1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "content/renderer/skia_benchmarking_extension.h" 6 7 #include "base/base64.h" 8 #include "base/time/time.h" 9 #include "base/values.h" 10 #include "cc/base/math_util.h" 11 #include "cc/resources/picture.h" 12 #include "content/public/renderer/v8_value_converter.h" 13 #include "content/renderer/render_thread_impl.h" 14 #include "gin/arguments.h" 15 #include "gin/handle.h" 16 #include "gin/object_template_builder.h" 17 #include "skia/ext/benchmarking_canvas.h" 18 #include "third_party/WebKit/public/platform/WebArrayBuffer.h" 19 #include "third_party/WebKit/public/web/WebArrayBufferConverter.h" 20 #include "third_party/WebKit/public/web/WebFrame.h" 21 #include "third_party/WebKit/public/web/WebKit.h" 22 #include "third_party/skia/include/core/SkCanvas.h" 23 #include "third_party/skia/include/core/SkColorPriv.h" 24 #include "third_party/skia/include/core/SkGraphics.h" 25 #include "third_party/skia/include/core/SkStream.h" 26 #include "third_party/skia/src/utils/debugger/SkDebugCanvas.h" 27 #include "third_party/skia/src/utils/debugger/SkDrawCommand.h" 28 #include "ui/gfx/rect_conversions.h" 29 #include "ui/gfx/skia_util.h" 30 #include "v8/include/v8.h" 31 32 33 namespace content { 34 35 namespace { 36 37 scoped_ptr<base::Value> ParsePictureArg(v8::Isolate* isolate, 38 v8::Handle<v8::Value> arg) { 39 scoped_ptr<content::V8ValueConverter> converter( 40 content::V8ValueConverter::create()); 41 return scoped_ptr<base::Value>( 42 converter->FromV8Value(arg, isolate->GetCurrentContext())); 43 } 44 45 scoped_refptr<cc::Picture> ParsePictureStr(v8::Isolate* isolate, 46 v8::Handle<v8::Value> arg) { 47 scoped_ptr<base::Value> picture_value = ParsePictureArg(isolate, arg); 48 if (!picture_value) 49 return NULL; 50 return cc::Picture::CreateFromSkpValue(picture_value.get()); 51 } 52 53 scoped_refptr<cc::Picture> ParsePictureHash(v8::Isolate* isolate, 54 v8::Handle<v8::Value> arg) { 55 scoped_ptr<base::Value> picture_value = ParsePictureArg(isolate, arg); 56 if (!picture_value) 57 return NULL; 58 return cc::Picture::CreateFromValue(picture_value.get()); 59 } 60 61 } // namespace 62 63 gin::WrapperInfo SkiaBenchmarking::kWrapperInfo = {gin::kEmbedderNativeGin}; 64 65 // static 66 void SkiaBenchmarking::Install(blink::WebFrame* frame) { 67 v8::Isolate* isolate = blink::mainThreadIsolate(); 68 v8::HandleScope handle_scope(isolate); 69 v8::Handle<v8::Context> context = frame->mainWorldScriptContext(); 70 if (context.IsEmpty()) 71 return; 72 73 v8::Context::Scope context_scope(context); 74 75 gin::Handle<SkiaBenchmarking> controller = 76 gin::CreateHandle(isolate, new SkiaBenchmarking()); 77 if (controller.IsEmpty()) 78 return; 79 80 v8::Handle<v8::Object> global = context->Global(); 81 v8::Handle<v8::Object> chrome = 82 global->Get(gin::StringToV8(isolate, "chrome"))->ToObject(); 83 if (chrome.IsEmpty()) { 84 chrome = v8::Object::New(isolate); 85 global->Set(gin::StringToV8(isolate, "chrome"), chrome); 86 } 87 chrome->Set(gin::StringToV8(isolate, "skiaBenchmarking"), controller.ToV8()); 88 } 89 90 // static 91 void SkiaBenchmarking::Initialize() { 92 DCHECK(RenderThreadImpl::current()); 93 // FIXME: remove this after Skia updates SkGraphics::Init() to be 94 // thread-safe and idempotent. 95 static bool skia_initialized = false; 96 if (!skia_initialized) { 97 LOG(WARNING) << "Enabling unsafe Skia benchmarking extension."; 98 SkGraphics::Init(); 99 skia_initialized = true; 100 } 101 } 102 103 SkiaBenchmarking::SkiaBenchmarking() { 104 Initialize(); 105 } 106 107 SkiaBenchmarking::~SkiaBenchmarking() {} 108 109 gin::ObjectTemplateBuilder SkiaBenchmarking::GetObjectTemplateBuilder( 110 v8::Isolate* isolate) { 111 return gin::Wrappable<SkiaBenchmarking>::GetObjectTemplateBuilder(isolate) 112 .SetMethod("rasterize", &SkiaBenchmarking::Rasterize) 113 .SetMethod("getOps", &SkiaBenchmarking::GetOps) 114 .SetMethod("getOpTimings", &SkiaBenchmarking::GetOpTimings) 115 .SetMethod("getInfo", &SkiaBenchmarking::GetInfo); 116 } 117 118 void SkiaBenchmarking::Rasterize(gin::Arguments* args) { 119 v8::Isolate* isolate = args->isolate(); 120 if (args->PeekNext().IsEmpty()) 121 return; 122 v8::Handle<v8::Value> picture_handle; 123 args->GetNext(&picture_handle); 124 scoped_refptr<cc::Picture> picture = 125 ParsePictureHash(isolate, picture_handle); 126 if (!picture.get()) 127 return; 128 129 double scale = 1.0; 130 gfx::Rect clip_rect(picture->LayerRect()); 131 int stop_index = -1; 132 bool overdraw = false; 133 134 v8::Handle<v8::Context> context = isolate->GetCurrentContext(); 135 if (!args->PeekNext().IsEmpty()) { 136 v8::Handle<v8::Value> params; 137 args->GetNext(¶ms); 138 scoped_ptr<content::V8ValueConverter> converter( 139 content::V8ValueConverter::create()); 140 scoped_ptr<base::Value> params_value( 141 converter->FromV8Value(params, context)); 142 143 const base::DictionaryValue* params_dict = NULL; 144 if (params_value.get() && params_value->GetAsDictionary(¶ms_dict)) { 145 params_dict->GetDouble("scale", &scale); 146 params_dict->GetInteger("stop", &stop_index); 147 params_dict->GetBoolean("overdraw", &overdraw); 148 149 const base::Value* clip_value = NULL; 150 if (params_dict->Get("clip", &clip_value)) 151 cc::MathUtil::FromValue(clip_value, &clip_rect); 152 } 153 } 154 155 gfx::RectF clip(clip_rect); 156 clip.Intersect(picture->LayerRect()); 157 clip.Scale(scale); 158 gfx::Rect snapped_clip = gfx::ToEnclosingRect(clip); 159 160 SkBitmap bitmap; 161 if (!bitmap.setConfig(SkBitmap::kARGB_8888_Config, snapped_clip.width(), 162 snapped_clip.height())) 163 return; 164 if (!bitmap.allocPixels()) 165 return; 166 bitmap.eraseARGB(0, 0, 0, 0); 167 168 SkCanvas canvas(bitmap); 169 canvas.translate(SkFloatToScalar(-clip.x()), SkFloatToScalar(-clip.y())); 170 canvas.clipRect(gfx::RectToSkRect(snapped_clip)); 171 canvas.scale(scale, scale); 172 canvas.translate(picture->LayerRect().x(), picture->LayerRect().y()); 173 174 // First, build a debug canvas for the given picture. 175 SkDebugCanvas debug_canvas(picture->LayerRect().width(), 176 picture->LayerRect().height()); 177 picture->Replay(&debug_canvas); 178 179 // Raster the requested command subset into the bitmap-backed canvas. 180 int last_index = debug_canvas.getSize() - 1; 181 if (last_index >= 0) { 182 debug_canvas.setOverdrawViz(overdraw); 183 debug_canvas.drawTo( 184 &canvas, 185 stop_index < 0 ? last_index : std::min(last_index, stop_index)); 186 } 187 188 blink::WebArrayBuffer buffer = 189 blink::WebArrayBuffer::create(bitmap.getSize(), 1); 190 uint32* packed_pixels = reinterpret_cast<uint32*>(bitmap.getPixels()); 191 uint8* buffer_pixels = reinterpret_cast<uint8*>(buffer.data()); 192 // Swizzle from native Skia format to RGBA as we copy out. 193 for (size_t i = 0; i < bitmap.getSize(); i += 4) { 194 uint32 c = packed_pixels[i >> 2]; 195 buffer_pixels[i] = SkGetPackedR32(c); 196 buffer_pixels[i + 1] = SkGetPackedG32(c); 197 buffer_pixels[i + 2] = SkGetPackedB32(c); 198 buffer_pixels[i + 3] = SkGetPackedA32(c); 199 } 200 201 v8::Handle<v8::Object> result = v8::Object::New(isolate); 202 result->Set(v8::String::NewFromUtf8(isolate, "width"), 203 v8::Number::New(isolate, snapped_clip.width())); 204 result->Set(v8::String::NewFromUtf8(isolate, "height"), 205 v8::Number::New(isolate, snapped_clip.height())); 206 result->Set(v8::String::NewFromUtf8(isolate, "data"), 207 blink::WebArrayBufferConverter::toV8Value( 208 &buffer, context->Global(), isolate)); 209 210 args->Return(result); 211 } 212 213 void SkiaBenchmarking::GetOps(gin::Arguments* args) { 214 v8::Isolate* isolate = args->isolate(); 215 if (args->PeekNext().IsEmpty()) 216 return; 217 v8::Handle<v8::Value> picture_handle; 218 args->GetNext(&picture_handle); 219 scoped_refptr<cc::Picture> picture = 220 ParsePictureHash(isolate, picture_handle); 221 if (!picture.get()) 222 return; 223 224 gfx::Rect bounds = picture->LayerRect(); 225 SkDebugCanvas canvas(bounds.width(), bounds.height()); 226 picture->Replay(&canvas); 227 228 v8::Handle<v8::Array> result = v8::Array::New(isolate, canvas.getSize()); 229 for (int i = 0; i < canvas.getSize(); ++i) { 230 DrawType cmd_type = canvas.getDrawCommandAt(i)->getType(); 231 v8::Handle<v8::Object> cmd = v8::Object::New(isolate); 232 cmd->Set(v8::String::NewFromUtf8(isolate, "cmd_type"), 233 v8::Integer::New(isolate, cmd_type)); 234 cmd->Set(v8::String::NewFromUtf8(isolate, "cmd_string"), 235 v8::String::NewFromUtf8( 236 isolate, SkDrawCommand::GetCommandString(cmd_type))); 237 238 SkTDArray<SkString*>* info = canvas.getCommandInfo(i); 239 DCHECK(info); 240 241 v8::Local<v8::Array> v8_info = v8::Array::New(isolate, info->count()); 242 for (int j = 0; j < info->count(); ++j) { 243 const SkString* info_str = (*info)[j]; 244 DCHECK(info_str); 245 v8_info->Set(j, v8::String::NewFromUtf8(isolate, info_str->c_str())); 246 } 247 248 cmd->Set(v8::String::NewFromUtf8(isolate, "info"), v8_info); 249 250 result->Set(i, cmd); 251 } 252 253 args->Return(result.As<v8::Object>()); 254 } 255 256 void SkiaBenchmarking::GetOpTimings(gin::Arguments* args) { 257 v8::Isolate* isolate = args->isolate(); 258 if (args->PeekNext().IsEmpty()) 259 return; 260 v8::Handle<v8::Value> picture_handle; 261 args->GetNext(&picture_handle); 262 scoped_refptr<cc::Picture> picture = 263 ParsePictureHash(isolate, picture_handle); 264 if (!picture.get()) 265 return; 266 267 gfx::Rect bounds = picture->LayerRect(); 268 269 // Measure the total time by drawing straight into a bitmap-backed canvas. 270 SkBitmap bitmap; 271 bitmap.allocN32Pixels(bounds.width(), bounds.height()); 272 SkCanvas bitmap_canvas(bitmap); 273 bitmap_canvas.clear(SK_ColorTRANSPARENT); 274 base::TimeTicks t0 = base::TimeTicks::HighResNow(); 275 picture->Replay(&bitmap_canvas); 276 base::TimeDelta total_time = base::TimeTicks::HighResNow() - t0; 277 278 // Gather per-op timing info by drawing into a BenchmarkingCanvas. 279 skia::BenchmarkingCanvas benchmarking_canvas(bounds.width(), bounds.height()); 280 picture->Replay(&benchmarking_canvas); 281 282 v8::Local<v8::Array> op_times = 283 v8::Array::New(isolate, benchmarking_canvas.CommandCount()); 284 for (size_t i = 0; i < benchmarking_canvas.CommandCount(); ++i) 285 op_times->Set(i, v8::Number::New(isolate, benchmarking_canvas.GetTime(i))); 286 287 v8::Handle<v8::Object> result = v8::Object::New(isolate); 288 result->Set(v8::String::NewFromUtf8(isolate, "total_time"), 289 v8::Number::New(isolate, total_time.InMillisecondsF())); 290 result->Set(v8::String::NewFromUtf8(isolate, "cmd_times"), op_times); 291 292 args->Return(result); 293 } 294 295 void SkiaBenchmarking::GetInfo(gin::Arguments* args) { 296 v8::Isolate* isolate = args->isolate(); 297 if (args->PeekNext().IsEmpty()) 298 return; 299 v8::Handle<v8::Value> picture_handle; 300 args->GetNext(&picture_handle); 301 scoped_refptr<cc::Picture> picture = 302 ParsePictureStr(isolate, picture_handle); 303 if (!picture.get()) 304 return; 305 306 v8::Handle<v8::Object> result = v8::Object::New(isolate); 307 result->Set(v8::String::NewFromUtf8(isolate, "width"), 308 v8::Number::New(isolate, picture->LayerRect().width())); 309 result->Set(v8::String::NewFromUtf8(isolate, "height"), 310 v8::Number::New(isolate, picture->LayerRect().height())); 311 312 args->Return(result); 313 } 314 315 } // namespace content 316