cc/resources/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/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
  15 namespace cc {
  16
  17 Tile::Id Tile::s_next_id_ = 0;
  18
  19 Tile::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       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       is_shared_(false),
  38       id_(s_next_id_++) {
  39   set_picture_pile(picture_pile);
  40   for (int i = 0; i < NUM_TREES; i++)
  41     is_occluded_[i] = false;
  42 }
  43
  44 Tile::~Tile() {
  45   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
  46       TRACE_DISABLED_BY_DEFAULT("cc.debug"),
  47       "cc::Tile", this);
  48 }
  49
  50 void Tile::SetPriority(WhichTree tree, const TilePriority& priority) {
  51   if (priority == priority_[tree])
  52     return;
  53
  54   priority_[tree] = priority;
  55   tile_manager_->DidChangeTilePriority(this);
  56 }
  57
  58 void Tile::MarkRequiredForActivation() {
  59   if (priority_[PENDING_TREE].required_for_activation)
  60     return;
  61
  62   priority_[PENDING_TREE].required_for_activation = true;
  63   tile_manager_->DidChangeTilePriority(this);
  64 }
  65
  66 void Tile::AsValueInto(base::debug::TracedValue* res) const {
  67   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
  68       TRACE_DISABLED_BY_DEFAULT("cc.debug"), res, "cc::Tile", this);
  69   TracedValue::SetIDRef(picture_pile_.get(), res, "picture_pile");
  70   res->SetDouble("contents_scale", contents_scale_);
  71
  72   res->BeginArray("content_rect");
  73   MathUtil::AddToTracedValue(content_rect_, res);
  74   res->EndArray();
  75
  76   res->SetInteger("layer_id", layer_id_);
  77
  78   res->BeginDictionary("active_priority");
  79   priority_[ACTIVE_TREE].AsValueInto(res);
  80   res->EndDictionary();
  81
  82   res->BeginDictionary("pending_priority");
  83   priority_[PENDING_TREE].AsValueInto(res);
  84   res->EndDictionary();
  85
  86   res->BeginDictionary("managed_state");
  87   managed_state_.AsValueInto(res);
  88   res->EndDictionary();
  89
  90   res->SetBoolean("use_picture_analysis", use_picture_analysis());
  91
  92   res->SetInteger("gpu_memory_usage", GPUMemoryUsageInBytes());
  93 }
  94
  95 size_t Tile::GPUMemoryUsageInBytes() const {
  96   size_t total_size = 0;
  97   for (int mode = 0; mode < NUM_RASTER_MODES; ++mode)
  98     total_size += managed_state_.tile_versions[mode].GPUMemoryUsageInBytes();
  99   return total_size;
 100 }
 101
 102 RasterMode Tile::DetermineRasterModeForTree(WhichTree tree) const {
 103   return DetermineRasterModeForResolution(priority(tree).resolution);
 104 }
 105
 106 RasterMode Tile::DetermineOverallRasterMode() const {
 107   return DetermineRasterModeForResolution(managed_state_.resolution);
 108 }
 109
 110 RasterMode Tile::DetermineRasterModeForResolution(
 111     TileResolution resolution) const {
 112   RasterMode current_mode = managed_state_.raster_mode;
 113   RasterMode raster_mode = resolution == LOW_RESOLUTION
 114                                ? LOW_QUALITY_RASTER_MODE
 115                                : HIGH_QUALITY_RASTER_MODE;
 116   return std::min(raster_mode, current_mode);
 117 }
 118
 119 bool Tile::HasRasterTask() const {
 120   for (int mode = 0; mode < NUM_RASTER_MODES; ++mode) {
 121     if (managed_state_.tile_versions[mode].raster_task_)
 122       return true;
 123   }
 124   return false;
 125 }
 126
 127 }  // namespace cc