cc/resources/tile.h

   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 #ifndef CC_RESOURCES_TILE_H_
   6 #define CC_RESOURCES_TILE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "cc/base/ref_counted_managed.h"
  10 #include "cc/resources/managed_tile_state.h"
  11 #include "cc/resources/raster_source.h"
  12 #include "cc/resources/tile_priority.h"
  13 #include "ui/gfx/geometry/rect.h"
  14 #include "ui/gfx/geometry/size.h"
  15
  16 namespace cc {
  17
  18 class CC_EXPORT Tile : public RefCountedManaged<Tile> {
  19  public:
  20   enum TileRasterFlags { USE_PICTURE_ANALYSIS = 1 << 0 };
  21
  22   typedef uint64 Id;
  23
  24   Id id() const {
  25     return id_;
  26   }
  27
  28   RasterSource* raster_source() { return raster_source_.get(); }
  29
  30   const RasterSource* raster_source() const { return raster_source_.get(); }
  31
  32   const TilePriority& priority(WhichTree tree) const {
  33     return priority_[tree];
  34   }
  35
  36   TilePriority priority_for_tree_priority(TreePriority tree_priority) const {
  37     switch (tree_priority) {
  38       case SMOOTHNESS_TAKES_PRIORITY:
  39         return priority_[ACTIVE_TREE];
  40       case NEW_CONTENT_TAKES_PRIORITY:
  41         return priority_[PENDING_TREE];
  42       case SAME_PRIORITY_FOR_BOTH_TREES:
  43         return combined_priority();
  44       default:
  45         NOTREACHED();
  46         return TilePriority();
  47     }
  48   }
  49
  50   TilePriority combined_priority() const {
  51     return TilePriority(priority_[ACTIVE_TREE],
  52                         priority_[PENDING_TREE]);
  53   }
  54
  55   void SetPriority(WhichTree tree, const TilePriority& priority) {
  56     priority_[tree] = priority;
  57   }
  58
  59   // TODO(vmpstr): Move this to the iterators.
  60   void set_is_occluded(WhichTree tree, bool is_occluded) {
  61     is_occluded_[tree] = is_occluded;
  62   }
  63
  64   bool is_occluded(WhichTree tree) const { return is_occluded_[tree]; }
  65
  66   void set_shared(bool is_shared) { is_shared_ = is_shared; }
  67   bool is_shared() const { return is_shared_; }
  68
  69   bool is_occluded_for_tree_priority(TreePriority tree_priority) const {
  70     switch (tree_priority) {
  71       case SMOOTHNESS_TAKES_PRIORITY:
  72         return is_occluded_[ACTIVE_TREE];
  73       case NEW_CONTENT_TAKES_PRIORITY:
  74         return is_occluded_[PENDING_TREE];
  75       case SAME_PRIORITY_FOR_BOTH_TREES:
  76         return is_occluded_[ACTIVE_TREE] && is_occluded_[PENDING_TREE];
  77       default:
  78         NOTREACHED();
  79         return false;
  80     }
  81   }
  82
  83   // TODO(vmpstr): Move this to the iterators.
  84   bool required_for_activation() const { return required_for_activation_; }
  85   void set_required_for_activation(bool is_required) {
  86     required_for_activation_ = is_required;
  87   }
  88   bool required_for_draw() const { return required_for_draw_; }
  89   void set_required_for_draw(bool is_required) {
  90     required_for_draw_ = is_required;
  91   }
  92
  93   bool use_picture_analysis() const {
  94     return !!(flags_ & USE_PICTURE_ANALYSIS);
  95   }
  96
  97   bool HasResources() const { return managed_state_.draw_info.has_resource(); }
  98   bool NeedsRaster() const {
  99     return managed_state_.draw_info.mode() ==
 100                ManagedTileState::DrawInfo::PICTURE_PILE_MODE ||
 101            !managed_state_.draw_info.IsReadyToDraw();
 102   }
 103
 104   void AsValueInto(base::debug::TracedValue* dict) const;
 105
 106   inline bool IsReadyToDraw() const {
 107     return managed_state_.draw_info.IsReadyToDraw();
 108   }
 109
 110   const ManagedTileState::DrawInfo& draw_info() const {
 111     return managed_state_.draw_info;
 112   }
 113
 114   ManagedTileState::DrawInfo& draw_info() { return managed_state_.draw_info; }
 115
 116   float contents_scale() const { return contents_scale_; }
 117   gfx::Rect content_rect() const { return content_rect_; }
 118
 119   int layer_id() const { return layer_id_; }
 120
 121   int source_frame_number() const { return source_frame_number_; }
 122
 123   void set_raster_source(scoped_refptr<RasterSource> raster_source) {
 124     DCHECK(raster_source->CoversRect(content_rect_, contents_scale_))
 125         << "Recording rect: "
 126         << gfx::ScaleToEnclosingRect(content_rect_, 1.f / contents_scale_)
 127                .ToString();
 128     raster_source_ = raster_source;
 129   }
 130
 131   size_t GPUMemoryUsageInBytes() const;
 132
 133   gfx::Size size() const { return size_; }
 134
 135   void set_tiling_index(int i, int j) {
 136     tiling_i_index_ = i;
 137     tiling_j_index_ = j;
 138   }
 139   int tiling_i_index() const { return tiling_i_index_; }
 140   int tiling_j_index() const { return tiling_j_index_; }
 141
 142  private:
 143   friend class TileManager;
 144   friend class PrioritizedTileSet;
 145   friend class FakeTileManager;
 146   friend class BinComparator;
 147   friend class FakePictureLayerImpl;
 148
 149   // Methods called by by tile manager.
 150   Tile(TileManager* tile_manager,
 151        RasterSource* raster_source,
 152        const gfx::Size& tile_size,
 153        const gfx::Rect& content_rect,
 154        float contents_scale,
 155        int layer_id,
 156        int source_frame_number,
 157        int flags);
 158   ~Tile();
 159
 160   ManagedTileState& managed_state() { return managed_state_; }
 161   const ManagedTileState& managed_state() const { return managed_state_; }
 162
 163   bool HasRasterTask() const;
 164
 165   TileManager* tile_manager_;
 166   scoped_refptr<RasterSource> raster_source_;
 167   gfx::Size size_;
 168   gfx::Rect content_rect_;
 169   float contents_scale_;
 170   bool is_occluded_[NUM_TREES];
 171
 172   TilePriority priority_[NUM_TREES];
 173   ManagedTileState managed_state_;
 174   int layer_id_;
 175   int source_frame_number_;
 176   int flags_;
 177   bool is_shared_;
 178   int tiling_i_index_;
 179   int tiling_j_index_;
 180   bool required_for_activation_;
 181   bool required_for_draw_;
 182
 183   Id id_;
 184   static Id s_next_id_;
 185
 186   DISALLOW_COPY_AND_ASSIGN(Tile);
 187 };
 188
 189 }  // namespace cc
 190
 191 #endif  // CC_RESOURCES_TILE_H_