
 
 import("//build/fuchsia/sdk.gni")
 import("$flutter_root/common/fuchsia_config.gni")
-import("$flutter_root/tools/fuchsia/common_libs.gni")
 import("$flutter_root/tools/fuchsia/dart.gni")
 import("$flutter_root/tools/fuchsia/fuchsia_archive.gni")
+import("$flutter_root/tools/fuchsia/fuchsia_libs.gni")
 
 template("runner") {
   assert(defined(invoker.product), "The parameter 'product' must be defined")

engine/src/flutter/shell/platform/fuchsia/flutter/BUILD.gn

@@ -8,9 +8,10 @@ import("//build/fuchsia/sdk.gni")
 import("$flutter_root/common/config.gni")
 import("$flutter_root/shell/gpu/gpu.gni")
 import("$flutter_root/testing/testing.gni")
-import("$flutter_root/tools/fuchsia/common_libs.gni")
 import("$flutter_root/tools/fuchsia/dart.gni")
 import("$flutter_root/tools/fuchsia/fuchsia_archive.gni")
+import("$flutter_root/tools/fuchsia/fuchsia_libs.gni")
+import("$flutter_root/vulkan/config.gni")
 import("engine_flutter_runner.gni")
 
 shell_gpu_configuration("fuchsia_gpu_configuration") {
@@ -38,8 +39,14 @@ if (!using_fuchsia_sdk) {
 flutter_runner("jit") {
   output_name = "flutter_jit_runner"
   product = false
+
+  extra_defines = []
   if (flutter_runtime_mode == "profile") {
-    extra_defines = [ "FLUTTER_PROFILE" ]
+    extra_defines += [ "FLUTTER_PROFILE" ]
+  }
+
+  if (enable_vulkan_validation_layers) {
+    extra_defines += [ "VULKAN_VALIDATION_LAYERS_ENABLED" ]
   }
 
   extra_deps = [
@@ -51,8 +58,13 @@ flutter_runner("jit") {
 flutter_runner("jit_product") {
   output_name = "flutter_jit_product_runner"
   product = true
+
   extra_defines = [ "DART_PRODUCT" ]
 
+  if (enable_vulkan_validation_layers) {
+    extra_defines += [ "VULKAN_VALIDATION_LAYERS_ENABLED" ]
+  }
+
   extra_deps = [
     "//third_party/dart/runtime:libdart_jit_product",
     "//third_party/dart/runtime/platform:libdart_platform_jit_product",
@@ -62,9 +74,16 @@ flutter_runner("jit_product") {
 flutter_runner("aot") {
   output_name = "flutter_aot_runner"
   product = false
+
+  extra_defines = []
   if (flutter_runtime_mode == "profile") {
-    extra_defines = [ "FLUTTER_PROFILE" ]
+    extra_defines += [ "FLUTTER_PROFILE" ]
   }
+
+  if (enable_vulkan_validation_layers) {
+    extra_defines += [ "VULKAN_VALIDATION_LAYERS_ENABLED" ]
+  }
+
   extra_deps = [
     "//third_party/dart/runtime:libdart_precompiled_runtime",
     "//third_party/dart/runtime/platform:libdart_platform_precompiled_runtime",
@@ -74,7 +93,13 @@ flutter_runner("aot") {
 flutter_runner("aot_product") {
   output_name = "flutter_aot_product_runner"
   product = true
+
   extra_defines = [ "DART_PRODUCT" ]
+
+  if (enable_vulkan_validation_layers) {
+    extra_defines += [ "VULKAN_VALIDATION_LAYERS_ENABLED" ]
+  }
+
   extra_deps = [
     "//third_party/dart/runtime:libdart_precompiled_runtime_product",
     "//third_party/dart/runtime/platform:libdart_platform_precompiled_runtime_product",
@@ -157,7 +182,16 @@ template("jit_runner") {
       },
     ]
 
-    libraries = common_libs
+    _vulkan_icds = []
+    _libs = common_libs
+    if (enable_vulkan_validation_layers) {
+      _libs += vulkan_validation_libs
+      _vulkan_icds += vulkan_icds
+    }
+
+    resources += _vulkan_icds
+
+    libraries = _libs
 
     meta = [
       {
@@ -215,7 +249,16 @@ template("aot_runner") {
       ]
     }
 
-    libraries = common_libs
+    _vulkan_icds = []
+    _libs = common_libs
+    if (enable_vulkan_validation_layers) {
+      _libs += vulkan_validation_libs
+      _vulkan_icds += vulkan_icds
+    }
+
+    resources += _vulkan_icds
+
+    libraries = _libs
 
     meta = [
       {

engine/src/flutter/tools/fuchsia/fuchsia_archive.gni

@@ -2,8 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("$flutter_root/tools/fuchsia/common_libs.gni")
 import("$flutter_root/tools/fuchsia/fuchsia_debug_symbols.gni")
+import("$flutter_root/tools/fuchsia/fuchsia_libs.gni")
 
 # Creates a Fuchsia archive (.far) file using PM from the Fuchsia SDK.
 template("fuchsia_archive") {

engine/src/flutter/tools/fuchsia/fuchsia_libs.gni

@@ -69,3 +69,66 @@ common_libs = [
             "$clang_base/${clang_manifest_json.md5_beb70f40d525448b39ea87d9f5811e56}")
   },
 ]
+
+vulkan_dist = "$fuchsia_sdk_base/dist"
+
+vulkan_validation_libs = [
+  {
+    name = "VkLayer_core_validation.so"
+    path = rebase_path("$vulkan_dist")
+  },
+  {
+    name = "VkLayer_khronos_validation.so"
+    path = rebase_path("$vulkan_dist")
+  },
+  {
+    name = "VkLayer_object_lifetimes.so"
+    path = rebase_path("$vulkan_dist")
+  },
+  {
+    name = "VkLayer_stateless_validation.so"
+    path = rebase_path("$vulkan_dist")
+  },
+  {
+    name = "VkLayer_thread_safety.so"
+    path = rebase_path("$vulkan_dist")
+  },
+  {
+    name = "VkLayer_unique_objects.so"
+    path = rebase_path("$vulkan_dist")
+  },
+]
+
+vulkan_data_dir =
+    "//fuchsia/sdk/linux/pkg/vulkan_layers/data/vulkan/explicit_layer.d"
+
+vulkan_icds = [
+  {
+    path = rebase_path("$vulkan_data_dir/VkLayer_core_validation.json")
+    dest = "vulkan/explicit_layer.d/VkLayer_core_validation.json"
+  },
+  {
+    path = rebase_path("$vulkan_data_dir/VkLayer_object_lifetimes.json")
+    dest = "vulkan/explicit_layer.d/VkLayer_object_lifetimes.json"
+  },
+  {
+    path = rebase_path("$vulkan_data_dir/VkLayer_thread_safety.json")
+    dest = "vulkan/explicit_layer.d/VkLayer_thread_safety.json"
+  },
+  {
+    path = rebase_path("$vulkan_data_dir/VkLayer_stateless_validation.json")
+    dest = "vulkan/explicit_layer.d/VkLayer_stateless_validation.json"
+  },
+  {
+    path = rebase_path("$vulkan_data_dir/VkLayer_unique_objects.json")
+    dest = "vulkan/explicit_layer.d/VkLayer_unique_objects.json"
+  },
+  {
+    path = rebase_path("$vulkan_data_dir/VkLayer_khronos_validation.json")
+    dest = "vulkan/explicit_layer.d/VkLayer_khronos_validation.json"
+  },
+  {
+    path = rebase_path("$vulkan_data_dir/VkLayer_standard_validation.json")
+    dest = "vulkan/explicit_layer.d/VkLayer_standard_validation.json"
+  },
+]

engine/src/flutter/tools/gn

@@ -268,6 +268,12 @@ def to_gn_args(args):
     if args.ubsan:
       gn_args['is_ubsan'] = True
 
+    if args.enable_vulkan_validation_layers:
+      if args.target_os is not 'fuchsia':
+        print('Vulkan validation layers are currently only supported on Fuchsia targets.')
+        sys.exit(1)
+      gn_args['enable_vulkan_validation_layers'] = True
+
     return gn_args
 
 def parse_args(args):
@@ -316,6 +322,7 @@ def parse_args(args):
 
   parser.add_argument('--enable-fontconfig', action='store_true', default=False)
   parser.add_argument('--enable-skshaper', action='store_true', default=False)
+  parser.add_argument('--enable-vulkan-validation-layers', action='store_true', default=False)
 
   parser.add_argument('--embedder-for-target', dest='embedder_for_target', action='store_true', default=False)
 

engine/src/flutter/vulkan/config.gni

@@ -0,0 +1,12 @@
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+declare_args() {
+  # Whether to include vulkan validation layers, if available.
+  #
+  # Currently these are only supported on Fuchsia, where by default they are
+  # disabled, to enable them pass `--enable-vulkan-validation-layers` to your
+  # gn args.
+  enable_vulkan_validation_layers = false
+}

engine/src/flutter/vulkan/vulkan_utilities.cc

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "flutter/vulkan/vulkan_utilities.h"
+#include "flutter/fml/build_config.h"
 
 #include <algorithm>
 #include <unordered_set>
@@ -12,6 +13,8 @@ namespace vulkan {
 bool IsDebuggingEnabled() {
 #ifndef NDEBUG
   return true;
+#elif defined(VULKAN_VALIDATION_LAYERS_ENABLED)
+  return true;
 #else
   return false;
 #endif
@@ -27,7 +30,6 @@ bool ValidationErrorsFatal() {
 #if OS_FUCHSIA
   return false;
 #endif
-
   return true;
 }