cc/tiles/tile.cc

   1 // Copyright 2012 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 "cc/tiles/tile.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/numerics/safe_conversions.h"
  10 #include "base/trace_event/trace_event_argument.h"
  11 #include "cc/base/math_util.h"
  12 #include "cc/debug/traced_value.h"
  13 #include "cc/tiles/tile_manager.h"
  14
  15 namespace cc {
  16
  17 Tile::Tile(TileManager* tile_manager,
  18            const CreateInfo& info,
  19            int layer_id,
  20            int source_frame_number,
  21            int flags)
  22     : tile_manager_(tile_manager),
  23       content_rect_(info.content_rect),
  24       enclosing_layer_rect_(info.enclosing_layer_rect),
  25       contents_scale_(info.contents_scale),
  26       layer_id_(layer_id),
  27       source_frame_number_(source_frame_number),
  28       flags_(flags),
  29       tiling_i_index_(info.tiling_i_index),
  30       tiling_j_index_(info.tiling_j_index),
  31       required_for_activation_(false),
  32       required_for_draw_(false),
  33       id_(tile_manager->GetUniqueTileId()),
  34       invalidated_id_(0),
  35       scheduled_priority_(0) {}
  36
  37 Tile::~Tile() {
  38   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
  39       TRACE_DISABLED_BY_DEFAULT("cc.debug"),
  40       "cc::Tile", this);
  41 }
  42
  43 void Tile::AsValueInto(base::trace_event::TracedValue* value) const {
  44   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
  45       TRACE_DISABLED_BY_DEFAULT("cc.debug"), value, "cc::Tile", this);
  46   value->SetDouble("contents_scale", contents_scale_);
  47
  48   MathUtil::AddToTracedValue("content_rect", content_rect_, value);
  49
  50   value->SetInteger("layer_id", layer_id_);
  51
  52   value->BeginDictionary("draw_info");
  53   draw_info_.AsValueInto(value);
  54   value->EndDictionary();
  55
  56   value->SetBoolean("has_resource", draw_info().has_resource());
  57   value->SetBoolean("is_using_gpu_memory",
  58                     draw_info().has_resource() || HasRasterTask());
  59   value->SetInteger("scheduled_priority", scheduled_priority_);
  60   value->SetBoolean("use_picture_analysis", use_picture_analysis());
  61   value->SetInteger("gpu_memory_usage",
  62                     base::saturated_cast<int>(GPUMemoryUsageInBytes()));
  63 }
  64
  65 size_t Tile::GPUMemoryUsageInBytes() const {
  66   if (draw_info_.resource_) {
  67     // We can use UncheckedSizeInBytes, since the tile size is determined by the
  68     // compositor.
  69     return ResourceUtil::UncheckedSizeInBytes<size_t>(
  70         draw_info_.resource_->size(), draw_info_.resource_->format());
  71   }
  72   return 0;
  73 }
  74
  75 void Tile::Deleter::operator()(Tile* tile) const {
  76   tile->tile_manager_->Release(tile);
  77 }
  78
  79 }  // namespace cc