cc: GPU rasterize tiles synchronously in PrepareToDraw.

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 31 matching lines @@
 #include "cc/output/copy_output_request.h"
 #include "cc/output/delegating_renderer.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/output/software_renderer.h"
 #include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/shared_quad_state.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "cc/resources/bitmap_tile_task_worker_pool.h"
 #include "cc/resources/eviction_tile_priority_queue.h"
+#include "cc/resources/gpu_rasterizer.h"
 #include "cc/resources/gpu_tile_task_worker_pool.h"
 #include "cc/resources/memory_history.h"
 #include "cc/resources/one_copy_tile_task_worker_pool.h"
 #include "cc/resources/picture_layer_tiling.h"
 #include "cc/resources/pixel_buffer_tile_task_worker_pool.h"
 #include "cc/resources/prioritized_resource_manager.h"
 #include "cc/resources/raster_tile_priority_queue.h"
 #include "cc/resources/resource_pool.h"
+#include "cc/resources/software_rasterizer.h"
 #include "cc/resources/texture_mailbox_deleter.h"
 #include "cc/resources/tile_task_worker_pool.h"
 #include "cc/resources/ui_resource_bitmap.h"
 #include "cc/resources/zero_copy_tile_task_worker_pool.h"
 #include "cc/scheduler/delay_based_time_source.h"
 #include "cc/trees/damage_tracker.h"
 #include "cc/trees/layer_tree_host.h"
 #include "cc/trees/layer_tree_host_common.h"
 #include "cc/trees/layer_tree_impl.h"
 #include "cc/trees/occlusion_tracker.h"
@@ skipping 305 matching lines @@
 
 void LayerTreeHostImpl::Animate(base::TimeTicks monotonic_time) {
   if (input_handler_client_)
     input_handler_client_->Animate(monotonic_time);
   AnimatePageScale(monotonic_time);
   AnimateLayers(monotonic_time);
   AnimateScrollbars(monotonic_time);
   AnimateTopControls(monotonic_time);
 }
 
+void LayerTreeHostImpl::PrepareTilesBeforeDraw() {
+  if (!tile_manager_)
+    return;
+
+  tile_manager_->PrepareTilesBeforeDraw(global_tile_state_);
+}
+
 void LayerTreeHostImpl::PrepareTiles() {
   if (!tile_manager_)
     return;
   if (!tile_priorities_dirty_)
     return;
 
   tile_priorities_dirty_ = false;
   tile_manager_->PrepareTiles(global_tile_state_);
 
   client_->DidPrepareTiles();
@@ skipping 663 matching lines @@
   // as part of the current frame being drawn.
   if (settings().impl_side_painting)
     tile_manager_->UpdateVisibleTiles();
 
   UMA_HISTOGRAM_CUSTOM_COUNTS(
       "Compositing.NumActiveLayers", active_tree_->NumLayers(), 1, 400, 20);
 
   bool ok = active_tree_->UpdateDrawProperties();
   DCHECK(ok) << "UpdateDrawProperties failed during draw";
 
+  PrepareTilesBeforeDraw();
+
   frame->render_surface_layer_list = &active_tree_->RenderSurfaceLayerList();
   frame->render_passes.clear();
   frame->render_passes_by_id.clear();
   frame->will_draw_layers.clear();
   frame->has_no_damage = false;
 
   if (active_tree_->root_layer()) {
     gfx::Rect device_viewport_damage_rect = viewport_damage_rect_;
     viewport_damage_rect_ = gfx::Rect();
 
@@ skipping 773 matching lines @@
 
   // If we just became visible, we have to ensure that we draw high res tiles,
   // to prevent checkerboard/low res flashes.
   if (visible_)
     SetRequiresHighResToDraw();
   else
     EvictAllUIResources();
 
   // Evict tiles immediately if invisible since this tab may never get another
   // draw or timer tick.
+  // TODO(vmiura): Make sure we do evict tiles in all modes.
   if (!visible_)
     PrepareTiles();
 
   if (!renderer_)
     return;
 
   renderer_->SetVisible(visible);
 }
 
 void LayerTreeHostImpl::SetNeedsAnimate() {
@@ skipping 74 matching lines @@
     pending_tree_->set_needs_update_draw_properties();
   client_->UpdateRendererCapabilitiesOnImplThread();
 }
 
 void LayerTreeHostImpl::CreateAndSetTileManager() {
   DCHECK(!tile_manager_);
   DCHECK(settings_.impl_side_painting);
   DCHECK(output_surface_);
   DCHECK(resource_provider_);
 
-  CreateResourceAndTileTaskWorkerPool(&tile_task_worker_pool_, &resource_pool_,
-                                      &staging_resource_pool_);
+  CreateResourceAndTileTaskWorkerPool(&tile_task_worker_pool_, &rasterizer_,
+                                      &resource_pool_, &staging_resource_pool_);
   DCHECK(tile_task_worker_pool_);
   DCHECK(resource_pool_);
 
   base::SingleThreadTaskRunner* task_runner =
       proxy_->HasImplThread() ? proxy_->ImplThreadTaskRunner()
                               : proxy_->MainThreadTaskRunner();
   DCHECK(task_runner);
   size_t scheduled_raster_task_limit =
       IsSynchronousSingleThreaded() ? std::numeric_limits<size_t>::max()
                                     : settings_.scheduled_raster_task_limit;
-  tile_manager_ = TileManager::Create(
-      this, task_runner, resource_pool_.get(),
-      tile_task_worker_pool_->AsTileTaskRunner(), scheduled_raster_task_limit);
+  tile_manager_ =
+      TileManager::Create(this, task_runner, resource_pool_.get(),
+                          tile_task_worker_pool_->AsTileTaskRunner(),
+                          rasterizer_.get(), scheduled_raster_task_limit);
 
   UpdateTileManagerMemoryPolicy(ActualManagedMemoryPolicy());
 }
 
 void LayerTreeHostImpl::CreateResourceAndTileTaskWorkerPool(
     scoped_ptr<TileTaskWorkerPool>* tile_task_worker_pool,
+    scoped_ptr<Rasterizer>* rasterizer,
     scoped_ptr<ResourcePool>* resource_pool,
     scoped_ptr<ResourcePool>* staging_resource_pool) {
   base::SingleThreadTaskRunner* task_runner =
       proxy_->HasImplThread() ? proxy_->ImplThreadTaskRunner()
                               : proxy_->MainThreadTaskRunner();
   DCHECK(task_runner);
 
   ContextProvider* context_provider = output_surface_->context_provider();
   if (!context_provider) {
     *resource_pool =
         ResourcePool::Create(resource_provider_.get(),
                              GL_TEXTURE_2D,
                              resource_provider_->best_texture_format());
 
     *tile_task_worker_pool = BitmapTileTaskWorkerPool::Create(
         task_runner, TileTaskWorkerPool::GetTaskGraphRunner(),
         resource_provider_.get());
+
+    *rasterizer = SoftwareRasterizer::Create();
     return;
   }
 
   if (use_gpu_rasterization_) {
     *resource_pool =
         ResourcePool::Create(resource_provider_.get(),
                              GL_TEXTURE_2D,
                              resource_provider_->best_texture_format());
 
     *tile_task_worker_pool = GpuTileTaskWorkerPool::Create(
-        task_runner, context_provider, resource_provider_.get(),
-        settings_.use_distance_field_text);
+        task_runner, TileTaskWorkerPool::GetTaskGraphRunner(), context_provider,
+        resource_provider_.get(), settings_.use_distance_field_text);
+
+    *rasterizer =
+        GpuRasterizer::Create(context_provider, resource_provider_.get(),
+                              settings_.use_distance_field_text, false);
+
     return;
   }
 
   if (GetRendererCapabilities().using_image) {
     unsigned image_target = settings_.use_image_texture_target;
     DCHECK_IMPLIES(
         image_target == GL_TEXTURE_RECTANGLE_ARB,
         context_provider->ContextCapabilities().gpu.texture_rectangle);
     DCHECK_IMPLIES(
         image_target == GL_TEXTURE_EXTERNAL_OES,
         context_provider->ContextCapabilities().gpu.egl_image_external);
 
+    *rasterizer = SoftwareRasterizer::Create();
+
     if (settings_.use_zero_copy || IsSynchronousSingleThreaded()) {
       *resource_pool =
           ResourcePool::Create(resource_provider_.get(), image_target,
                                resource_provider_->best_texture_format());
 
       TaskGraphRunner* task_graph_runner;
       if (IsSynchronousSingleThreaded()) {
         DCHECK(!single_thread_synchronous_task_graph_runner_);
         single_thread_synchronous_task_graph_runner_.reset(new TaskGraphRunner);
         task_graph_runner = single_thread_synchronous_task_graph_runner_.get();
@@ skipping 25 matching lines @@
 
   *resource_pool = ResourcePool::Create(
       resource_provider_.get(), GL_TEXTURE_2D,
       resource_provider_->memory_efficient_texture_format());
 
   *tile_task_worker_pool = PixelBufferTileTaskWorkerPool::Create(
       task_runner, TileTaskWorkerPool::GetTaskGraphRunner(), context_provider,
       resource_provider_.get(),
       GetMaxTransferBufferUsageBytes(context_provider->ContextCapabilities(),
                                      settings_.renderer_settings.refresh_rate));
+
+  *rasterizer = SoftwareRasterizer::Create();
 }
 
 void LayerTreeHostImpl::DestroyTileManager() {
   tile_manager_ = nullptr;
   resource_pool_ = nullptr;
   staging_resource_pool_ = nullptr;
   tile_task_worker_pool_ = nullptr;
+  rasterizer_ = nullptr;
   single_thread_synchronous_task_graph_runner_ = nullptr;
 }
 
 bool LayerTreeHostImpl::UsePendingTreeForSync() const {
   // In impl-side painting, synchronize to the pending tree so that it has
   // time to raster before being displayed.
   return settings_.impl_side_painting;
 }
 
 bool LayerTreeHostImpl::IsSynchronousSingleThreaded() const {
@@ skipping 1398 matching lines @@
 }
 
 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   std::vector<PictureLayerImpl*>::iterator it =
       std::find(picture_layers_.begin(), picture_layers_.end(), layer);
   DCHECK(it != picture_layers_.end());
   picture_layers_.erase(it);
 }
 
 }  // namespace cc