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            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       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
  43 Tile::~Tile() {
  44   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
  45       TRACE_DISABLED_BY_DEFAULT("cc.debug"),
  46       "cc::Tile", this);
  47 }
  48
  49 void 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
  57 void 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
  65 void 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
  94 size_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
 101 RasterMode Tile::DetermineRasterModeForTree(WhichTree tree) const {
 102   return DetermineRasterModeForResolution(priority(tree).resolution);
 103 }
 104
 105 RasterMode Tile::DetermineOverallRasterMode() const {
 106   return DetermineRasterModeForResolution(managed_state_.resolution);
 107 }
 108
 109 RasterMode 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
 118 bool 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