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