Add initial BUILD.gn files for libdawn[|_native|_wire]

.gitignore

@@ -4,6 +4,16 @@
 x86
 x64
 
+# Directories added by the standalone GN build
+.gclient
+.gclient_entries
+build
+buildtools
+testing
+third_party/llvm-build
+tools
+out
+
 # Modified from https://www.gitignore.io/api/vim,macos,linux,emacs,cmake,windows,sublimetext,visualstudio,visualstudiocode
 
 ### CMake ###

.gn

@@ -0,0 +1,21 @@
+# Copyright 2018 The Dawn Authors
+#
+# 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
+#
+#     http://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.
+
+buildconfig = "//build/config/BUILDCONFIG.gn"
+
+default_args = {
+  use_custom_libcxx = false
+  clang_use_chrome_plugins = false
+  use_sysroot = true
+}

BUILD.gn

@@ -0,0 +1,648 @@
+# Copyright 2018 The Dawn Authors
+#
+# 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
+#
+#     http://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/dawn.gni")
+
+declare_args() {
+  # Enable Dawn's ASSERTs even in release builds
+  dawn_always_assert = false
+
+  # Enables the compilation of Dawn's D3D12 backend
+  dawn_enable_d3d12 = is_win
+
+  # Enables the compilation of Dawn's Metal backend
+  dawn_enable_metal = is_mac
+
+  # Enables the compilation of Dawn's Null backend
+  # (required for unittests, obviously non-conformant)
+  dawn_enable_null = true
+
+  # Enables the compilation of Dawn's OpenGL backend
+  # (best effort, non-conformant)
+  dawn_enable_opengl = is_linux
+
+  # Enables the compilation of Dawn's Vulkan backend
+  dawn_enable_vulkan = is_linux || is_win
+}
+
+###############################################################################
+# template to wrap the Dawn code generator
+###############################################################################
+
+template("dawn_generator") {
+  generator = "generator/main.py"
+  json = "dawn.json"
+  template_dir = "generator/templates"
+
+  target = invoker.target
+
+  common_args = [
+    rebase_path(json, root_build_dir),
+    "-t",
+    rebase_path(template_dir, root_build_dir),
+    "-o",
+    rebase_path(target_gen_dir, root_build_dir),
+    "-T",
+    target,
+  ]
+
+  # TODO(cwallez@chromium.org): Use depfile instead of this exec_script
+  script_inputs = exec_script(generator,
+                              common_args + [
+                                    "--print-dependencies",
+                                    "--gn",
+                                  ],
+                              "list lines",
+                              [ json ])
+
+  # Gather the outputs of the code generator for this target.
+  script_outputs = exec_script(generator,
+                               common_args + [
+                                     "--print-outputs",
+                                     "--gn",
+                                   ],
+                               "list lines",
+                               [ json ])
+
+  rebased_outputs = []
+  foreach(path, script_outputs) {
+    rebased_outputs +=
+        [ root_build_dir + "/" + rebase_path(path, root_build_dir) ]
+  }
+
+  # Make an action to execute the code generator
+  action(target_name + "_gen") {
+    script = generator
+    inputs = script_inputs
+    outputs = rebased_outputs
+    args = common_args
+  }
+
+  if (defined(invoker.target_type)) {
+    # Make a target with a custom target_type that will contain the outputs of
+    # the code generator in sources.
+    target(invoker.target_type, target_name) {
+      deps = [ ":" + target_name + "_gen" ]
+      sources = script_outputs
+
+      # Forward variables from the invoker. deps, configs and source are
+      # special cased because the invoker's must be added to the lists already
+      # present in this target
+      forward_variables_from(invoker,
+                             "*",
+                             [
+                               "deps",
+                               "target",
+                               "configs",
+                               "sources",
+                             ])
+
+      if (defined(invoker.deps)) {
+        deps += invoker.deps
+      }
+      if (defined(invoker.sources)) {
+        sources += invoker.sources
+      }
+      if (defined(invoker.configs)) {
+        configs += invoker.configs
+      }
+    }
+  }
+}
+
+###############################################################################
+# Dawn headers and libdawn.so
+###############################################################################
+
+config("libdawn_public") {
+  include_dirs = [
+    target_gen_dir,
+    "src/include",
+  ]
+}
+
+dawn_generator("dawn_headers") {
+  target = "dawn_headers"
+  target_type = "source_set"
+
+  public_configs = [ ":libdawn_public" ]
+}
+
+dawn_generator("libdawn") {
+  target = "libdawn"
+  target_type = "shared_library"
+
+  defines = [ "DAWN_IMPLEMENTATION" ]
+  sources = [
+    "src/include/dawn/EnumClassBitmasks.h",
+    "src/include/dawn/dawn_export.h",
+    "src/include/dawn/dawn_wsi.h",
+  ]
+
+  public_deps = [
+    ":dawn_headers",
+  ]
+}
+
+###############################################################################
+# Common dawn libraries and configs
+###############################################################################
+
+config("dawn_internal") {
+  include_dirs = [ "src" ]
+
+  defines = []
+  if (dawn_always_assert || is_debug) {
+    defines += [ "DAWN_ENABLE_ASSERTS" ]
+  }
+
+  if (dawn_enable_d3d12) {
+    defines += [ "DAWN_ENABLE_BACKEND_D3D12" ]
+  }
+  if (dawn_enable_metal) {
+    defines += [ "DAWN_ENABLE_BACKEND_METAL" ]
+  }
+  if (dawn_enable_null) {
+    defines += [ "DAWN_ENABLE_BACKEND_NULL" ]
+  }
+  if (dawn_enable_opengl) {
+    defines += [ "DAWN_ENABLE_BACKEND_OPENGL" ]
+  }
+  if (dawn_enable_vulkan) {
+    defines += [ "DAWN_ENABLE_BACKEND_VULKAN" ]
+  }
+
+  configs = [ ":libdawn_public" ]
+}
+
+static_library("dawn_common") {
+  sources = [
+    "src/common/Assert.cpp",
+    "src/common/Assert.h",
+    "src/common/BitSetIterator.h",
+    "src/common/Compiler.h",
+    "src/common/DynamicLib.cpp",
+    "src/common/DynamicLib.h",
+    "src/common/HashUtils.h",
+    "src/common/Math.cpp",
+    "src/common/Math.h",
+    "src/common/Platform.h",
+    "src/common/Result.h",
+    "src/common/Serial.h",
+    "src/common/SerialQueue.h",
+    "src/common/SwapChainUtils.h",
+    "src/common/vulkan_platform.h",
+    "src/common/windows_with_undefs.h",
+  ]
+
+  configs += [ ":dawn_internal" ]
+}
+
+###############################################################################
+# Third-party dependencies needed by libdawn_native
+###############################################################################
+
+config("glad_public") {
+  include_dirs = [ "third_party/glad/include" ]
+}
+
+static_library("glad") {
+  sources = [
+    "third_party/glad/include/KHR/khrplatform.h",
+    "third_party/glad/include/glad/glad.h",
+    "third_party/glad/src/glad.c",
+  ]
+
+  public_configs = [ ":glad_public" ]
+}
+
+config("spirv_cross_public") {
+  include_dirs = [ "third_party" ]
+  defines = [ "SPIRV_CROSS_EXCEPTIONS_TO_ASSERTIONS" ]
+}
+
+static_library("spirv_cross") {
+  public_configs = [ ":spirv_cross_public" ]
+
+  cflags_cc = [ "-Wno-implicit-fallthrough" ]
+
+  sources = [
+    dawn_spirv_cross_dir + "GLSL.std.450.h",
+    dawn_spirv_cross_dir + "spirv_common.hpp",
+    dawn_spirv_cross_dir + "spirv_cfg.cpp",
+    dawn_spirv_cross_dir + "spirv_cfg.hpp",
+    dawn_spirv_cross_dir + "spirv_cross.cpp",
+    dawn_spirv_cross_dir + "spirv_cross.hpp",
+    dawn_spirv_cross_dir + "spirv.hpp",
+  ]
+
+  need_glsl_cross = dawn_enable_opengl
+
+  if (dawn_enable_d3d12) {
+    sources += [
+      dawn_spirv_cross_dir + "spirv_hlsl.cpp",
+      dawn_spirv_cross_dir + "spirv_hlsl.hpp",
+    ]
+    need_glsl_cross = true
+  }
+
+  if (dawn_enable_metal) {
+    sources += [
+      dawn_spirv_cross_dir + "spirv_msl.cpp",
+      dawn_spirv_cross_dir + "spirv_msl.hpp",
+    ]
+    need_glsl_cross = true
+  }
+
+  if (need_glsl_cross) {
+    sources += [
+      dawn_spirv_cross_dir + "spirv_glsl.cpp",
+      dawn_spirv_cross_dir + "spirv_glsl.hpp",
+    ]
+  }
+}
+
+# An empty Vulkan target to add the include dirs and list the sources
+# for the header inclusion check.
+config("vulkan_headers_public") {
+  include_dirs = [ "third_party" ]
+}
+
+source_set("vulkan_headers") {
+  sources = [
+    "third_party/vulkan/vk_platform.h",
+    "third_party/vulkan/vulkan.h",
+  ]
+
+  public_configs = [ ":vulkan_headers_public" ]
+}
+
+###############################################################################
+# libdawn_native.so
+###############################################################################
+
+config("libdawn_native_internal") {
+  configs = [ ":dawn_internal" ]
+  defines = [ "DAWN_NATIVE_IMPLEMENTATION" ]
+
+  # Suppress warnings that Metal isn't in the deployment target of Chrome
+  if (is_mac) {
+    cflags_objcc = [ "-Wno-unguarded-availability" ]
+  }
+}
+
+dawn_generator("libdawn_native_utils") {
+  target = "dawn_native_utils"
+  target_type = "source_set"
+
+  configs = [ ":libdawn_native_internal" ]
+  deps = [
+    ":dawn_headers",
+  ]
+}
+
+# The meat of the compilation for libdawn_native so that we can cheaply have
+# shared_library / static_library / component versions of it.
+source_set("libdawn_native_sources") {
+  deps = [
+    ":dawn_common",
+    ":dawn_headers",
+    ":libdawn_native_utils",
+    ":spirv_cross",
+  ]
+
+  configs += [ ":libdawn_native_internal" ]
+  libs = []
+
+  sources = [
+    "src/dawn_native/BindGroup.cpp",
+    "src/dawn_native/BindGroup.h",
+    "src/dawn_native/BindGroupLayout.cpp",
+    "src/dawn_native/BindGroupLayout.h",
+    "src/dawn_native/BlendState.cpp",
+    "src/dawn_native/BlendState.h",
+    "src/dawn_native/Buffer.cpp",
+    "src/dawn_native/Buffer.h",
+    "src/dawn_native/Builder.cpp",
+    "src/dawn_native/Builder.h",
+    "src/dawn_native/CommandAllocator.cpp",
+    "src/dawn_native/CommandAllocator.h",
+    "src/dawn_native/CommandBuffer.cpp",
+    "src/dawn_native/CommandBuffer.h",
+    "src/dawn_native/CommandBufferStateTracker.cpp",
+    "src/dawn_native/CommandBufferStateTracker.h",
+    "src/dawn_native/Commands.cpp",
+    "src/dawn_native/Commands.h",
+    "src/dawn_native/ComputePipeline.cpp",
+    "src/dawn_native/ComputePipeline.h",
+    "src/dawn_native/DawnNative.cpp",
+    "src/dawn_native/DepthStencilState.cpp",
+    "src/dawn_native/DepthStencilState.h",
+    "src/dawn_native/Device.cpp",
+    "src/dawn_native/Device.h",
+    "src/dawn_native/Error.cpp",
+    "src/dawn_native/Error.h",
+    "src/dawn_native/ErrorData.cpp",
+    "src/dawn_native/ErrorData.h",
+    "src/dawn_native/Forward.h",
+    "src/dawn_native/InputState.cpp",
+    "src/dawn_native/InputState.h",
+    "src/dawn_native/PassResourceUsage.h",
+    "src/dawn_native/PerStage.cpp",
+    "src/dawn_native/PerStage.h",
+    "src/dawn_native/Pipeline.cpp",
+    "src/dawn_native/Pipeline.h",
+    "src/dawn_native/PipelineLayout.cpp",
+    "src/dawn_native/PipelineLayout.h",
+    "src/dawn_native/Queue.cpp",
+    "src/dawn_native/Queue.h",
+    "src/dawn_native/RefCounted.cpp",
+    "src/dawn_native/RefCounted.h",
+    "src/dawn_native/RenderPassDescriptor.cpp",
+    "src/dawn_native/RenderPassDescriptor.h",
+    "src/dawn_native/RenderPipeline.cpp",
+    "src/dawn_native/RenderPipeline.h",
+    "src/dawn_native/Sampler.cpp",
+    "src/dawn_native/Sampler.h",
+    "src/dawn_native/ShaderModule.cpp",
+    "src/dawn_native/ShaderModule.h",
+    "src/dawn_native/SwapChain.cpp",
+    "src/dawn_native/SwapChain.h",
+    "src/dawn_native/Texture.cpp",
+    "src/dawn_native/Texture.h",
+    "src/dawn_native/ToBackend.h",
+    "src/dawn_native/dawn_platform.h",
+    "src/include/dawn_native/DawnNative.h",
+    "src/include/dawn_native/dawn_native_export.h",
+
+    # Include all backend's public headers so that dependencies can include
+    # them even when the backends are disabled.
+    "src/include/dawn_native/D3D12Backend.h",
+    "src/include/dawn_native/MetalBackend.h",
+    "src/include/dawn_native/NullBackend.h",
+    "src/include/dawn_native/OpenGLBackend.h",
+    "src/include/dawn_native/VulkanBackend.h",
+  ]
+
+  if (dawn_enable_d3d12) {
+    libs += [
+      "d3d12.lib",
+      "dxgi.lib",
+      "d3dcompiler.lib",
+    ]
+    sources += [
+      "src/dawn_native/d3d12/BindGroupD3D12.cpp",
+      "src/dawn_native/d3d12/BindGroupD3D12.h",
+      "src/dawn_native/d3d12/BindGroupLayoutD3D12.cpp",
+      "src/dawn_native/d3d12/BindGroupLayoutD3D12.h",
+      "src/dawn_native/d3d12/BlendStateD3D12.cpp",
+      "src/dawn_native/d3d12/BlendStateD3D12.h",
+      "src/dawn_native/d3d12/BufferD3D12.cpp",
+      "src/dawn_native/d3d12/BufferD3D12.h",
+      "src/dawn_native/d3d12/CommandAllocatorManager.cpp",
+      "src/dawn_native/d3d12/CommandAllocatorManager.h",
+      "src/dawn_native/d3d12/CommandBufferD3D12.cpp",
+      "src/dawn_native/d3d12/CommandBufferD3D12.h",
+      "src/dawn_native/d3d12/ComputePipelineD3D12.cpp",
+      "src/dawn_native/d3d12/ComputePipelineD3D12.h",
+      "src/dawn_native/d3d12/DepthStencilStateD3D12.cpp",
+      "src/dawn_native/d3d12/DepthStencilStateD3D12.h",
+      "src/dawn_native/d3d12/DescriptorHeapAllocator.cpp",
+      "src/dawn_native/d3d12/DescriptorHeapAllocator.h",
+      "src/dawn_native/d3d12/DeviceD3D12.cpp",
+      "src/dawn_native/d3d12/DeviceD3D12.h",
+      "src/dawn_native/d3d12/Forward.h",
+      "src/dawn_native/d3d12/InputStateD3D12.cpp",
+      "src/dawn_native/d3d12/InputStateD3D12.h",
+      "src/dawn_native/d3d12/NativeSwapChainImplD3D12.cpp",
+      "src/dawn_native/d3d12/NativeSwapChainImplD3D12.h",
+      "src/dawn_native/d3d12/PipelineLayoutD3D12.cpp",
+      "src/dawn_native/d3d12/PipelineLayoutD3D12.h",
+      "src/dawn_native/d3d12/QueueD3D12.cpp",
+      "src/dawn_native/d3d12/QueueD3D12.h",
+      "src/dawn_native/d3d12/RenderPassDescriptorD3D12.cpp",
+      "src/dawn_native/d3d12/RenderPassDescriptorD3D12.h",
+      "src/dawn_native/d3d12/RenderPipelineD3D12.cpp",
+      "src/dawn_native/d3d12/RenderPipelineD3D12.h",
+      "src/dawn_native/d3d12/ResourceAllocator.cpp",
+      "src/dawn_native/d3d12/ResourceAllocator.h",
+      "src/dawn_native/d3d12/ResourceUploader.cpp",
+      "src/dawn_native/d3d12/ResourceUploader.h",
+      "src/dawn_native/d3d12/SamplerD3D12.cpp",
+      "src/dawn_native/d3d12/SamplerD3D12.h",
+      "src/dawn_native/d3d12/ShaderModuleD3D12.cpp",
+      "src/dawn_native/d3d12/ShaderModuleD3D12.h",
+      "src/dawn_native/d3d12/SwapChainD3D12.cpp",
+      "src/dawn_native/d3d12/SwapChainD3D12.h",
+      "src/dawn_native/d3d12/TextureCopySplitter.cpp",
+      "src/dawn_native/d3d12/TextureCopySplitter.h",
+      "src/dawn_native/d3d12/TextureD3D12.cpp",
+      "src/dawn_native/d3d12/TextureD3D12.h",
+      "src/dawn_native/d3d12/d3d12_platform.h",
+    ]
+  }
+
+  if (dawn_enable_metal) {
+    libs += [
+      "Metal.framework",
+      "Cocoa.framework",
+    ]
+    sources += [
+      "src/dawn_native/metal/BlendStateMTL.h",
+      "src/dawn_native/metal/BlendStateMTL.mm",
+      "src/dawn_native/metal/BufferMTL.h",
+      "src/dawn_native/metal/BufferMTL.mm",
+      "src/dawn_native/metal/CommandBufferMTL.h",
+      "src/dawn_native/metal/CommandBufferMTL.mm",
+      "src/dawn_native/metal/ComputePipelineMTL.h",
+      "src/dawn_native/metal/ComputePipelineMTL.mm",
+      "src/dawn_native/metal/DepthStencilStateMTL.h",
+      "src/dawn_native/metal/DepthStencilStateMTL.mm",
+      "src/dawn_native/metal/DeviceMTL.h",
+      "src/dawn_native/metal/DeviceMTL.mm",
+      "src/dawn_native/metal/Forward.h",
+      "src/dawn_native/metal/InputStateMTL.h",
+      "src/dawn_native/metal/InputStateMTL.mm",
+      "src/dawn_native/metal/PipelineLayoutMTL.h",
+      "src/dawn_native/metal/PipelineLayoutMTL.mm",
+      "src/dawn_native/metal/QueueMTL.h",
+      "src/dawn_native/metal/QueueMTL.mm",
+      "src/dawn_native/metal/RenderPipelineMTL.h",
+      "src/dawn_native/metal/RenderPipelineMTL.mm",
+      "src/dawn_native/metal/ResourceUploader.h",
+      "src/dawn_native/metal/ResourceUploader.mm",
+      "src/dawn_native/metal/SamplerMTL.h",
+      "src/dawn_native/metal/SamplerMTL.mm",
+      "src/dawn_native/metal/ShaderModuleMTL.h",
+      "src/dawn_native/metal/ShaderModuleMTL.mm",
+      "src/dawn_native/metal/SwapChainMTL.h",
+      "src/dawn_native/metal/SwapChainMTL.mm",
+      "src/dawn_native/metal/TextureMTL.h",
+      "src/dawn_native/metal/TextureMTL.mm",
+    ]
+  }
+
+  if (dawn_enable_null) {
+    sources += [
+      "src/dawn_native/null/NullBackend.cpp",
+      "src/dawn_native/null/NullBackend.h",
+    ]
+  }
+
+  if (dawn_enable_opengl) {
+    deps += [ ":glad" ]
+    sources += [
+      "src/dawn_native/opengl/BlendStateGL.cpp",
+      "src/dawn_native/opengl/BlendStateGL.h",
+      "src/dawn_native/opengl/BufferGL.cpp",
+      "src/dawn_native/opengl/BufferGL.h",
+      "src/dawn_native/opengl/CommandBufferGL.cpp",
+      "src/dawn_native/opengl/CommandBufferGL.h",
+      "src/dawn_native/opengl/ComputePipelineGL.cpp",
+      "src/dawn_native/opengl/ComputePipelineGL.h",
+      "src/dawn_native/opengl/DepthStencilStateGL.cpp",
+      "src/dawn_native/opengl/DepthStencilStateGL.h",
+      "src/dawn_native/opengl/DeviceGL.cpp",
+      "src/dawn_native/opengl/DeviceGL.h",
+      "src/dawn_native/opengl/Forward.h",
+      "src/dawn_native/opengl/InputStateGL.cpp",
+      "src/dawn_native/opengl/InputStateGL.h",
+      "src/dawn_native/opengl/PersistentPipelineStateGL.cpp",
+      "src/dawn_native/opengl/PersistentPipelineStateGL.h",
+      "src/dawn_native/opengl/PipelineGL.cpp",
+      "src/dawn_native/opengl/PipelineGL.h",
+      "src/dawn_native/opengl/PipelineLayoutGL.cpp",
+      "src/dawn_native/opengl/PipelineLayoutGL.h",
+      "src/dawn_native/opengl/QueueGL.cpp",
+      "src/dawn_native/opengl/QueueGL.h",
+      "src/dawn_native/opengl/RenderPipelineGL.cpp",
+      "src/dawn_native/opengl/RenderPipelineGL.h",
+      "src/dawn_native/opengl/SamplerGL.cpp",
+      "src/dawn_native/opengl/SamplerGL.h",
+      "src/dawn_native/opengl/ShaderModuleGL.cpp",
+      "src/dawn_native/opengl/ShaderModuleGL.h",
+      "src/dawn_native/opengl/SwapChainGL.cpp",
+      "src/dawn_native/opengl/SwapChainGL.h",
+      "src/dawn_native/opengl/TextureGL.cpp",
+      "src/dawn_native/opengl/TextureGL.h",
+    ]
+  }
+
+  if (dawn_enable_vulkan) {
+    deps += [ ":vulkan_headers" ]
+    sources += [
+      "src/dawn_native/vulkan/BindGroupLayoutVk.cpp",
+      "src/dawn_native/vulkan/BindGroupLayoutVk.h",
+      "src/dawn_native/vulkan/BindGroupVk.cpp",
+      "src/dawn_native/vulkan/BindGroupVk.h",
+      "src/dawn_native/vulkan/BlendStateVk.cpp",
+      "src/dawn_native/vulkan/BlendStateVk.h",
+      "src/dawn_native/vulkan/BufferUploader.cpp",
+      "src/dawn_native/vulkan/BufferUploader.h",
+      "src/dawn_native/vulkan/BufferVk.cpp",
+      "src/dawn_native/vulkan/BufferVk.h",
+      "src/dawn_native/vulkan/CommandBufferVk.cpp",
+      "src/dawn_native/vulkan/CommandBufferVk.h",
+      "src/dawn_native/vulkan/ComputePipelineVk.cpp",
+      "src/dawn_native/vulkan/ComputePipelineVk.h",
+      "src/dawn_native/vulkan/DepthStencilStateVk.cpp",
+      "src/dawn_native/vulkan/DepthStencilStateVk.h",
+      "src/dawn_native/vulkan/DeviceVk.cpp",
+      "src/dawn_native/vulkan/DeviceVk.h",
+      "src/dawn_native/vulkan/FencedDeleter.cpp",
+      "src/dawn_native/vulkan/FencedDeleter.h",
+      "src/dawn_native/vulkan/Forward.h",
+      "src/dawn_native/vulkan/InputStateVk.cpp",
+      "src/dawn_native/vulkan/InputStateVk.h",
+      "src/dawn_native/vulkan/MemoryAllocator.cpp",
+      "src/dawn_native/vulkan/MemoryAllocator.h",
+      "src/dawn_native/vulkan/NativeSwapChainImplVk.cpp",
+      "src/dawn_native/vulkan/NativeSwapChainImplVk.h",
+      "src/dawn_native/vulkan/PipelineLayoutVk.cpp",
+      "src/dawn_native/vulkan/PipelineLayoutVk.h",
+      "src/dawn_native/vulkan/QueueVk.cpp",
+      "src/dawn_native/vulkan/QueueVk.h",
+      "src/dawn_native/vulkan/RenderPassCache.cpp",
+      "src/dawn_native/vulkan/RenderPassCache.h",
+      "src/dawn_native/vulkan/RenderPassDescriptorVk.cpp",
+      "src/dawn_native/vulkan/RenderPassDescriptorVk.h",
+      "src/dawn_native/vulkan/RenderPipelineVk.cpp",
+      "src/dawn_native/vulkan/RenderPipelineVk.h",
+      "src/dawn_native/vulkan/SamplerVk.cpp",
+      "src/dawn_native/vulkan/SamplerVk.h",
+      "src/dawn_native/vulkan/ShaderModuleVk.cpp",
+      "src/dawn_native/vulkan/ShaderModuleVk.h",
+      "src/dawn_native/vulkan/SwapChainVk.cpp",
+      "src/dawn_native/vulkan/SwapChainVk.h",
+      "src/dawn_native/vulkan/TextureVk.cpp",
+      "src/dawn_native/vulkan/TextureVk.h",
+      "src/dawn_native/vulkan/VulkanFunctions.cpp",
+      "src/dawn_native/vulkan/VulkanFunctions.h",
+      "src/dawn_native/vulkan/VulkanInfo.cpp",
+      "src/dawn_native/vulkan/VulkanInfo.h",
+    ]
+  }
+}
+
+# The shared library for libdawn_native for use by samples, tests, etc.
+shared_library("libdawn_native") {
+  deps = [
+    ":libdawn_native_sources",
+  ]
+  public_configs = [ ":libdawn_public" ]
+}
+
+# The static library for libdawn_native for use by unittests
+static_library("libdawn_native_static") {
+  deps = [
+    ":libdawn_native_sources",
+  ]
+
+  sources = [
+    "src/Empty.cpp",
+  ]
+
+  # Put the internal config public so that unittests can see internal headers
+  public_configs = [ ":libdawn_native_internal" ]
+}
+
+###############################################################################
+# libdawn_wire.so
+###############################################################################
+
+# The meat of the compilation for libdawn_wire so that we can cheaply have
+# shared_library / static_library / component versions of it.
+dawn_generator("libdawn_wire_sources") {
+  target = "dawn_wire"
+  target_type = "source_set"
+
+  configs = [ ":dawn_internal" ]
+  deps = [
+    ":dawn_common",
+    ":dawn_headers",
+  ]
+  defines = [ "DAWN_WIRE_IMPLEMENTATION" ]
+  sources = [
+    "src/dawn_wire/WireCmd.h",
+    "src/include/dawn_wire/Wire.h",
+    "src/include/dawn_wire/dawn_wire_export.h",
+  ]
+}
+
+shared_library("libdawn_wire") {
+  deps = [
+    ":libdawn_wire_sources",
+  ]
+  public_configs = [ ":libdawn_public" ]
+}

DEPS

@@ -0,0 +1,154 @@
+vars = {
+  'chromium_git': 'https://chromium.googlesource.com',
+  'github_git': 'https://github.com',
+
+  'dawn_root': '.',
+  'dawn_standalone': True,
+}
+
+deps = {
+  # Dependencies required to use GN/Clang in standalone
+  '{dawn_root}/build': {
+    'url': '{chromium_git}/chromium/src/build.git@b944b99e72923c5a6699235ed858e725db21f81f',
+    'condition': 'dawn_standalone',
+  },
+  '{dawn_root}/buildtools': {
+    'url': '{chromium_git}/chromium/buildtools.git@94288c26d2ffe3aec9848c147839afee597acefd',
+    'condition': 'dawn_standalone',
+  },
+  '{dawn_root}/tools/clang': {
+    'url': '{chromium_git}/chromium/src/tools/clang.git@c893c7eec4706f8c7fc244ee254b1dadd8f8d158',
+    'condition': 'dawn_standalone',
+  },
+
+  # GTest and GMock
+  '{dawn_root}/testing': {
+    'url': '{chromium_git}/chromium/src/testing@4d706fd80be9e8989aec5235540e7b46d0672826',
+    'condition': 'dawn_standalone',
+  },
+
+  # SPIRV-Cross
+  '{dawn_root}/third_party/spirv-cross': {
+    'url': '{github_git}/Kangz/SPIRV-Cross.git@694cad533296df02b4562f4a5a20cba1d1a9dbaf',
+  },
+}
+
+hooks = [
+  # Pull clang-format binaries using checked-in hashes.
+  {
+    'name': 'clang_format_win',
+    'pattern': '.',
+    'condition': 'host_os == "win" and dawn_standalone',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=win32',
+                '--no_auth',
+                '--bucket', 'chromium-clang-format',
+                '-s', '{dawn_root}/buildtools/win/clang-format.exe.sha1',
+    ],
+  },
+  {
+    'name': 'clang_format_mac',
+    'pattern': '.',
+    'condition': 'host_os == "mac" and dawn_standalone',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=darwin',
+                '--no_auth',
+                '--bucket', 'chromium-clang-format',
+                '-s', '{dawn_root}/buildtools/mac/clang-format.sha1',
+    ],
+  },
+  {
+    'name': 'clang_format_linux',
+    'pattern': '.',
+    'condition': 'host_os == "linux" and dawn_standalone',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=linux*',
+                '--no_auth',
+                '--bucket', 'chromium-clang-format',
+                '-s', '{dawn_root}/buildtools/linux64/clang-format.sha1',
+    ],
+  },
+
+  # Pull GN binaries using checked-in hashes.
+  {
+    'name': 'gn_win',
+    'pattern': '.',
+    'condition': 'host_os == "win" and dawn_standalone',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=win32',
+                '--no_auth',
+                '--bucket', 'chromium-gn',
+                '-s', '{dawn_root}/buildtools/win/gn.exe.sha1',
+    ],
+  },
+  {
+    'name': 'gn_mac',
+    'pattern': '.',
+    'condition': 'host_os == "mac" and dawn_standalone',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=darwin',
+                '--no_auth',
+                '--bucket', 'chromium-gn',
+                '-s', '{dawn_root}/buildtools/mac/gn.sha1',
+    ],
+  },
+  {
+    'name': 'gn_linux64',
+    'pattern': '.',
+    'condition': 'host_os == "linux" and dawn_standalone',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=linux*',
+                '--no_auth',
+                '--bucket', 'chromium-gn',
+                '-s', '{dawn_root}/buildtools/linux64/gn.sha1',
+    ],
+  },
+
+  # Pull the compilers and system libraries for hermetic builds
+  {
+    'name': 'sysroot_x86',
+    'pattern': '.',
+    'condition': 'checkout_linux and ((checkout_x86 or checkout_x64) and dawn_standalone)',
+    'action': ['python', '{dawn_root}/build/linux/sysroot_scripts/install-sysroot.py',
+               '--arch=x86'],
+  },
+  {
+    'name': 'sysroot_x64',
+    'pattern': '.',
+    'condition': 'checkout_linux and (checkout_x64 and dawn_standalone)',
+    'action': ['python', '{dawn_root}/build/linux/sysroot_scripts/install-sysroot.py',
+               '--arch=x64'],
+  },
+  {
+    # Update the Windows toolchain if necessary.  Must run before 'clang' below.
+    'name': 'win_toolchain',
+    'pattern': '.',
+    'condition': 'checkout_win and dawn_standalone',
+    'action': ['python', '{dawn_root}/build/vs_toolchain.py', 'update', '--force'],
+  },
+  {
+    # Note: On Win, this should run after win_toolchain, as it may use it.
+    'name': 'clang',
+    'pattern': '.',
+    'action': ['python', '{dawn_root}/tools/clang/scripts/update.py'],
+    'condition': 'dawn_standalone',
+  },
+  {
+    # Pull rc binaries using checked-in hashes.
+    'name': 'rc_win',
+    'pattern': '.',
+    'condition': 'checkout_win and (host_os == "win" and dawn_standalone)',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--no_auth',
+                '--bucket', 'chromium-browser-clang/rc',
+                '-s', '{dawn_root}/build/toolchain/win/rc/win/rc.exe.sha1',
+    ],
+  },
+]

build_overrides/build.gni

@@ -0,0 +1,27 @@
+# Copyright 2018 The Dawn Authors
+#
+# 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
+#
+#     http://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.
+
+# Tell Dawn and dependencies to not do Chromium-specific things
+build_with_chromium = false
+
+# Don't use Chromium's third_party/binutils
+linux_use_bundled_binutils_override = false
+
+# In standalone Dawn builds, don't try to use the hermetic install of Xcode
+# that Chromium uses
+use_system_xcode = true
+
+# Android 32-bit non-component, non-clang builds cannot have symbol_level=2
+# due to 4GiB file size limit, see https://crbug.com/648948.
+ignore_elf32_limitations = false

build_overrides/dawn.gni

@@ -0,0 +1,19 @@
+# Copyright 2018 The Dawn Authors
+#
+# 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
+#
+#     http://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.
+
+# Whether we are building from Dawn's repository
+dawn_standalone = true
+
+# Where to find SPIRV-Cross if we aren't in standalone
+dawn_spirv_cross_dir = "//third_party/spirv-cross/"

generator/templates/dawn_native/ProcTable.cpp

@@ -52,9 +52,10 @@ namespace dawn_native {
                             return false;
                         }
                     {% else %}
-                        (void) self;
+                        DAWN_UNUSED(self);
                     {% endif %}
                     bool error = false;
+                    DAWN_UNUSED(error);
                     {% for arg in method.arguments %}
                         {% set cppType = as_cppType(arg.type.name) %}
                         {% set argName = as_varName(arg.name) %}
@@ -65,7 +66,7 @@ namespace dawn_native {
                                 error = true;
                             }
                         {% else %}
-                            (void) {{argName}};
+                            DAWN_UNUSED({{argName}});
                         {% endif %}
                         if (error) {
                             {% if type.is_builder %}

src/Empty.cpp

@@ -0,0 +1,16 @@
+// Copyright 2018 The Dawn Authors
+//
+// 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
+//
+//     http://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.
+
+// This is an empty file used as a workaround for OSX's libtool requiring that a response file
+// contains at least one file.