content/renderer/gpu/render_widget_compositor.cc

   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/gpu/render_widget_compositor.h"
   6
   7 #include <limits>
   8 #include <string>
   9
  10 #include "base/command_line.h"
  11 #include "base/location.h"
  12 #include "base/logging.h"
  13 #include "base/metrics/field_trial.h"
  14 #include "base/single_thread_task_runner.h"
  15 #include "base/strings/string_number_conversions.h"
  16 #include "base/synchronization/lock.h"
  17 #include "base/sys_info.h"
  18 #include "base/thread_task_runner_handle.h"
  19 #include "base/time/time.h"
  20 #include "base/values.h"
  21 #include "cc/animation/animation_host.h"
  22 #include "cc/animation/animation_timeline.h"
  23 #include "cc/base/switches.h"
  24 #include "cc/blink/web_compositor_animation_timeline_impl.h"
  25 #include "cc/blink/web_layer_impl.h"
  26 #include "cc/debug/layer_tree_debug_state.h"
  27 #include "cc/debug/micro_benchmark.h"
  28 #include "cc/input/layer_selection_bound.h"
  29 #include "cc/layers/layer.h"
  30 #include "cc/output/begin_frame_args.h"
  31 #include "cc/output/copy_output_request.h"
  32 #include "cc/output/copy_output_result.h"
  33 #include "cc/output/latency_info_swap_promise.h"
  34 #include "cc/output/swap_promise.h"
  35 #include "cc/resources/single_release_callback.h"
  36 #include "cc/scheduler/begin_frame_source.h"
  37 #include "cc/trees/latency_info_swap_promise_monitor.h"
  38 #include "cc/trees/layer_tree_host.h"
  39 #include "components/scheduler/renderer/renderer_scheduler.h"
  40 #include "content/common/content_switches_internal.h"
  41 #include "content/common/gpu/client/context_provider_command_buffer.h"
  42 #include "content/public/common/content_switches.h"
  43 #include "content/renderer/input/input_handler_manager.h"
  44 #include "gpu/command_buffer/client/gles2_interface.h"
  45 #include "third_party/WebKit/public/platform/WebCompositeAndReadbackAsyncCallback.h"
  46 #include "third_party/WebKit/public/platform/WebLayoutAndPaintAsyncCallback.h"
  47 #include "third_party/WebKit/public/platform/WebSize.h"
  48 #include "third_party/WebKit/public/web/WebKit.h"
  49 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
  50 #include "third_party/WebKit/public/web/WebSelection.h"
  51 #include "third_party/WebKit/public/web/WebWidget.h"
  52 #include "ui/gl/gl_switches.h"
  53 #include "ui/native_theme/native_theme_switches.h"
  54
  55 #if defined(OS_ANDROID)
  56 #include "base/android/build_info.h"
  57 #include "content/renderer/android/synchronous_compositor_factory.h"
  58 #include "ui/gfx/android/device_display_info.h"
  59 #endif
  60
  61 namespace base {
  62 class Value;
  63 }
  64
  65 namespace cc {
  66 class Layer;
  67 }
  68
  69 using blink::WebBeginFrameArgs;
  70 using blink::WebFloatPoint;
  71 using blink::WebRect;
  72 using blink::WebSelection;
  73 using blink::WebSize;
  74 using blink::WebTopControlsState;
  75
  76 namespace content {
  77 namespace {
  78
  79 bool GetSwitchValueAsInt(const base::CommandLine& command_line,
  80                          const std::string& switch_string,
  81                          int min_value,
  82                          int max_value,
  83                          int* result) {
  84   std::string string_value = command_line.GetSwitchValueASCII(switch_string);
  85   int int_value;
  86   if (base::StringToInt(string_value, &int_value) &&
  87       int_value >= min_value && int_value <= max_value) {
  88     *result = int_value;
  89     return true;
  90   } else {
  91     LOG(WARNING) << "Failed to parse switch " << switch_string  << ": " <<
  92         string_value;
  93     return false;
  94   }
  95 }
  96
  97 cc::LayerSelectionBound ConvertWebSelectionBound(
  98     const WebSelection& web_selection,
  99     bool is_start) {
 100   cc::LayerSelectionBound cc_bound;
 101   if (web_selection.isNone())
 102     return cc_bound;
 103
 104   const blink::WebSelectionBound& web_bound =
 105       is_start ? web_selection.start() : web_selection.end();
 106   DCHECK(web_bound.layerId);
 107   cc_bound.type = cc::SELECTION_BOUND_CENTER;
 108   if (web_selection.isRange()) {
 109     if (is_start) {
 110       cc_bound.type = web_bound.isTextDirectionRTL ? cc::SELECTION_BOUND_RIGHT
 111                                                    : cc::SELECTION_BOUND_LEFT;
 112     } else {
 113       cc_bound.type = web_bound.isTextDirectionRTL ? cc::SELECTION_BOUND_LEFT
 114                                                    : cc::SELECTION_BOUND_RIGHT;
 115     }
 116   }
 117   cc_bound.layer_id = web_bound.layerId;
 118   cc_bound.edge_top = gfx::Point(web_bound.edgeTopInLayer);
 119   cc_bound.edge_bottom = gfx::Point(web_bound.edgeBottomInLayer);
 120   return cc_bound;
 121 }
 122
 123 cc::LayerSelection ConvertWebSelection(const WebSelection& web_selection) {
 124   cc::LayerSelection cc_selection;
 125   cc_selection.start = ConvertWebSelectionBound(web_selection, true);
 126   cc_selection.end = ConvertWebSelectionBound(web_selection, false);
 127   cc_selection.is_editable = web_selection.isEditable();
 128   cc_selection.is_empty_text_form_control =
 129       web_selection.isEmptyTextFormControl();
 130   return cc_selection;
 131 }
 132
 133 gfx::Size CalculateDefaultTileSize(RenderWidget* widget) {
 134   int default_tile_size = 256;
 135 #if defined(OS_ANDROID)
 136   // TODO(epenner): unify this for all platforms if it
 137   // makes sense (http://crbug.com/159524)
 138
 139   gfx::DeviceDisplayInfo info;
 140   bool real_size_supported = true;
 141   int display_width = info.GetPhysicalDisplayWidth();
 142   int display_height = info.GetPhysicalDisplayHeight();
 143   if (display_width == 0 || display_height == 0) {
 144     real_size_supported = false;
 145     display_width = info.GetDisplayWidth();
 146     display_height = info.GetDisplayHeight();
 147   }
 148
 149   int portrait_width = std::min(display_width, display_height);
 150   int landscape_width = std::max(display_width, display_height);
 151
 152   if (real_size_supported) {
 153     // Maximum HD dimensions should be 768x1280
 154     // Maximum FHD dimensions should be 1200x1920
 155     if (portrait_width > 768 || landscape_width > 1280)
 156       default_tile_size = 384;
 157     if (portrait_width > 1200 || landscape_width > 1920)
 158       default_tile_size = 512;
 159
 160     // Adjust for some resolutions that barely straddle an extra
 161     // tile when in portrait mode. This helps worst case scroll/raster
 162     // by not needing a full extra tile for each row.
 163     if (default_tile_size == 256 && portrait_width == 768)
 164       default_tile_size += 32;
 165     if (default_tile_size == 384 && portrait_width == 1200)
 166       default_tile_size += 32;
 167   } else {
 168     // We don't know the exact resolution due to screen controls etc.
 169     // So this just estimates the values above using tile counts.
 170     int numTiles = (display_width * display_height) / (256 * 256);
 171     if (numTiles > 16)
 172       default_tile_size = 384;
 173     if (numTiles >= 40)
 174       default_tile_size = 512;
 175   }
 176 #elif defined(OS_CHROMEOS)
 177   // Use 512 for high DPI (dsf=2.0f) devices.
 178   if (widget->screen_info().deviceScaleFactor >= 2.0f)
 179     default_tile_size = 512;
 180 #endif
 181
 182   return gfx::Size(default_tile_size, default_tile_size);
 183 }
 184
 185 // Check cc::TopControlsState, and blink::WebTopControlsState
 186 // are kept in sync.
 187 static_assert(int(blink::WebTopControlsBoth) == int(cc::BOTH),
 188               "mismatching enums: BOTH");
 189 static_assert(int(blink::WebTopControlsHidden) == int(cc::HIDDEN),
 190               "mismatching enums: HIDDEN");
 191 static_assert(int(blink::WebTopControlsShown) == int(cc::SHOWN),
 192               "mismatching enums: SHOWN");
 193
 194 static cc::TopControlsState ConvertTopControlsState(
 195     WebTopControlsState state) {
 196   return static_cast<cc::TopControlsState>(state);
 197 }
 198
 199 }  // namespace
 200
 201 // static
 202 scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
 203     RenderWidget* widget,
 204     CompositorDependencies* compositor_deps) {
 205   scoped_ptr<RenderWidgetCompositor> compositor(
 206       new RenderWidgetCompositor(widget, compositor_deps));
 207   compositor->Initialize();
 208   return compositor;
 209 }
 210
 211 RenderWidgetCompositor::RenderWidgetCompositor(
 212     RenderWidget* widget,
 213     CompositorDependencies* compositor_deps)
 214     : num_failed_recreate_attempts_(0),
 215       widget_(widget),
 216       compositor_deps_(compositor_deps),
 217       layout_and_paint_async_callback_(nullptr),
 218       weak_factory_(this) {
 219 }
 220
 221 void RenderWidgetCompositor::Initialize() {
 222   base::CommandLine* cmd = base::CommandLine::ForCurrentProcess();
 223
 224   cc::LayerTreeSettings settings;
 225
 226   // For web contents, layer transforms should scale up the contents of layers
 227   // to keep content always crisp when possible.
 228   settings.layer_transforms_should_scale_layer_contents = true;
 229
 230   if (cmd->HasSwitch(switches::kDisableGpuVsync)) {
 231     std::string display_vsync_string =
 232         cmd->GetSwitchValueASCII(switches::kDisableGpuVsync);
 233     if (display_vsync_string == "gpu") {
 234       settings.renderer_settings.disable_display_vsync = true;
 235     } else if (display_vsync_string == "beginframe") {
 236       settings.wait_for_beginframe_interval = false;
 237     } else {
 238       settings.renderer_settings.disable_display_vsync = true;
 239       settings.wait_for_beginframe_interval = false;
 240     }
 241   }
 242   settings.main_frame_before_activation_enabled =
 243       cmd->HasSwitch(cc::switches::kEnableMainFrameBeforeActivation) &&
 244       !cmd->HasSwitch(cc::switches::kDisableMainFrameBeforeActivation);
 245   settings.accelerated_animation_enabled =
 246       compositor_deps_->IsThreadedAnimationEnabled();
 247   const std::string slimming_group =
 248       base::FieldTrialList::FindFullName("SlimmingPaint");
 249   settings.use_display_lists =
 250       (cmd->HasSwitch(switches::kEnableSlimmingPaint) ||
 251       !cmd->HasSwitch(switches::kDisableSlimmingPaint)) &&
 252       (slimming_group != "DisableSlimmingPaint");
 253   if (cmd->HasSwitch(switches::kEnableCompositorAnimationTimelines)) {
 254     settings.use_compositor_animation_timelines = true;
 255     blink::WebRuntimeFeatures::enableCompositorAnimationTimelines(true);
 256   }
 257
 258   settings.default_tile_size = CalculateDefaultTileSize(widget_);
 259   if (cmd->HasSwitch(switches::kDefaultTileWidth)) {
 260     int tile_width = 0;
 261     GetSwitchValueAsInt(*cmd,
 262                         switches::kDefaultTileWidth,
 263                         1,
 264                         std::numeric_limits<int>::max(),
 265                         &tile_width);
 266     settings.default_tile_size.set_width(tile_width);
 267   }
 268   if (cmd->HasSwitch(switches::kDefaultTileHeight)) {
 269     int tile_height = 0;
 270     GetSwitchValueAsInt(*cmd,
 271                         switches::kDefaultTileHeight,
 272                         1,
 273                         std::numeric_limits<int>::max(),
 274                         &tile_height);
 275     settings.default_tile_size.set_height(tile_height);
 276   }
 277
 278   int max_untiled_layer_width = settings.max_untiled_layer_size.width();
 279   if (cmd->HasSwitch(switches::kMaxUntiledLayerWidth)) {
 280     GetSwitchValueAsInt(*cmd, switches::kMaxUntiledLayerWidth, 1,
 281                         std::numeric_limits<int>::max(),
 282                         &max_untiled_layer_width);
 283   }
 284   int max_untiled_layer_height = settings.max_untiled_layer_size.height();
 285   if (cmd->HasSwitch(switches::kMaxUntiledLayerHeight)) {
 286     GetSwitchValueAsInt(*cmd, switches::kMaxUntiledLayerHeight, 1,
 287                         std::numeric_limits<int>::max(),
 288                         &max_untiled_layer_height);
 289   }
 290
 291   settings.max_untiled_layer_size = gfx::Size(max_untiled_layer_width,
 292                                            max_untiled_layer_height);
 293
 294   settings.gpu_rasterization_msaa_sample_count =
 295       compositor_deps_->GetGpuRasterizationMSAASampleCount();
 296   settings.gpu_rasterization_forced =
 297       compositor_deps_->IsGpuRasterizationForced();
 298   settings.gpu_rasterization_enabled =
 299       compositor_deps_->IsGpuRasterizationEnabled();
 300
 301   settings.can_use_lcd_text = compositor_deps_->IsLcdTextEnabled();
 302   settings.use_distance_field_text =
 303       compositor_deps_->IsDistanceFieldTextEnabled();
 304   settings.use_zero_copy = compositor_deps_->IsZeroCopyEnabled();
 305   settings.use_persistent_map_for_gpu_memory_buffers =
 306       compositor_deps_->IsPersistentGpuMemoryBufferEnabled();
 307   settings.enable_elastic_overscroll =
 308       compositor_deps_->IsElasticOverscrollEnabled();
 309   settings.use_image_texture_targets =
 310       compositor_deps_->GetImageTextureTargets();
 311   settings.gather_pixel_refs = compositor_deps_->IsGatherPixelRefsEnabled();
 312
 313   if (cmd->HasSwitch(cc::switches::kTopControlsShowThreshold)) {
 314       std::string top_threshold_str =
 315           cmd->GetSwitchValueASCII(cc::switches::kTopControlsShowThreshold);
 316       double show_threshold;
 317       if (base::StringToDouble(top_threshold_str, &show_threshold) &&
 318           show_threshold >= 0.f && show_threshold <= 1.f)
 319         settings.top_controls_show_threshold = show_threshold;
 320   }
 321
 322   if (cmd->HasSwitch(cc::switches::kTopControlsHideThreshold)) {
 323       std::string top_threshold_str =
 324           cmd->GetSwitchValueASCII(cc::switches::kTopControlsHideThreshold);
 325       double hide_threshold;
 326       if (base::StringToDouble(top_threshold_str, &hide_threshold) &&
 327           hide_threshold >= 0.f && hide_threshold <= 1.f)
 328         settings.top_controls_hide_threshold = hide_threshold;
 329   }
 330
 331   settings.verify_property_trees =
 332       cmd->HasSwitch(cc::switches::kEnablePropertyTreeVerification);
 333   settings.renderer_settings.allow_antialiasing &=
 334       !cmd->HasSwitch(cc::switches::kDisableCompositedAntialiasing);
 335   // The means the renderer compositor has 2 possible modes:
 336   // - Threaded compositing with a scheduler.
 337   // - Single threaded compositing without a scheduler (for layout tests only).
 338   // Using the scheduler in layout tests introduces additional composite steps
 339   // that create flakiness.
 340   settings.single_thread_proxy_scheduler = false;
 341
 342   // These flags should be mirrored by UI versions in ui/compositor/.
 343   settings.initial_debug_state.show_debug_borders =
 344       cmd->HasSwitch(cc::switches::kShowCompositedLayerBorders);
 345   settings.initial_debug_state.show_fps_counter =
 346       cmd->HasSwitch(cc::switches::kShowFPSCounter);
 347   settings.initial_debug_state.show_layer_animation_bounds_rects =
 348       cmd->HasSwitch(cc::switches::kShowLayerAnimationBounds);
 349   settings.initial_debug_state.show_paint_rects =
 350       cmd->HasSwitch(switches::kShowPaintRects);
 351   settings.initial_debug_state.show_property_changed_rects =
 352       cmd->HasSwitch(cc::switches::kShowPropertyChangedRects);
 353   settings.initial_debug_state.show_surface_damage_rects =
 354       cmd->HasSwitch(cc::switches::kShowSurfaceDamageRects);
 355   settings.initial_debug_state.show_screen_space_rects =
 356       cmd->HasSwitch(cc::switches::kShowScreenSpaceRects);
 357   settings.initial_debug_state.show_replica_screen_space_rects =
 358       cmd->HasSwitch(cc::switches::kShowReplicaScreenSpaceRects);
 359
 360   settings.initial_debug_state.SetRecordRenderingStats(
 361       cmd->HasSwitch(cc::switches::kEnableGpuBenchmarking));
 362
 363   if (cmd->HasSwitch(cc::switches::kSlowDownRasterScaleFactor)) {
 364     const int kMinSlowDownScaleFactor = 0;
 365     const int kMaxSlowDownScaleFactor = INT_MAX;
 366     GetSwitchValueAsInt(
 367         *cmd,
 368         cc::switches::kSlowDownRasterScaleFactor,
 369         kMinSlowDownScaleFactor,
 370         kMaxSlowDownScaleFactor,
 371         &settings.initial_debug_state.slow_down_raster_scale_factor);
 372   }
 373
 374   settings.invert_viewport_scroll_order =
 375       cmd->HasSwitch(switches::kInvertViewportScrollOrder);
 376
 377   settings.strict_layer_property_change_checking =
 378       cmd->HasSwitch(cc::switches::kStrictLayerPropertyChangeChecking);
 379
 380 #if defined(OS_ANDROID)
 381   SynchronousCompositorFactory* synchronous_compositor_factory =
 382       SynchronousCompositorFactory::GetInstance();
 383
 384   // We can't use GPU rasterization on low-end devices, because the Ganesh
 385   // cache would consume too much memory.
 386   if (base::SysInfo::IsLowEndDevice())
 387     settings.gpu_rasterization_enabled = false;
 388   settings.using_synchronous_renderer_compositor =
 389       synchronous_compositor_factory;
 390   settings.record_full_layer = widget_->DoesRecordFullLayer();
 391   if (synchronous_compositor_factory) {
 392     // Android WebView uses system scrollbars, so make ours invisible.
 393     settings.scrollbar_animator = cc::LayerTreeSettings::NO_ANIMATOR;
 394     settings.solid_color_scrollbar_color = SK_ColorTRANSPARENT;
 395   } else {
 396     settings.scrollbar_animator = cc::LayerTreeSettings::LINEAR_FADE;
 397     settings.scrollbar_fade_delay_ms = 300;
 398     settings.scrollbar_fade_resize_delay_ms = 2000;
 399     settings.scrollbar_fade_duration_ms = 300;
 400     settings.solid_color_scrollbar_color = SkColorSetARGB(128, 128, 128, 128);
 401   }
 402   settings.renderer_settings.highp_threshold_min = 2048;
 403   // Android WebView handles root layer flings itself.
 404   settings.ignore_root_layer_flings =
 405       synchronous_compositor_factory;
 406   // Memory policy on Android WebView does not depend on whether device is
 407   // low end, so always use default policy.
 408   bool use_low_memory_policy =
 409       base::SysInfo::IsLowEndDevice() && !synchronous_compositor_factory;
 410   // RGBA_4444 textures are only enabled by default for low end devices
 411   // and are disabled for Android WebView as it doesn't support the format.
 412   settings.renderer_settings.use_rgba_4444_textures = use_low_memory_policy;
 413   if (use_low_memory_policy) {
 414     // On low-end we want to be very carefull about killing other
 415     // apps. So initially we use 50% more memory to avoid flickering
 416     // or raster-on-demand.
 417     settings.max_memory_for_prepaint_percentage = 67;
 418   } else {
 419     // On other devices we have increased memory excessively to avoid
 420     // raster-on-demand already, so now we reserve 50% _only_ to avoid
 421     // raster-on-demand, and use 50% of the memory otherwise.
 422     settings.max_memory_for_prepaint_percentage = 50;
 423   }
 424   // Webview does not own the surface so should not clear it.
 425   settings.renderer_settings.should_clear_root_render_pass =
 426       !synchronous_compositor_factory;
 427
 428   // TODO(danakj): Only do this on low end devices.
 429   settings.create_low_res_tiling = true;
 430
 431   settings.use_external_begin_frame_source = true;
 432
 433 #elif !defined(OS_MACOSX)
 434   if (ui::IsOverlayScrollbarEnabled()) {
 435     settings.scrollbar_animator = cc::LayerTreeSettings::THINNING;
 436     settings.solid_color_scrollbar_color = SkColorSetARGB(128, 128, 128, 128);
 437   } else {
 438     settings.scrollbar_animator = cc::LayerTreeSettings::LINEAR_FADE;
 439     settings.solid_color_scrollbar_color = SkColorSetARGB(128, 128, 128, 128);
 440   }
 441   settings.scrollbar_fade_delay_ms = 500;
 442   settings.scrollbar_fade_resize_delay_ms = 500;
 443   settings.scrollbar_fade_duration_ms = 300;
 444 #endif
 445
 446   if (cmd->HasSwitch(switches::kEnableLowResTiling))
 447     settings.create_low_res_tiling = true;
 448   if (cmd->HasSwitch(switches::kDisableLowResTiling))
 449     settings.create_low_res_tiling = false;
 450   if (cmd->HasSwitch(cc::switches::kEnableBeginFrameScheduling))
 451     settings.use_external_begin_frame_source = true;
 452
 453   settings.renderer_settings.use_rgba_4444_textures |=
 454       cmd->HasSwitch(switches::kEnableRGBA4444Textures);
 455   settings.renderer_settings.use_rgba_4444_textures &=
 456       !cmd->HasSwitch(switches::kDisableRGBA4444Textures);
 457
 458   if (widget_->for_oopif()) {
 459     // TODO(simonhong): Apply BeginFrame scheduling for OOPIF.
 460     // See crbug.com/471411.
 461     settings.use_external_begin_frame_source = false;
 462   }
 463
 464   settings.max_staging_buffer_usage_in_bytes = 32 * 1024 * 1024;  // 32MB
 465   // Use 1/4th of staging buffers on low-end devices.
 466   if (base::SysInfo::IsLowEndDevice())
 467     settings.max_staging_buffer_usage_in_bytes /= 4;
 468
 469   scoped_refptr<base::SingleThreadTaskRunner> compositor_thread_task_runner =
 470       compositor_deps_->GetCompositorImplThreadTaskRunner();
 471   scoped_refptr<base::SingleThreadTaskRunner>
 472       main_thread_compositor_task_runner =
 473           compositor_deps_->GetCompositorMainThreadTaskRunner();
 474   cc::SharedBitmapManager* shared_bitmap_manager =
 475       compositor_deps_->GetSharedBitmapManager();
 476   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager =
 477       compositor_deps_->GetGpuMemoryBufferManager();
 478   cc::TaskGraphRunner* task_graph_runner =
 479       compositor_deps_->GetTaskGraphRunner();
 480
 481   scoped_ptr<cc::BeginFrameSource> external_begin_frame_source;
 482   if (settings.use_external_begin_frame_source) {
 483     external_begin_frame_source =
 484         compositor_deps_->CreateExternalBeginFrameSource(widget_->routing_id());
 485   }
 486
 487   cc::LayerTreeHost::InitParams params;
 488   params.client = this;
 489   params.shared_bitmap_manager = shared_bitmap_manager;
 490   params.gpu_memory_buffer_manager = gpu_memory_buffer_manager;
 491   params.settings = &settings;
 492   params.task_graph_runner = task_graph_runner;
 493   params.main_task_runner = main_thread_compositor_task_runner;
 494   params.external_begin_frame_source = external_begin_frame_source.Pass();
 495   if (compositor_thread_task_runner.get()) {
 496     layer_tree_host_ = cc::LayerTreeHost::CreateThreaded(
 497         compositor_thread_task_runner, &params);
 498   } else {
 499     layer_tree_host_ = cc::LayerTreeHost::CreateSingleThreaded(this, &params);
 500   }
 501   DCHECK(layer_tree_host_);
 502 }
 503
 504 RenderWidgetCompositor::~RenderWidgetCompositor() {}
 505
 506 const base::WeakPtr<cc::InputHandler>&
 507 RenderWidgetCompositor::GetInputHandler() {
 508   return layer_tree_host_->GetInputHandler();
 509 }
 510
 511 bool RenderWidgetCompositor::BeginMainFrameRequested() const {
 512   return layer_tree_host_->BeginMainFrameRequested();
 513 }
 514
 515 void RenderWidgetCompositor::SetNeedsDisplayOnAllLayers() {
 516   layer_tree_host_->SetNeedsDisplayOnAllLayers();
 517 }
 518
 519 void RenderWidgetCompositor::SetRasterizeOnlyVisibleContent() {
 520   cc::LayerTreeDebugState current = layer_tree_host_->debug_state();
 521   current.rasterize_only_visible_content = true;
 522   layer_tree_host_->SetDebugState(current);
 523 }
 524
 525 void RenderWidgetCompositor::SetNeedsRedrawRect(gfx::Rect damage_rect) {
 526   layer_tree_host_->SetNeedsRedrawRect(damage_rect);
 527 }
 528
 529 void RenderWidgetCompositor::SetNeedsForcedRedraw() {
 530   layer_tree_host_->SetNextCommitForcesRedraw();
 531   setNeedsAnimate();
 532 }
 533
 534 scoped_ptr<cc::SwapPromiseMonitor>
 535 RenderWidgetCompositor::CreateLatencyInfoSwapPromiseMonitor(
 536     ui::LatencyInfo* latency) {
 537   return scoped_ptr<cc::SwapPromiseMonitor>(
 538       new cc::LatencyInfoSwapPromiseMonitor(
 539           latency, layer_tree_host_.get(), NULL));
 540 }
 541
 542 void RenderWidgetCompositor::QueueSwapPromise(
 543     scoped_ptr<cc::SwapPromise> swap_promise) {
 544   layer_tree_host_->QueueSwapPromise(swap_promise.Pass());
 545 }
 546
 547 int RenderWidgetCompositor::GetSourceFrameNumber() const {
 548   return layer_tree_host_->source_frame_number();
 549 }
 550
 551 void RenderWidgetCompositor::SetNeedsUpdateLayers() {
 552   layer_tree_host_->SetNeedsUpdateLayers();
 553 }
 554
 555 void RenderWidgetCompositor::SetNeedsCommit() {
 556   layer_tree_host_->SetNeedsCommit();
 557 }
 558
 559 void RenderWidgetCompositor::NotifyInputThrottledUntilCommit() {
 560   layer_tree_host_->NotifyInputThrottledUntilCommit();
 561 }
 562
 563 const cc::Layer* RenderWidgetCompositor::GetRootLayer() const {
 564   return layer_tree_host_->root_layer();
 565 }
 566
 567 int RenderWidgetCompositor::ScheduleMicroBenchmark(
 568     const std::string& name,
 569     scoped_ptr<base::Value> value,
 570     const base::Callback<void(scoped_ptr<base::Value>)>& callback) {
 571   return layer_tree_host_->ScheduleMicroBenchmark(name, value.Pass(), callback);
 572 }
 573
 574 bool RenderWidgetCompositor::SendMessageToMicroBenchmark(
 575     int id,
 576     scoped_ptr<base::Value> value) {
 577   return layer_tree_host_->SendMessageToMicroBenchmark(id, value.Pass());
 578 }
 579
 580 void RenderWidgetCompositor::StartCompositor() {
 581   layer_tree_host_->SetLayerTreeHostClientReady();
 582 }
 583
 584 void RenderWidgetCompositor::setRootLayer(const blink::WebLayer& layer) {
 585   layer_tree_host_->SetRootLayer(
 586       static_cast<const cc_blink::WebLayerImpl*>(&layer)->layer());
 587 }
 588
 589 void RenderWidgetCompositor::clearRootLayer() {
 590   layer_tree_host_->SetRootLayer(scoped_refptr<cc::Layer>());
 591 }
 592
 593 void RenderWidgetCompositor::attachCompositorAnimationTimeline(
 594     blink::WebCompositorAnimationTimeline* compositor_timeline) {
 595   DCHECK(compositor_timeline);
 596   DCHECK(layer_tree_host_->animation_host());
 597   layer_tree_host_->animation_host()->AddAnimationTimeline(
 598       static_cast<const cc_blink::WebCompositorAnimationTimelineImpl*>(
 599           compositor_timeline)->animation_timeline());
 600 }
 601
 602 void RenderWidgetCompositor::detachCompositorAnimationTimeline(
 603     blink::WebCompositorAnimationTimeline* compositor_timeline) {
 604   DCHECK(compositor_timeline);
 605   DCHECK(layer_tree_host_->animation_host());
 606   layer_tree_host_->animation_host()->RemoveAnimationTimeline(
 607       static_cast<const cc_blink::WebCompositorAnimationTimelineImpl*>(
 608           compositor_timeline)->animation_timeline());
 609 }
 610
 611 void RenderWidgetCompositor::setViewportSize(
 612     const WebSize&,
 613     const WebSize& device_viewport_size) {
 614   layer_tree_host_->SetViewportSize(device_viewport_size);
 615 }
 616
 617 void RenderWidgetCompositor::setViewportSize(
 618     const WebSize& device_viewport_size) {
 619   layer_tree_host_->SetViewportSize(device_viewport_size);
 620 }
 621
 622 WebFloatPoint RenderWidgetCompositor::adjustEventPointForPinchZoom(
 623     const WebFloatPoint& point) const {
 624   return point;
 625 }
 626
 627 void RenderWidgetCompositor::setDeviceScaleFactor(float device_scale) {
 628   layer_tree_host_->SetDeviceScaleFactor(device_scale);
 629 }
 630
 631 float RenderWidgetCompositor::deviceScaleFactor() const {
 632   return layer_tree_host_->device_scale_factor();
 633 }
 634
 635 void RenderWidgetCompositor::setBackgroundColor(blink::WebColor color) {
 636   layer_tree_host_->set_background_color(color);
 637 }
 638
 639 void RenderWidgetCompositor::setHasTransparentBackground(bool transparent) {
 640   layer_tree_host_->set_has_transparent_background(transparent);
 641 }
 642
 643 void RenderWidgetCompositor::setVisible(bool visible) {
 644   layer_tree_host_->SetVisible(visible);
 645 }
 646
 647 void RenderWidgetCompositor::setPageScaleFactorAndLimits(
 648     float page_scale_factor, float minimum, float maximum) {
 649   layer_tree_host_->SetPageScaleFactorAndLimits(
 650       page_scale_factor, minimum, maximum);
 651 }
 652
 653 void RenderWidgetCompositor::startPageScaleAnimation(
 654     const blink::WebPoint& destination,
 655     bool use_anchor,
 656     float new_page_scale,
 657     double duration_sec) {
 658   base::TimeDelta duration = base::TimeDelta::FromMicroseconds(
 659       duration_sec * base::Time::kMicrosecondsPerSecond);
 660   layer_tree_host_->StartPageScaleAnimation(
 661       gfx::Vector2d(destination.x, destination.y),
 662       use_anchor,
 663       new_page_scale,
 664       duration);
 665 }
 666
 667 void RenderWidgetCompositor::heuristicsForGpuRasterizationUpdated(
 668     bool matches_heuristics) {
 669   layer_tree_host_->SetHasGpuRasterizationTrigger(matches_heuristics);
 670 }
 671
 672 void RenderWidgetCompositor::setNeedsAnimate() {
 673   layer_tree_host_->SetNeedsAnimate();
 674   layer_tree_host_->SetNeedsUpdateLayers();
 675 }
 676
 677 void RenderWidgetCompositor::setNeedsBeginFrame() {
 678   layer_tree_host_->SetNeedsAnimate();
 679 }
 680
 681 void RenderWidgetCompositor::setNeedsCompositorUpdate() {
 682   layer_tree_host_->SetNeedsUpdateLayers();
 683 }
 684
 685 void RenderWidgetCompositor::didStopFlinging() {
 686   layer_tree_host_->DidStopFlinging();
 687 }
 688
 689 void RenderWidgetCompositor::registerForAnimations(blink::WebLayer* layer) {
 690   cc::Layer* cc_layer = static_cast<cc_blink::WebLayerImpl*>(layer)->layer();
 691   cc_layer->RegisterForAnimations(layer_tree_host_->animation_registrar());
 692 }
 693
 694 void RenderWidgetCompositor::registerViewportLayers(
 695     const blink::WebLayer* overscrollElasticityLayer,
 696     const blink::WebLayer* pageScaleLayer,
 697     const blink::WebLayer* innerViewportScrollLayer,
 698     const blink::WebLayer* outerViewportScrollLayer) {
 699   layer_tree_host_->RegisterViewportLayers(
 700       // TODO(bokan): This check can probably be removed now, but it looks
 701       // like overscroll elasticity may still be NULL until PinchViewport
 702       // registers its layers.
 703       // The scroll elasticity layer will only exist when using pinch virtual
 704       // viewports.
 705       overscrollElasticityLayer
 706           ? static_cast<const cc_blink::WebLayerImpl*>(
 707                 overscrollElasticityLayer)->layer()
 708           : NULL,
 709       static_cast<const cc_blink::WebLayerImpl*>(pageScaleLayer)->layer(),
 710       static_cast<const cc_blink::WebLayerImpl*>(innerViewportScrollLayer)
 711           ->layer(),
 712       // TODO(bokan): This check can probably be removed now, but it looks
 713       // like overscroll elasticity may still be NULL until PinchViewport
 714       // registers its layers.
 715       // The outer viewport layer will only exist when using pinch virtual
 716       // viewports.
 717       outerViewportScrollLayer
 718           ? static_cast<const cc_blink::WebLayerImpl*>(outerViewportScrollLayer)
 719                 ->layer()
 720           : NULL);
 721 }
 722
 723 void RenderWidgetCompositor::clearViewportLayers() {
 724   layer_tree_host_->RegisterViewportLayers(
 725       scoped_refptr<cc::Layer>(), scoped_refptr<cc::Layer>(),
 726       scoped_refptr<cc::Layer>(), scoped_refptr<cc::Layer>());
 727 }
 728
 729 void RenderWidgetCompositor::registerSelection(
 730     const blink::WebSelection& selection) {
 731   layer_tree_host_->RegisterSelection(ConvertWebSelection(selection));
 732 }
 733
 734 void RenderWidgetCompositor::clearSelection() {
 735   cc::LayerSelection empty_selection;
 736   layer_tree_host_->RegisterSelection(empty_selection);
 737 }
 738
 739 void CompositeAndReadbackAsyncCallback(
 740     blink::WebCompositeAndReadbackAsyncCallback* callback,
 741     scoped_ptr<cc::CopyOutputResult> result) {
 742   if (result->HasBitmap()) {
 743     scoped_ptr<SkBitmap> result_bitmap = result->TakeBitmap();
 744     callback->didCompositeAndReadback(*result_bitmap);
 745   } else {
 746     callback->didCompositeAndReadback(SkBitmap());
 747   }
 748 }
 749
 750 bool RenderWidgetCompositor::CompositeIsSynchronous() const {
 751   return !compositor_deps_->GetCompositorImplThreadTaskRunner().get() &&
 752          !layer_tree_host_->settings().single_thread_proxy_scheduler;
 753 }
 754
 755 void RenderWidgetCompositor::layoutAndPaintAsync(
 756     blink::WebLayoutAndPaintAsyncCallback* callback) {
 757   DCHECK(!temporary_copy_output_request_ && !layout_and_paint_async_callback_);
 758   layout_and_paint_async_callback_ = callback;
 759
 760   if (CompositeIsSynchronous()) {
 761     base::ThreadTaskRunnerHandle::Get()->PostTask(
 762         FROM_HERE, base::Bind(&RenderWidgetCompositor::LayoutAndUpdateLayers,
 763                               weak_factory_.GetWeakPtr()));
 764   } else {
 765     layer_tree_host_->SetNeedsCommit();
 766   }
 767 }
 768
 769 void RenderWidgetCompositor::LayoutAndUpdateLayers() {
 770   DCHECK(CompositeIsSynchronous());
 771   layer_tree_host_->LayoutAndUpdateLayers();
 772   InvokeLayoutAndPaintCallback();
 773 }
 774
 775 void RenderWidgetCompositor::InvokeLayoutAndPaintCallback() {
 776   if (!layout_and_paint_async_callback_)
 777     return;
 778   layout_and_paint_async_callback_->didLayoutAndPaint();
 779   layout_and_paint_async_callback_ = nullptr;
 780 }
 781
 782 void RenderWidgetCompositor::compositeAndReadbackAsync(
 783     blink::WebCompositeAndReadbackAsyncCallback* callback) {
 784   DCHECK(!temporary_copy_output_request_ && !layout_and_paint_async_callback_);
 785   temporary_copy_output_request_ =
 786       cc::CopyOutputRequest::CreateBitmapRequest(
 787           base::Bind(&CompositeAndReadbackAsyncCallback, callback));
 788
 789   // Force a commit to happen. The temporary copy output request will
 790   // be installed after layout which will happen as a part of the commit, for
 791   // widgets that delay the creation of their output surface.
 792   if (CompositeIsSynchronous()) {
 793     base::ThreadTaskRunnerHandle::Get()->PostTask(
 794         FROM_HERE, base::Bind(&RenderWidgetCompositor::SynchronouslyComposite,
 795                               weak_factory_.GetWeakPtr()));
 796   } else {
 797     layer_tree_host_->SetNeedsCommit();
 798   }
 799 }
 800
 801 void RenderWidgetCompositor::SynchronouslyComposite() {
 802   DCHECK(CompositeIsSynchronous());
 803   layer_tree_host_->Composite(base::TimeTicks::Now());
 804 }
 805
 806 void RenderWidgetCompositor::setDeferCommits(bool defer_commits) {
 807   layer_tree_host_->SetDeferCommits(defer_commits);
 808 }
 809
 810 int RenderWidgetCompositor::layerTreeId() const {
 811   return layer_tree_host_->id();
 812 }
 813
 814 void RenderWidgetCompositor::setShowFPSCounter(bool show) {
 815   cc::LayerTreeDebugState debug_state = layer_tree_host_->debug_state();
 816   debug_state.show_fps_counter = show;
 817   layer_tree_host_->SetDebugState(debug_state);
 818 }
 819
 820 void RenderWidgetCompositor::setShowPaintRects(bool show) {
 821   cc::LayerTreeDebugState debug_state = layer_tree_host_->debug_state();
 822   debug_state.show_paint_rects = show;
 823   layer_tree_host_->SetDebugState(debug_state);
 824 }
 825
 826 void RenderWidgetCompositor::setShowDebugBorders(bool show) {
 827   cc::LayerTreeDebugState debug_state = layer_tree_host_->debug_state();
 828   debug_state.show_debug_borders = show;
 829   layer_tree_host_->SetDebugState(debug_state);
 830 }
 831
 832 void RenderWidgetCompositor::setContinuousPaintingEnabled(bool enabled) {
 833   cc::LayerTreeDebugState debug_state = layer_tree_host_->debug_state();
 834   debug_state.continuous_painting = enabled;
 835   layer_tree_host_->SetDebugState(debug_state);
 836 }
 837
 838 void RenderWidgetCompositor::setShowScrollBottleneckRects(bool show) {
 839   cc::LayerTreeDebugState debug_state = layer_tree_host_->debug_state();
 840   debug_state.show_touch_event_handler_rects = show;
 841   debug_state.show_wheel_event_handler_rects = show;
 842   debug_state.show_non_fast_scrollable_rects = show;
 843   layer_tree_host_->SetDebugState(debug_state);
 844 }
 845
 846 void RenderWidgetCompositor::updateTopControlsState(
 847     WebTopControlsState constraints,
 848     WebTopControlsState current,
 849     bool animate) {
 850   layer_tree_host_->UpdateTopControlsState(ConvertTopControlsState(constraints),
 851                                            ConvertTopControlsState(current),
 852                                            animate);
 853 }
 854
 855 void RenderWidgetCompositor::setTopControlsHeight(float height, bool shrink) {
 856     layer_tree_host_->SetTopControlsHeight(height, shrink);
 857 }
 858
 859 void RenderWidgetCompositor::setTopControlsShownRatio(float ratio) {
 860   layer_tree_host_->SetTopControlsShownRatio(ratio);
 861 }
 862
 863 void RenderWidgetCompositor::setHidePinchScrollbarsNearMinScale(bool hide) {
 864   layer_tree_host_->set_hide_pinch_scrollbars_near_min_scale(hide);
 865 }
 866
 867 void RenderWidgetCompositor::WillBeginMainFrame() {
 868   widget_->WillBeginCompositorFrame();
 869 }
 870
 871 void RenderWidgetCompositor::DidBeginMainFrame() {
 872 }
 873
 874 void RenderWidgetCompositor::BeginMainFrame(const cc::BeginFrameArgs& args) {
 875   double frame_time_sec = (args.frame_time - base::TimeTicks()).InSecondsF();
 876   double deadline_sec = (args.deadline - base::TimeTicks()).InSecondsF();
 877   double interval_sec = args.interval.InSecondsF();
 878   WebBeginFrameArgs web_begin_frame_args =
 879       WebBeginFrameArgs(frame_time_sec, deadline_sec, interval_sec);
 880   compositor_deps_->GetRendererScheduler()->WillBeginFrame(args);
 881   widget_->webwidget()->beginFrame(web_begin_frame_args);
 882 }
 883
 884 void RenderWidgetCompositor::BeginMainFrameNotExpectedSoon() {
 885   compositor_deps_->GetRendererScheduler()->BeginFrameNotExpectedSoon();
 886 }
 887
 888 void RenderWidgetCompositor::Layout() {
 889   widget_->webwidget()->layout();
 890
 891   if (temporary_copy_output_request_) {
 892     // For WebViewImpl, this will always have a root layer.  For other widgets,
 893     // the widget may be closed before servicing this request, so ignore it.
 894     if (cc::Layer* root_layer = layer_tree_host_->root_layer()) {
 895       root_layer->RequestCopyOfOutput(temporary_copy_output_request_.Pass());
 896     } else {
 897       temporary_copy_output_request_->SendEmptyResult();
 898       temporary_copy_output_request_ = nullptr;
 899     }
 900   }
 901 }
 902
 903 void RenderWidgetCompositor::ApplyViewportDeltas(
 904     const gfx::Vector2dF& inner_delta,
 905     const gfx::Vector2dF& outer_delta,
 906     const gfx::Vector2dF& elastic_overscroll_delta,
 907     float page_scale,
 908     float top_controls_delta) {
 909   widget_->webwidget()->applyViewportDeltas(
 910       inner_delta,
 911       outer_delta,
 912       elastic_overscroll_delta,
 913       page_scale,
 914       top_controls_delta);
 915 }
 916
 917 void RenderWidgetCompositor::RequestNewOutputSurface() {
 918   // If the host is closing, then no more compositing is possible.  This
 919   // prevents shutdown races between handling the close message and
 920   // the CreateOutputSurface task.
 921   if (widget_->host_closing())
 922     return;
 923
 924   bool fallback =
 925       num_failed_recreate_attempts_ >= OUTPUT_SURFACE_RETRIES_BEFORE_FALLBACK;
 926   scoped_ptr<cc::OutputSurface> surface(widget_->CreateOutputSurface(fallback));
 927
 928   if (!surface) {
 929     DidFailToInitializeOutputSurface();
 930     return;
 931   }
 932
 933   DCHECK_EQ(surface->capabilities().max_frames_pending, 1);
 934
 935   layer_tree_host_->SetOutputSurface(surface.Pass());
 936 }
 937
 938 void RenderWidgetCompositor::DidInitializeOutputSurface() {
 939   num_failed_recreate_attempts_ = 0;
 940 }
 941
 942 void RenderWidgetCompositor::DidFailToInitializeOutputSurface() {
 943   ++num_failed_recreate_attempts_;
 944   // Tolerate a certain number of recreation failures to work around races
 945   // in the output-surface-lost machinery.
 946   LOG_IF(FATAL, (num_failed_recreate_attempts_ >= MAX_OUTPUT_SURFACE_RETRIES))
 947       << "Failed to create a fallback OutputSurface.";
 948
 949   base::ThreadTaskRunnerHandle::Get()->PostTask(
 950       FROM_HERE, base::Bind(&RenderWidgetCompositor::RequestNewOutputSurface,
 951                             weak_factory_.GetWeakPtr()));
 952 }
 953
 954 void RenderWidgetCompositor::WillCommit() {
 955   InvokeLayoutAndPaintCallback();
 956 }
 957
 958 void RenderWidgetCompositor::DidCommit() {
 959   DCHECK(!temporary_copy_output_request_);
 960   widget_->DidCommitCompositorFrame();
 961   compositor_deps_->GetRendererScheduler()->DidCommitFrameToCompositor();
 962 }
 963
 964 void RenderWidgetCompositor::DidCommitAndDrawFrame() {
 965   widget_->DidCommitAndDrawCompositorFrame();
 966 }
 967
 968 void RenderWidgetCompositor::DidCompleteSwapBuffers() {
 969   widget_->DidCompleteSwapBuffers();
 970   bool threaded = !!compositor_deps_->GetCompositorImplThreadTaskRunner().get();
 971   if (!threaded)
 972     widget_->OnSwapBuffersComplete();
 973 }
 974
 975 void RenderWidgetCompositor::DidCompletePageScaleAnimation() {
 976   widget_->DidCompletePageScaleAnimation();
 977 }
 978
 979 void RenderWidgetCompositor::ScheduleAnimation() {
 980   widget_->scheduleAnimation();
 981 }
 982
 983 void RenderWidgetCompositor::DidPostSwapBuffers() {
 984   widget_->OnSwapBuffersPosted();
 985 }
 986
 987 void RenderWidgetCompositor::DidAbortSwapBuffers() {
 988   widget_->OnSwapBuffersAborted();
 989 }
 990
 991 void RenderWidgetCompositor::RecordFrameTimingEvents(
 992     scoped_ptr<cc::FrameTimingTracker::CompositeTimingSet> composite_events,
 993     scoped_ptr<cc::FrameTimingTracker::MainFrameTimingSet> main_frame_events) {
 994   for (const auto& composite_event : *composite_events ) {
 995     int64_t frameId = composite_event.first;
 996     const std::vector<cc::FrameTimingTracker::CompositeTimingEvent>& events =
 997         composite_event.second;
 998     std::vector<blink::WebFrameTimingEvent> webEvents;
 999     for (size_t i = 0; i < events.size(); ++i) {
1000       webEvents.push_back(blink::WebFrameTimingEvent(
1001           events[i].frame_id,
1002           (events[i].timestamp - base::TimeTicks()).InSecondsF()));
1003     }
1004     widget_->webwidget()->recordFrameTimingEvent(
1005         blink::WebWidget::CompositeEvent, frameId, webEvents);
1006   }
1007   for (const auto& main_frame_event : *main_frame_events ) {
1008     int64_t frameId = main_frame_event.first;
1009     const std::vector<cc::FrameTimingTracker::MainFrameTimingEvent>& events =
1010         main_frame_event.second;
1011     std::vector<blink::WebFrameTimingEvent> webEvents;
1012     for (size_t i = 0; i < events.size(); ++i) {
1013       webEvents.push_back(blink::WebFrameTimingEvent(
1014           events[i].frame_id,
1015           (events[i].timestamp - base::TimeTicks()).InSecondsF(),
1016           (events[i].end_time - base::TimeTicks()).InSecondsF()));
1017     }
1018     widget_->webwidget()->recordFrameTimingEvent(
1019         blink::WebWidget::RenderEvent, frameId, webEvents);
1020   }
1021 }
1022
1023 void RenderWidgetCompositor::RateLimitSharedMainThreadContext() {
1024   cc::ContextProvider* provider =
1025       compositor_deps_->GetSharedMainThreadContextProvider();
1026   // provider can be NULL after the GPU process crashed enough times and we
1027   // don't want to restart it any more (falling back to software).
1028   if (!provider)
1029     return;
1030   provider->ContextGL()->RateLimitOffscreenContextCHROMIUM();
1031 }
1032
1033 void RenderWidgetCompositor::SetSurfaceIdNamespace(
1034     uint32_t surface_id_namespace) {
1035   layer_tree_host_->set_surface_id_namespace(surface_id_namespace);
1036 }
1037
1038 }  // namespace content