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::Id Tile::s_next_id_ = 1;
  18
  19 Tile::Tile(TileManager* tile_manager,
  20            const gfx::Size& desired_texture_size,
  21            const gfx::Rect& content_rect,
  22            float contents_scale,
  23            int layer_id,
  24            int source_frame_number,
  25            int flags)
  26     : tile_manager_(tile_manager),
  27       desired_texture_size_(desired_texture_size),
  28       content_rect_(content_rect),
  29       contents_scale_(contents_scale),
  30       layer_id_(layer_id),
  31       source_frame_number_(source_frame_number),
  32       flags_(flags),
  33       tiling_i_index_(-1),
  34       tiling_j_index_(-1),
  35       required_for_activation_(false),
  36       required_for_draw_(false),
  37       id_(s_next_id_++),
  38       invalidated_id_(0),
  39       scheduled_priority_(0) {
  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::AsValueInto(base::trace_event::TracedValue* value) const {
  49   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
  50       TRACE_DISABLED_BY_DEFAULT("cc.debug"), value, "cc::Tile", this);
  51   value->SetDouble("contents_scale", contents_scale_);
  52
  53   MathUtil::AddToTracedValue("content_rect", content_rect_, value);
  54
  55   value->SetInteger("layer_id", layer_id_);
  56
  57   value->BeginDictionary("draw_info");
  58   draw_info_.AsValueInto(value);
  59   value->EndDictionary();
  60
  61   value->SetBoolean("has_resource", draw_info().has_resource());
  62   value->SetBoolean("is_using_gpu_memory",
  63                     draw_info().has_resource() || HasRasterTask());
  64   value->SetInteger("scheduled_priority", scheduled_priority_);
  65   value->SetBoolean("use_picture_analysis", use_picture_analysis());
  66   value->SetInteger("gpu_memory_usage",
  67                     base::saturated_cast<int>(GPUMemoryUsageInBytes()));
  68 }
  69
  70 size_t Tile::GPUMemoryUsageInBytes() const {
  71   if (draw_info_.resource_) {
  72     // We can use UncheckedSizeInBytes, since the tile size is determined by the
  73     // compositor.
  74     return ResourceUtil::UncheckedSizeInBytes<size_t>(
  75         draw_info_.resource_->size(), draw_info_.resource_->format());
  76   }
  77   return 0;
  78 }
  79
  80 void Tile::Deleter::operator()(Tile* tile) const {
  81   TileManager* tile_manager = tile->tile_manager_;
  82   tile_manager->Release(tile);
  83 }
  84
  85 }  // namespace cc