Add samples to BUILD.gn and their deps to DEPS

Also add missing GLFW DEPS entry

BUILD.gn

@@ -168,6 +168,10 @@ config("dawn_internal") {
   }
 
   configs = [ ":libdawn_public" ]
+
+  # Only internal Dawn targets can use this config, this means only targets in
+  # this BUILD.gn file.
+  visibility = [ ":*" ]
 }
 
 # Executable needs an rpath to find our shared libraries on OSX
@@ -885,3 +889,89 @@ test("dawn_end2end_tests") {
     "src/tests/end2end/ViewportOrientationTests.cpp",
   ]
 }
+
+###############################################################################
+# Dawn samples, only in standalone builds
+###############################################################################
+
+if (dawn_standalone) {
+  # Static library to contain code and dependencies common to all samples
+  static_library("dawn_sample_utils") {
+    sources = [
+      "examples/SampleUtils.cpp",
+      "examples/SampleUtils.h",
+    ]
+
+    # Export all of these as public deps so that `gn check` allows includes
+    public_deps = [
+      ":dawn_common",
+      ":dawn_utils",
+      ":libdawn",
+      ":libdawn_native",
+      ":libdawn_wire",
+      "third_party:glfw",
+    ]
+    public_configs = [ ":dawn_internal" ]
+  }
+
+  # Template for samples to avoid listing dawn_sample_utils as a dep every time
+  template("dawn_sample") {
+    executable(target_name) {
+      deps = [
+        ":dawn_sample_utils",
+      ]
+      forward_variables_from(invoker, "*", [ "deps" ])
+
+      if (defined(invoker.deps)) {
+        deps += invoker.deps
+      }
+    }
+  }
+
+  dawn_sample("CppHelloTriangle") {
+    sources = [
+      "examples/CppHelloTriangle.cpp",
+    ]
+  }
+
+  dawn_sample("CHelloTriangle") {
+    sources = [
+      "examples/CHelloTriangle.cpp",
+    ]
+  }
+
+  dawn_sample("ComputeBoids") {
+    sources = [
+      "examples/ComputeBoids.cpp",
+    ]
+    deps = [
+      "third_party:glm",
+    ]
+  }
+
+  dawn_sample("Animometer") {
+    sources = [
+      "examples/Animometer.cpp",
+    ]
+  }
+
+  dawn_sample("CubeReflection") {
+    sources = [
+      "examples/CubeReflection.cpp",
+    ]
+    deps = [
+      "third_party:glm",
+    ]
+  }
+
+  dawn_sample("glTFViewer") {
+    sources = [
+      "examples/glTFViewer/Camera.inl",
+      "examples/glTFViewer/glTFViewer.cpp",
+    ]
+    deps = [
+      "third_party:glm",
+      "third_party:tiny_gltf_loader",
+    ]
+  }
+}

DEPS

@@ -26,7 +26,7 @@ deps = {
     'url': '{chromium_git}/chromium/src/testing@4d706fd80be9e8989aec5235540e7b46d0672826',
     'condition': 'dawn_standalone',
   },
-  'third_party/googletest': {
+  '{dawn_root}/third_party/googletest': {
     'url': '{github_git}/google/googletest.git@98a0d007d7092b72eea0e501bb9ad17908a1a036',
     'condition': 'dawn_standalone',
   },
@@ -55,6 +55,21 @@ deps = {
     'condition': 'dawn_standalone',
   },
 
+  # GLFW for tests and samples
+  '{dawn_root}/third_party/glfw': {
+    'url': '{github_git}/glfw/glfw.git@096efdf798896cff80a0b2db08d7398b703406fe',
+    'condition': 'dawn_standalone',
+  },
+
+  # Dependencies for samples: stb and GLM
+  '{dawn_root}/third_party/stb': {
+    'url': '{github_git}/nothings/stb.git@c7110588a4d24c4bb5155c184fbb77dd90b3116e',
+    'condition': 'dawn_standalone',
+  },
+  '{dawn_root}/third_party/glm': {
+    'url': '{github_git}/g-truc/glm.git@06f084063fd6d9aa2ef6904517650700ae47b63d',
+    'condition': 'dawn_standalone',
+  },
 }
 
 hooks = [

examples/CubeReflection.cpp

@@ -18,9 +18,9 @@
 #include "utils/SystemUtils.h"
 
 #include <vector>
-#include <glm/glm/glm.hpp>
-#include <glm/glm/gtc/matrix_transform.hpp>
-#include <glm/glm/gtc/type_ptr.hpp>
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include <glm/gtc/type_ptr.hpp>
 
 dawn::Device device;
 

examples/glTFViewer/glTFViewer.cpp

@@ -18,7 +18,7 @@
 #define __STDC_FORMAT_MACROS
 #endif
 
-#include "SampleUtils.h"
+#include "../SampleUtils.h"
 
 #include "common/Assert.h"
 #include "common/Math.h"
@@ -36,6 +36,7 @@
 #define TINYGLTF_LOADER_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
 #define PICOJSON_ASSERT ASSERT
+#undef __STDC_FORMAT_MACROS
 #include <tinygltfloader/tiny_gltf_loader.h>
 
 #include "GLFW/glfw3.h"

third_party/BUILD.gn

@@ -368,3 +368,56 @@ static_library("glfw") {
     ]
   }
 }
+
+###############################################################################
+# Header-only dependencies for samples
+###############################################################################
+
+if (dawn_standalone) {
+  # GLM
+  config("glm_public_config") {
+    include_dirs = [ "glm" ]
+  }
+  source_set("glm") {
+    public_configs = [ ":glm_public_config" ]
+    # GLM is header only but has too many files to list them.
+  }
+
+  # STB
+  config("stb_public_config") {
+    include_dirs = [ "stb" ]
+    cflags_cc = [ "-Wno-implicit-fallthrough" ]
+  }
+  source_set("stb") {
+    public_configs = [ ":stb_public_config" ]
+    sources = [
+      "stb/stb_image.h",
+    ]
+  }
+
+  # PicoJSON
+  config("picojson_public_config") {
+    include_dirs = [ "." ]
+  }
+  source_set("picojson") {
+    public_configs = [ ":picojson_public_config" ]
+    sources = [
+      "picojson/picojson.h",
+    ]
+  }
+
+  # Tiny glTF Loader
+  config("tiny_gltf_loader_public_config") {
+    include_dirs = [ "." ]
+  }
+  source_set("tiny_gltf_loader") {
+    public_configs = [ ":tiny_gltf_loader_public_config" ]
+    public_deps = [
+      ":picojson",
+      ":stb",
+    ]
+    sources = [
+      "tinygltfloader/tiny_gltf_loader.h",
+    ]
+  }
+}