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