tile.cc revision 5f1c94371a64b3196d4be9466099bb892df9b88e 
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/resources/tile.h"
6
7#include <algorithm>
8
9#include "base/debug/trace_event_argument.h"
10#include "cc/base/math_util.h"
11#include "cc/debug/traced_value.h"
12#include "cc/resources/tile_manager.h"
13#include "third_party/khronos/GLES2/gl2.h"
14
15namespace cc {
16
17Tile::Id Tile::s_next_id_ = 0;
18
19Tile::Tile(TileManager* tile_manager,
20           PicturePileImpl* picture_pile,
21           const gfx::Size& tile_size,
22           const gfx::Rect& content_rect,
23           const gfx::Rect& opaque_rect,
24           float contents_scale,
25           int layer_id,
26           int source_frame_number,
27           int flags)
28    : RefCountedManaged<Tile>(tile_manager),
29      tile_manager_(tile_manager),
30      tile_size_(tile_size),
31      content_rect_(content_rect),
32      contents_scale_(contents_scale),
33      opaque_rect_(opaque_rect),
34      layer_id_(layer_id),
35      source_frame_number_(source_frame_number),
36      flags_(flags),
37      id_(s_next_id_++) {
38  set_picture_pile(picture_pile);
39  for (int i = 0; i < NUM_TREES; i++)
40    is_occluded_[i] = false;
41}
42
43Tile::~Tile() {
44  TRACE_EVENT_OBJECT_DELETED_WITH_ID(
45      TRACE_DISABLED_BY_DEFAULT("cc.debug"),
46      "cc::Tile", this);
47}
48
49void Tile::SetPriority(WhichTree tree, const TilePriority& priority) {
50  if (priority == priority_[tree])
51    return;
52
53  priority_[tree] = priority;
54  tile_manager_->DidChangeTilePriority(this);
55}
56
57void Tile::MarkRequiredForActivation() {
58  if (priority_[PENDING_TREE].required_for_activation)
59    return;
60
61  priority_[PENDING_TREE].required_for_activation = true;
62  tile_manager_->DidChangeTilePriority(this);
63}
64
65void Tile::AsValueInto(base::debug::TracedValue* res) const {
66  TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
67      TRACE_DISABLED_BY_DEFAULT("cc.debug"), res, "cc::Tile", this);
68  TracedValue::SetIDRef(picture_pile_.get(), res, "picture_pile");
69  res->SetDouble("contents_scale", contents_scale_);
70
71  res->BeginArray("content_rect");
72  MathUtil::AddToTracedValue(content_rect_, res);
73  res->EndArray();
74
75  res->SetInteger("layer_id", layer_id_);
76
77  res->BeginDictionary("active_priority");
78  priority_[ACTIVE_TREE].AsValueInto(res);
79  res->EndDictionary();
80
81  res->BeginDictionary("pending_priority");
82  priority_[PENDING_TREE].AsValueInto(res);
83  res->EndDictionary();
84
85  res->BeginDictionary("managed_state");
86  managed_state_.AsValueInto(res);
87  res->EndDictionary();
88
89  res->SetBoolean("use_picture_analysis", use_picture_analysis());
90
91  res->SetInteger("gpu_memory_usage", GPUMemoryUsageInBytes());
92}
93
94size_t Tile::GPUMemoryUsageInBytes() const {
95  size_t total_size = 0;
96  for (int mode = 0; mode < NUM_RASTER_MODES; ++mode)
97    total_size += managed_state_.tile_versions[mode].GPUMemoryUsageInBytes();
98  return total_size;
99}
100
101RasterMode Tile::DetermineRasterModeForTree(WhichTree tree) const {
102  return DetermineRasterModeForResolution(priority(tree).resolution);
103}
104
105RasterMode Tile::DetermineOverallRasterMode() const {
106  return DetermineRasterModeForResolution(managed_state_.resolution);
107}
108
109RasterMode Tile::DetermineRasterModeForResolution(
110    TileResolution resolution) const {
111  RasterMode current_mode = managed_state_.raster_mode;
112  RasterMode raster_mode = resolution == LOW_RESOLUTION
113                               ? LOW_QUALITY_RASTER_MODE
114                               : HIGH_QUALITY_RASTER_MODE;
115  return std::min(raster_mode, current_mode);
116}
117
118bool Tile::HasRasterTask() const {
119  for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
120    if (managed_state_.tile_versions[mode].raster_task_)
121      return true;
122  }
123  return false;
124}
125
126}  // namespace cc
127