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 "cc/base/math_util.h"
10 #include "cc/debug/traced_value.h"
11 #include "cc/resources/tile_manager.h"
12 #include "third_party/khronos/GLES2/gl2.h"
13
14 namespace cc {
15
16 Tile::Id Tile::s_next_id_ = 0;
17
Tile(TileManager * tile_manager,PicturePileImpl * picture_pile,const gfx::Size & tile_size,const gfx::Rect & content_rect,const gfx::Rect & opaque_rect,float contents_scale,int layer_id,int source_frame_number,int flags)18 Tile::Tile(TileManager* tile_manager,
19 PicturePileImpl* picture_pile,
20 const gfx::Size& tile_size,
21 const gfx::Rect& content_rect,
22 const gfx::Rect& opaque_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 tile_size_(tile_size),
30 content_rect_(content_rect),
31 contents_scale_(contents_scale),
32 opaque_rect_(opaque_rect),
33 layer_id_(layer_id),
34 source_frame_number_(source_frame_number),
35 flags_(flags),
36 id_(s_next_id_++) {
37 set_picture_pile(picture_pile);
38 }
39
~Tile()40 Tile::~Tile() {
41 TRACE_EVENT_OBJECT_DELETED_WITH_ID(
42 TRACE_DISABLED_BY_DEFAULT("cc.debug"),
43 "cc::Tile", this);
44 }
45
SetPriority(WhichTree tree,const TilePriority & priority)46 void Tile::SetPriority(WhichTree tree, const TilePriority& priority) {
47 if (priority == priority_[tree])
48 return;
49
50 priority_[tree] = priority;
51 tile_manager_->DidChangeTilePriority(this);
52 }
53
MarkRequiredForActivation()54 void Tile::MarkRequiredForActivation() {
55 if (priority_[PENDING_TREE].required_for_activation)
56 return;
57
58 priority_[PENDING_TREE].required_for_activation = true;
59 tile_manager_->DidChangeTilePriority(this);
60 }
61
AsValue() const62 scoped_ptr<base::Value> Tile::AsValue() const {
63 scoped_ptr<base::DictionaryValue> res(new base::DictionaryValue());
64 TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
65 TRACE_DISABLED_BY_DEFAULT("cc.debug"), res.get(), "cc::Tile", this);
66 res->Set("picture_pile",
67 TracedValue::CreateIDRef(picture_pile_.get()).release());
68 res->SetDouble("contents_scale", contents_scale_);
69 res->Set("content_rect", MathUtil::AsValue(content_rect_).release());
70 res->SetInteger("layer_id", layer_id_);
71 res->Set("active_priority", priority_[ACTIVE_TREE].AsValue().release());
72 res->Set("pending_priority", priority_[PENDING_TREE].AsValue().release());
73 res->Set("managed_state", managed_state_.AsValue().release());
74 res->SetBoolean("use_picture_analysis", use_picture_analysis());
75 res->SetInteger("gpu_memory_usage", GPUMemoryUsageInBytes());
76 return res.PassAs<base::Value>();
77 }
78
GPUMemoryUsageInBytes() const79 size_t Tile::GPUMemoryUsageInBytes() const {
80 size_t total_size = 0;
81 for (int mode = 0; mode < NUM_RASTER_MODES; ++mode)
82 total_size += managed_state_.tile_versions[mode].GPUMemoryUsageInBytes();
83 return total_size;
84 }
85
DetermineRasterModeForTree(WhichTree tree) const86 RasterMode Tile::DetermineRasterModeForTree(WhichTree tree) const {
87 return DetermineRasterModeForResolution(priority(tree).resolution);
88 }
89
DetermineOverallRasterMode() const90 RasterMode Tile::DetermineOverallRasterMode() const {
91 return DetermineRasterModeForResolution(managed_state_.resolution);
92 }
93
DetermineRasterModeForResolution(TileResolution resolution) const94 RasterMode Tile::DetermineRasterModeForResolution(
95 TileResolution resolution) const {
96 RasterMode current_mode = managed_state_.raster_mode;
97 RasterMode raster_mode = resolution == LOW_RESOLUTION
98 ? LOW_QUALITY_RASTER_MODE
99 : HIGH_QUALITY_RASTER_MODE;
100 return std::min(raster_mode, current_mode);
101 }
102
103 } // namespace cc
104