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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/resources/picture_layer_tiling.h" | 5 #include "cc/resources/picture_layer_tiling.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <cmath> | 8 #include <cmath> |
9 #include <limits> | 9 #include <limits> |
10 #include <set> | 10 #include <set> |
11 | 11 |
12 #include "base/debug/trace_event.h" | 12 #include "base/debug/trace_event.h" |
13 #include "base/debug/trace_event_argument.h" | 13 #include "base/debug/trace_event_argument.h" |
14 #include "base/logging.h" | 14 #include "base/logging.h" |
15 #include "cc/base/math_util.h" | 15 #include "cc/base/math_util.h" |
16 #include "cc/resources/tile.h" | 16 #include "cc/resources/tile.h" |
17 #include "cc/resources/tile_priority.h" | 17 #include "cc/resources/tile_priority.h" |
18 #include "ui/gfx/geometry/point_conversions.h" | 18 #include "ui/gfx/geometry/point_conversions.h" |
19 #include "ui/gfx/geometry/rect_conversions.h" | 19 #include "ui/gfx/geometry/rect_conversions.h" |
20 #include "ui/gfx/geometry/safe_integer_conversions.h" | 20 #include "ui/gfx/geometry/safe_integer_conversions.h" |
21 #include "ui/gfx/geometry/size_conversions.h" | 21 #include "ui/gfx/geometry/size_conversions.h" |
22 | 22 |
23 namespace cc { | 23 namespace cc { |
24 namespace { | 24 namespace { |
25 | 25 |
26 const float kSoonBorderDistanceInScreenPixels = 312.f; | 26 const float kSoonBorderDistanceInScreenPixels = 312.f; |
27 | 27 |
28 class TileEvictionOrder { | |
29 public: | |
30 explicit TileEvictionOrder(TreePriority tree_priority) | |
31 : tree_priority_(tree_priority) {} | |
32 ~TileEvictionOrder() {} | |
33 | |
34 bool operator()(const Tile* a, const Tile* b) { | |
35 const TilePriority& a_priority = | |
36 a->priority_for_tree_priority(tree_priority_); | |
37 const TilePriority& b_priority = | |
38 b->priority_for_tree_priority(tree_priority_); | |
39 | |
40 DCHECK(a_priority.priority_bin == b_priority.priority_bin); | |
41 DCHECK(a->required_for_activation() == b->required_for_activation()); | |
42 | |
43 // Or if a is occluded and b is unoccluded. | |
44 bool a_is_occluded = a->is_occluded_for_tree_priority(tree_priority_); | |
45 bool b_is_occluded = b->is_occluded_for_tree_priority(tree_priority_); | |
46 if (a_is_occluded != b_is_occluded) | |
47 return a_is_occluded; | |
48 | |
49 // Or if a is farther away from visible. | |
50 return a_priority.distance_to_visible > b_priority.distance_to_visible; | |
51 } | |
52 | |
53 private: | |
54 TreePriority tree_priority_; | |
55 }; | |
56 | |
57 } // namespace | 28 } // namespace |
58 | 29 |
59 scoped_ptr<PictureLayerTiling> PictureLayerTiling::Create( | 30 scoped_ptr<PictureLayerTiling> PictureLayerTiling::Create( |
60 float contents_scale, | 31 float contents_scale, |
61 const gfx::Size& layer_bounds, | 32 const gfx::Size& layer_bounds, |
62 PictureLayerTilingClient* client) { | 33 PictureLayerTilingClient* client) { |
63 return make_scoped_ptr(new PictureLayerTiling(contents_scale, | 34 return make_scoped_ptr(new PictureLayerTiling(contents_scale, |
64 layer_bounds, | 35 layer_bounds, |
65 client)); | 36 client)); |
66 } | 37 } |
67 | 38 |
68 PictureLayerTiling::PictureLayerTiling(float contents_scale, | 39 PictureLayerTiling::PictureLayerTiling(float contents_scale, |
69 const gfx::Size& layer_bounds, | 40 const gfx::Size& layer_bounds, |
70 PictureLayerTilingClient* client) | 41 PictureLayerTilingClient* client) |
71 : contents_scale_(contents_scale), | 42 : contents_scale_(contents_scale), |
72 layer_bounds_(layer_bounds), | 43 layer_bounds_(layer_bounds), |
73 resolution_(NON_IDEAL_RESOLUTION), | 44 resolution_(NON_IDEAL_RESOLUTION), |
74 client_(client), | 45 client_(client), |
75 tiling_data_(gfx::Size(), gfx::Size(), kBorderTexels), | 46 tiling_data_(gfx::Size(), gfx::Size(), kBorderTexels), |
76 last_impl_frame_time_in_seconds_(0.0), | 47 last_impl_frame_time_in_seconds_(0.0), |
77 content_to_screen_scale_(0.f), | 48 content_to_screen_scale_(0.f), |
78 can_require_tiles_for_activation_(false), | 49 can_require_tiles_for_activation_(false), |
79 has_visible_rect_tiles_(false), | 50 has_visible_rect_tiles_(false), |
80 has_skewport_rect_tiles_(false), | 51 has_skewport_rect_tiles_(false), |
81 has_soon_border_rect_tiles_(false), | 52 has_soon_border_rect_tiles_(false), |
82 has_eventually_rect_tiles_(false), | 53 has_eventually_rect_tiles_(false) { |
83 eviction_tiles_cache_valid_(false), | |
84 eviction_cache_tree_priority_(SAME_PRIORITY_FOR_BOTH_TREES) { | |
85 gfx::Size content_bounds = | 54 gfx::Size content_bounds = |
86 gfx::ToCeiledSize(gfx::ScaleSize(layer_bounds, contents_scale)); | 55 gfx::ToCeiledSize(gfx::ScaleSize(layer_bounds, contents_scale)); |
87 gfx::Size tile_size = client_->CalculateTileSize(content_bounds); | 56 gfx::Size tile_size = client_->CalculateTileSize(content_bounds); |
88 if (tile_size.IsEmpty()) { | 57 if (tile_size.IsEmpty()) { |
89 layer_bounds_ = gfx::Size(); | 58 layer_bounds_ = gfx::Size(); |
90 content_bounds = gfx::Size(); | 59 content_bounds = gfx::Size(); |
91 } | 60 } |
92 | 61 |
93 DCHECK(!gfx::ToFlooredSize( | 62 DCHECK(!gfx::ToFlooredSize( |
94 gfx::ScaleSize(layer_bounds, contents_scale)).IsEmpty()) << | 63 gfx::ScaleSize(layer_bounds, contents_scale)).IsEmpty()) << |
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138 } | 107 } |
139 } | 108 } |
140 | 109 |
141 // Create a new tile because our twin didn't have a valid one. | 110 // Create a new tile because our twin didn't have a valid one. |
142 scoped_refptr<Tile> tile = client_->CreateTile(this, tile_rect); | 111 scoped_refptr<Tile> tile = client_->CreateTile(this, tile_rect); |
143 if (tile.get()) { | 112 if (tile.get()) { |
144 DCHECK(!tile->is_shared()); | 113 DCHECK(!tile->is_shared()); |
145 tile->set_tiling_index(i, j); | 114 tile->set_tiling_index(i, j); |
146 tiles_[key] = tile; | 115 tiles_[key] = tile; |
147 } | 116 } |
148 eviction_tiles_cache_valid_ = false; | |
149 return tile.get(); | 117 return tile.get(); |
150 } | 118 } |
151 | 119 |
152 void PictureLayerTiling::CreateMissingTilesInLiveTilesRect() { | 120 void PictureLayerTiling::CreateMissingTilesInLiveTilesRect() { |
153 const PictureLayerTiling* twin_tiling = | 121 const PictureLayerTiling* twin_tiling = |
154 client_->GetPendingOrActiveTwinTiling(this); | 122 client_->GetPendingOrActiveTwinTiling(this); |
155 bool include_borders = false; | 123 bool include_borders = false; |
156 for (TilingData::Iterator iter( | 124 for (TilingData::Iterator iter( |
157 &tiling_data_, live_tiles_rect_, include_borders); | 125 &tiling_data_, live_tiles_rect_, include_borders); |
158 iter; | 126 iter; |
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461 } | 429 } |
462 | 430 |
463 bool PictureLayerTiling::RemoveTileAt(int i, | 431 bool PictureLayerTiling::RemoveTileAt(int i, |
464 int j, | 432 int j, |
465 PictureLayerTiling* recycled_twin) { | 433 PictureLayerTiling* recycled_twin) { |
466 TileMap::iterator found = tiles_.find(TileMapKey(i, j)); | 434 TileMap::iterator found = tiles_.find(TileMapKey(i, j)); |
467 if (found == tiles_.end()) | 435 if (found == tiles_.end()) |
468 return false; | 436 return false; |
469 found->second->set_shared(false); | 437 found->second->set_shared(false); |
470 tiles_.erase(found); | 438 tiles_.erase(found); |
471 eviction_tiles_cache_valid_ = false; | |
472 if (recycled_twin) { | 439 if (recycled_twin) { |
473 // Recycled twin does not also have a recycled twin, so pass NULL. | 440 // Recycled twin does not also have a recycled twin, so pass NULL. |
474 recycled_twin->RemoveTileAt(i, j, NULL); | 441 recycled_twin->RemoveTileAt(i, j, NULL); |
475 } | 442 } |
476 return true; | 443 return true; |
477 } | 444 } |
478 | 445 |
479 void PictureLayerTiling::Reset() { | 446 void PictureLayerTiling::Reset() { |
480 live_tiles_rect_ = gfx::Rect(); | 447 live_tiles_rect_ = gfx::Rect(); |
481 PictureLayerTiling* recycled_twin = client_->GetRecycledTwinTiling(this); | 448 PictureLayerTiling* recycled_twin = client_->GetRecycledTwinTiling(this); |
482 for (TileMap::const_iterator it = tiles_.begin(); it != tiles_.end(); ++it) { | 449 for (TileMap::const_iterator it = tiles_.begin(); it != tiles_.end(); ++it) { |
483 it->second->set_shared(false); | 450 it->second->set_shared(false); |
484 if (recycled_twin) | 451 if (recycled_twin) |
485 recycled_twin->RemoveTileAt(it->first.first, it->first.second, NULL); | 452 recycled_twin->RemoveTileAt(it->first.first, it->first.second, NULL); |
486 } | 453 } |
487 tiles_.clear(); | 454 tiles_.clear(); |
488 eviction_tiles_cache_valid_ = false; | |
489 } | 455 } |
490 | 456 |
491 gfx::Rect PictureLayerTiling::ComputeSkewport( | 457 gfx::Rect PictureLayerTiling::ComputeSkewport( |
492 double current_frame_time_in_seconds, | 458 double current_frame_time_in_seconds, |
493 const gfx::Rect& visible_rect_in_content_space) const { | 459 const gfx::Rect& visible_rect_in_content_space) const { |
494 gfx::Rect skewport = visible_rect_in_content_space; | 460 gfx::Rect skewport = visible_rect_in_content_space; |
495 if (last_impl_frame_time_in_seconds_ == 0.0) | 461 if (last_impl_frame_time_in_seconds_ == 0.0) |
496 return skewport; | 462 return skewport; |
497 | 463 |
498 double time_delta = | 464 double time_delta = |
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587 float border = kSoonBorderDistanceInScreenPixels / content_to_screen_scale_; | 553 float border = kSoonBorderDistanceInScreenPixels / content_to_screen_scale_; |
588 soon_border_rect.Inset(-border, -border, -border, -border); | 554 soon_border_rect.Inset(-border, -border, -border, -border); |
589 | 555 |
590 // Update the tiling state. | 556 // Update the tiling state. |
591 SetLiveTilesRect(eventually_rect); | 557 SetLiveTilesRect(eventually_rect); |
592 | 558 |
593 last_impl_frame_time_in_seconds_ = current_frame_time_in_seconds; | 559 last_impl_frame_time_in_seconds_ = current_frame_time_in_seconds; |
594 last_viewport_in_layer_space_ = viewport_in_layer_space; | 560 last_viewport_in_layer_space_ = viewport_in_layer_space; |
595 last_visible_rect_in_content_space_ = visible_rect_in_content_space; | 561 last_visible_rect_in_content_space_ = visible_rect_in_content_space; |
596 | 562 |
597 eviction_tiles_cache_valid_ = false; | |
598 | |
599 current_visible_rect_ = visible_rect_in_content_space; | 563 current_visible_rect_ = visible_rect_in_content_space; |
600 current_skewport_rect_ = skewport; | 564 current_skewport_rect_ = skewport; |
601 current_soon_border_rect_ = soon_border_rect; | 565 current_soon_border_rect_ = soon_border_rect; |
602 current_eventually_rect_ = eventually_rect; | 566 current_eventually_rect_ = eventually_rect; |
603 current_occlusion_in_layer_space_ = occlusion_in_layer_space; | 567 current_occlusion_in_layer_space_ = occlusion_in_layer_space; |
604 | 568 |
605 // Update has_*_tiles state. | 569 // Update has_*_tiles state. |
606 gfx::Rect tiling_rect(tiling_size()); | 570 gfx::Rect tiling_rect(tiling_size()); |
607 | 571 |
608 has_visible_rect_tiles_ = tiling_rect.Intersects(current_visible_rect_); | 572 has_visible_rect_tiles_ = tiling_rect.Intersects(current_visible_rect_); |
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991 if (delta < event.distance) | 955 if (delta < event.distance) |
992 break; | 956 break; |
993 } | 957 } |
994 | 958 |
995 gfx::Rect result(origin_x, origin_y, width, height); | 959 gfx::Rect result(origin_x, origin_y, width, height); |
996 if (cache) | 960 if (cache) |
997 cache->previous_result = result; | 961 cache->previous_result = result; |
998 return result; | 962 return result; |
999 } | 963 } |
1000 | 964 |
1001 void PictureLayerTiling::UpdateEvictionCacheIfNeeded( | |
1002 TreePriority tree_priority) { | |
1003 if (eviction_tiles_cache_valid_ && | |
1004 eviction_cache_tree_priority_ == tree_priority) | |
1005 return; | |
1006 | |
1007 eviction_tiles_now_.clear(); | |
1008 eviction_tiles_now_and_required_for_activation_.clear(); | |
1009 eviction_tiles_soon_.clear(); | |
1010 eviction_tiles_soon_and_required_for_activation_.clear(); | |
1011 eviction_tiles_eventually_.clear(); | |
1012 eviction_tiles_eventually_and_required_for_activation_.clear(); | |
1013 | |
1014 for (TileMap::iterator it = tiles_.begin(); it != tiles_.end(); ++it) { | |
1015 Tile* tile = it->second.get(); | |
1016 UpdateTileAndTwinPriority(tile); | |
1017 const TilePriority& priority = | |
1018 tile->priority_for_tree_priority(tree_priority); | |
1019 switch (priority.priority_bin) { | |
1020 case TilePriority::EVENTUALLY: | |
1021 if (tile->required_for_activation()) | |
1022 eviction_tiles_eventually_and_required_for_activation_.push_back( | |
1023 tile); | |
1024 else | |
1025 eviction_tiles_eventually_.push_back(tile); | |
1026 break; | |
1027 case TilePriority::SOON: | |
1028 if (tile->required_for_activation()) | |
1029 eviction_tiles_soon_and_required_for_activation_.push_back(tile); | |
1030 else | |
1031 eviction_tiles_soon_.push_back(tile); | |
1032 break; | |
1033 case TilePriority::NOW: | |
1034 if (tile->required_for_activation()) | |
1035 eviction_tiles_now_and_required_for_activation_.push_back(tile); | |
1036 else | |
1037 eviction_tiles_now_.push_back(tile); | |
1038 break; | |
1039 } | |
1040 } | |
1041 | |
1042 // TODO(vmpstr): Do this lazily. One option is to have a "sorted" flag that | |
1043 // can be updated for each of the queues. | |
1044 TileEvictionOrder sort_order(tree_priority); | |
1045 std::sort(eviction_tiles_now_.begin(), eviction_tiles_now_.end(), sort_order); | |
1046 std::sort(eviction_tiles_now_and_required_for_activation_.begin(), | |
1047 eviction_tiles_now_and_required_for_activation_.end(), | |
1048 sort_order); | |
1049 std::sort( | |
1050 eviction_tiles_soon_.begin(), eviction_tiles_soon_.end(), sort_order); | |
1051 std::sort(eviction_tiles_soon_and_required_for_activation_.begin(), | |
1052 eviction_tiles_soon_and_required_for_activation_.end(), | |
1053 sort_order); | |
1054 std::sort(eviction_tiles_eventually_.begin(), | |
1055 eviction_tiles_eventually_.end(), | |
1056 sort_order); | |
1057 std::sort(eviction_tiles_eventually_and_required_for_activation_.begin(), | |
1058 eviction_tiles_eventually_and_required_for_activation_.end(), | |
1059 sort_order); | |
1060 | |
1061 eviction_tiles_cache_valid_ = true; | |
1062 eviction_cache_tree_priority_ = tree_priority; | |
1063 } | |
1064 | |
1065 const std::vector<Tile*>* PictureLayerTiling::GetEvictionTiles( | |
1066 TreePriority tree_priority, | |
1067 EvictionCategory category) { | |
1068 UpdateEvictionCacheIfNeeded(tree_priority); | |
1069 switch (category) { | |
1070 case EVENTUALLY: | |
1071 return &eviction_tiles_eventually_; | |
1072 case EVENTUALLY_AND_REQUIRED_FOR_ACTIVATION: | |
1073 return &eviction_tiles_eventually_and_required_for_activation_; | |
1074 case SOON: | |
1075 return &eviction_tiles_soon_; | |
1076 case SOON_AND_REQUIRED_FOR_ACTIVATION: | |
1077 return &eviction_tiles_soon_and_required_for_activation_; | |
1078 case NOW: | |
1079 return &eviction_tiles_now_; | |
1080 case NOW_AND_REQUIRED_FOR_ACTIVATION: | |
1081 return &eviction_tiles_now_and_required_for_activation_; | |
1082 } | |
1083 NOTREACHED(); | |
1084 return &eviction_tiles_eventually_; | |
1085 } | |
1086 | |
1087 PictureLayerTiling::TilingRasterTileIterator::TilingRasterTileIterator() | 965 PictureLayerTiling::TilingRasterTileIterator::TilingRasterTileIterator() |
1088 : tiling_(NULL), current_tile_(NULL) {} | 966 : tiling_(NULL), current_tile_(NULL) {} |
1089 | 967 |
1090 PictureLayerTiling::TilingRasterTileIterator::TilingRasterTileIterator( | 968 PictureLayerTiling::TilingRasterTileIterator::TilingRasterTileIterator( |
1091 PictureLayerTiling* tiling) | 969 PictureLayerTiling* tiling) |
1092 : tiling_(tiling), phase_(VISIBLE_RECT), current_tile_(NULL) { | 970 : tiling_(tiling), phase_(VISIBLE_RECT), current_tile_(NULL) { |
1093 if (!tiling_->has_visible_rect_tiles_) { | 971 if (!tiling_->has_visible_rect_tiles_) { |
1094 AdvancePhase(); | 972 AdvancePhase(); |
1095 return; | 973 return; |
1096 } | 974 } |
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1210 } | 1088 } |
1211 current_tile_ = tiling_->TileAt(next_index.first, next_index.second); | 1089 current_tile_ = tiling_->TileAt(next_index.first, next_index.second); |
1212 } | 1090 } |
1213 | 1091 |
1214 if (current_tile_) | 1092 if (current_tile_) |
1215 tiling_->UpdateTileAndTwinPriority(current_tile_); | 1093 tiling_->UpdateTileAndTwinPriority(current_tile_); |
1216 return *this; | 1094 return *this; |
1217 } | 1095 } |
1218 | 1096 |
1219 PictureLayerTiling::TilingEvictionTileIterator::TilingEvictionTileIterator() | 1097 PictureLayerTiling::TilingEvictionTileIterator::TilingEvictionTileIterator() |
1220 : eviction_tiles_(NULL), current_eviction_tiles_index_(0u) { | 1098 : tiling_(nullptr), |
1099 tree_priority_(SAME_PRIORITY_FOR_BOTH_TREES), | |
1100 eviction_category_(EVENTUALLY), | |
1101 processing_soon_border_rect_(false), | |
1102 skip_shared_out_of_order_tiles_(false), | |
1103 unoccluded_now_tiles_index_(0u), | |
1104 current_tile_(nullptr) { | |
1221 } | 1105 } |
1222 | 1106 |
1223 PictureLayerTiling::TilingEvictionTileIterator::TilingEvictionTileIterator( | 1107 PictureLayerTiling::TilingEvictionTileIterator::TilingEvictionTileIterator( |
1224 PictureLayerTiling* tiling, | 1108 PictureLayerTiling* tiling, |
1225 TreePriority tree_priority, | 1109 TreePriority tree_priority, |
1226 EvictionCategory category) | 1110 EvictionCategory category, |
1227 : eviction_tiles_(tiling->GetEvictionTiles(tree_priority, category)), | 1111 bool skip_shared_out_of_order_tiles) |
1228 // Note: initializing to "0 - 1" works as overflow is well defined for | 1112 : tiling_(tiling), |
1229 // unsigned integers. | 1113 tree_priority_(tree_priority), |
1230 current_eviction_tiles_index_(static_cast<size_t>(0) - 1) { | 1114 eviction_category_(category), |
1231 DCHECK(eviction_tiles_); | 1115 processing_soon_border_rect_(true), |
1232 ++(*this); | 1116 skip_shared_out_of_order_tiles_(skip_shared_out_of_order_tiles), |
1117 unoccluded_now_tiles_index_(0u), | |
1118 current_tile_(nullptr) { | |
1119 TilePriority::PriorityBin max_tile_priority_bin = | |
1120 tiling_->client_->GetMaxTilePriorityBin(); | |
vmpstr
2014/11/19 16:47:58
I'm not sure if this check matters here. The order
USE eero AT chromium.org
2014/11/20 14:54:38
[...]
| |
1121 switch (eviction_category_) { | |
1122 case EVENTUALLY: | |
1123 case EVENTUALLY_AND_REQUIRED_FOR_ACTIVATION: | |
1124 if (tiling_->has_eventually_rect_tiles_) { | |
1125 if (max_tile_priority_bin < TilePriority::EVENTUALLY) | |
1126 spiral_iterator_ = TilingData::ReverseSpiralDifferenceIterator( | |
1127 &tiling_->tiling_data_, tiling_->current_eventually_rect_, | |
1128 tiling_->current_skewport_rect_, | |
1129 tiling_->current_soon_border_rect_); | |
1130 else | |
1131 spiral_iterator_ = TilingData::ReverseSpiralDifferenceIterator( | |
1132 &tiling_->tiling_data_, tiling_->current_eventually_rect_, | |
1133 gfx::Rect(), gfx::Rect()); | |
1134 AdvanceEventually(); | |
1135 } | |
1136 break; | |
1137 case SOON: | |
1138 case SOON_AND_REQUIRED_FOR_ACTIVATION: | |
vmpstr
2014/11/19 16:47:58
Doing both SOON and SOON_AND_RFA would return doub
USE eero AT chromium.org
2014/11/20 14:54:38
No. SOON returns only tiles which are not required
| |
1139 if (max_tile_priority_bin <= TilePriority::SOON && | |
1140 (tiling_->has_skewport_rect_tiles_ || | |
1141 tiling_->has_soon_border_rect_tiles_)) { | |
1142 if (tiling_->has_soon_border_rect_tiles_) | |
1143 spiral_iterator_ = TilingData::ReverseSpiralDifferenceIterator( | |
1144 &tiling_->tiling_data_, tiling_->current_soon_border_rect_, | |
1145 tiling_->current_skewport_rect_, tiling_->current_visible_rect_); | |
1146 AdvanceSoon(); | |
1147 } | |
1148 break; | |
1149 case NOW: | |
1150 case NOW_AND_REQUIRED_FOR_ACTIVATION: | |
1151 if (max_tile_priority_bin <= TilePriority::NOW && | |
1152 tiling_->has_visible_rect_tiles_) { | |
1153 visible_iterator_ = TilingData::Iterator(&tiling_->tiling_data_, | |
1154 tiling_->current_visible_rect_, | |
1155 false /* include_borders */); | |
1156 AdvanceNow(); | |
1157 } | |
1158 break; | |
1159 } | |
1233 } | 1160 } |
1234 | 1161 |
1235 PictureLayerTiling::TilingEvictionTileIterator::~TilingEvictionTileIterator() { | 1162 PictureLayerTiling::TilingEvictionTileIterator::~TilingEvictionTileIterator() { |
1236 } | 1163 } |
1237 | 1164 |
1165 void PictureLayerTiling::TilingEvictionTileIterator::AdvanceEventually() { | |
1166 bool required_for_activation = | |
1167 eviction_category_ == EVENTUALLY_AND_REQUIRED_FOR_ACTIVATION; | |
1168 | |
1169 while (spiral_iterator_) { | |
1170 std::pair<int, int> next_index = spiral_iterator_.index(); | |
1171 Tile* tile = tiling_->TileAt(next_index.first, next_index.second); | |
1172 ++spiral_iterator_; | |
1173 if (!tile || !tile->HasResources()) | |
1174 continue; | |
1175 if (PreparseTileUnlessReturningShouldBeDoneByTwin(tile) && | |
1176 tile->required_for_activation() == required_for_activation) { | |
1177 current_tile_ = tile; | |
1178 return; | |
1179 } | |
1180 } | |
1181 | |
1182 current_tile_ = nullptr; | |
1183 } | |
1184 | |
1185 void PictureLayerTiling::TilingEvictionTileIterator::AdvanceSoon() { | |
1186 bool required_for_activation = | |
1187 eviction_category_ == SOON_AND_REQUIRED_FOR_ACTIVATION; | |
1188 | |
1189 for (;;) { | |
1190 if (!spiral_iterator_) { | |
1191 if (!processing_soon_border_rect_) | |
1192 break; | |
1193 // Max tile priority bin should never be SOON so there is no need to | |
1194 // handle that case (to return visible tiles as SOON tiles). | |
1195 DCHECK_LT(tiling_->client_->GetMaxTilePriorityBin(), TilePriority::SOON); | |
1196 processing_soon_border_rect_ = false; | |
1197 if (tiling_->has_skewport_rect_tiles_) { | |
1198 spiral_iterator_ = TilingData::ReverseSpiralDifferenceIterator( | |
1199 &tiling_->tiling_data_, tiling_->current_skewport_rect_, | |
1200 tiling_->current_visible_rect_, tiling_->current_visible_rect_); | |
1201 } | |
1202 if (!spiral_iterator_) | |
1203 break; | |
1204 } | |
1205 std::pair<int, int> next_index = spiral_iterator_.index(); | |
1206 Tile* tile = tiling_->TileAt(next_index.first, next_index.second); | |
1207 ++spiral_iterator_; | |
1208 if (!tile || !tile->HasResources()) | |
1209 continue; | |
1210 if (PreparseTileUnlessReturningShouldBeDoneByTwin(tile) && | |
1211 tile->required_for_activation() == required_for_activation) { | |
1212 current_tile_ = tile; | |
1213 return; | |
1214 } | |
1215 } | |
1216 | |
1217 current_tile_ = nullptr; | |
1218 } | |
1219 | |
1220 void PictureLayerTiling::TilingEvictionTileIterator::AdvanceNow() { | |
1221 bool required_for_activation = | |
1222 eviction_category_ == NOW_AND_REQUIRED_FOR_ACTIVATION; | |
1223 | |
1224 if (visible_iterator_) { | |
1225 WhichTree tree = tiling_->client_->GetTree(); | |
1226 bool skip_all_shared_tiles = | |
1227 skip_shared_out_of_order_tiles_ && | |
1228 tree_priority_ == (tree == ACTIVE_TREE ? NEW_CONTENT_TAKES_PRIORITY | |
1229 : SMOOTHNESS_TAKES_PRIORITY); | |
1230 do { | |
1231 std::pair<int, int> next_index = visible_iterator_.index(); | |
1232 Tile* tile = tiling_->TileAt(next_index.first, next_index.second); | |
1233 ++visible_iterator_; | |
1234 if (!tile || !tile->HasResources()) | |
1235 continue; | |
1236 if (skip_all_shared_tiles && tile->is_shared()) | |
1237 continue; | |
1238 if (tree == PENDING_TREE && | |
1239 tiling_->IsTileRequiredForActivationIfVisible(tile) != | |
1240 required_for_activation) | |
1241 continue; | |
1242 if (!tiling_->IsTileOccluded(tile)) { | |
1243 unoccluded_now_tiles_.push_back(tile); | |
1244 continue; | |
1245 } | |
1246 if (PreparseTileUnlessReturningShouldBeDoneByTwin(tile) && | |
1247 tile->required_for_activation() == required_for_activation) { | |
1248 current_tile_ = tile; | |
1249 return; | |
1250 } | |
1251 } while (visible_iterator_); | |
1252 } | |
1253 | |
1254 while (unoccluded_now_tiles_index_ < unoccluded_now_tiles_.size()) { | |
1255 Tile* tile = unoccluded_now_tiles_[unoccluded_now_tiles_index_]; | |
1256 ++unoccluded_now_tiles_index_; | |
1257 DCHECK(tile); | |
1258 if (!tile->HasResources()) | |
1259 continue; | |
1260 if (PreparseTileUnlessReturningShouldBeDoneByTwin(tile) && | |
1261 tile->required_for_activation() == required_for_activation) { | |
1262 current_tile_ = tile; | |
1263 return; | |
1264 } | |
1265 } | |
1266 | |
1267 current_tile_ = nullptr; | |
1268 } | |
1269 | |
1270 bool PictureLayerTiling::TilingEvictionTileIterator:: | |
1271 PreparseTileUnlessReturningShouldBeDoneByTwin(Tile* tile) const { | |
vmpstr
2014/11/19 16:47:58
This is named a bit awkwardly. It feels like it's
USE eero AT chromium.org
2014/11/20 14:54:38
Yes, and avoids calling costly UpdateTileAndTwinPr
| |
1272 if (skip_shared_out_of_order_tiles_ && tile->is_shared()) { | |
1273 WhichTree tree = tiling_->client_->GetTree(); | |
1274 switch (tree_priority_) { | |
1275 case SMOOTHNESS_TAKES_PRIORITY: | |
1276 // The priority for tile priority of a shared tile will be the active | |
1277 // priority thus return shared tiles from the active tree. | |
1278 if (tree != ACTIVE_TREE) | |
1279 return false; | |
1280 break; | |
1281 case NEW_CONTENT_TAKES_PRIORITY: | |
1282 // The priority for tile priority of a shared tile will be the pending | |
1283 // priority thus return shared tiles from the pending tree. | |
1284 if (tree != PENDING_TREE) | |
1285 return false; | |
1286 break; | |
1287 case SAME_PRIORITY_FOR_BOTH_TREES: { | |
1288 // The priority for tile priority of a shared tile will be a combined | |
1289 // priority thus return shared tiles from a higher priority tree. | |
1290 tiling_->UpdateTileAndTwinPriority(tile); | |
1291 WhichTree other_tree = tree == ACTIVE_TREE ? PENDING_TREE : ACTIVE_TREE; | |
1292 const TilePriority& priority = tile->priority(tree); | |
1293 const TilePriority& other_priority = tile->priority(other_tree); | |
1294 if (priority.priority_bin != other_priority.priority_bin) | |
1295 return priority.priority_bin < other_priority.priority_bin; | |
1296 const bool occluded = tile->is_occluded(tree); | |
1297 const bool other_occluded = tile->is_occluded(other_tree); | |
1298 if (occluded != other_occluded) | |
1299 return !occluded; | |
1300 if (priority.distance_to_visible != other_priority.distance_to_visible) | |
1301 return priority.distance_to_visible < | |
1302 other_priority.distance_to_visible; | |
1303 // If priorities are the same, it does not matter which tree returns | |
1304 // the tile. Let's pick the active tree. | |
1305 return tree == ACTIVE_TREE; | |
1306 } | |
1307 default: | |
1308 NOTREACHED(); | |
1309 } | |
1310 } | |
1311 tiling_->UpdateTileAndTwinPriority(tile); | |
1312 return true; | |
1313 } | |
1314 | |
1238 PictureLayerTiling::TilingEvictionTileIterator::operator bool() const { | 1315 PictureLayerTiling::TilingEvictionTileIterator::operator bool() const { |
1239 return eviction_tiles_ && | 1316 return !!current_tile_; |
1240 current_eviction_tiles_index_ != eviction_tiles_->size(); | |
1241 } | 1317 } |
1242 | 1318 |
1243 Tile* PictureLayerTiling::TilingEvictionTileIterator::operator*() { | 1319 Tile* PictureLayerTiling::TilingEvictionTileIterator::operator*() { |
1244 DCHECK(*this); | 1320 DCHECK(*this); |
1245 return (*eviction_tiles_)[current_eviction_tiles_index_]; | 1321 return current_tile_; |
1246 } | 1322 } |
1247 | 1323 |
1248 const Tile* PictureLayerTiling::TilingEvictionTileIterator::operator*() const { | 1324 const Tile* PictureLayerTiling::TilingEvictionTileIterator::operator*() const { |
1249 DCHECK(*this); | 1325 DCHECK(*this); |
1250 return (*eviction_tiles_)[current_eviction_tiles_index_]; | 1326 return current_tile_; |
1251 } | 1327 } |
1252 | 1328 |
1253 PictureLayerTiling::TilingEvictionTileIterator& | 1329 PictureLayerTiling::TilingEvictionTileIterator& |
1254 PictureLayerTiling::TilingEvictionTileIterator:: | 1330 PictureLayerTiling::TilingEvictionTileIterator:: |
1255 operator++() { | 1331 operator++() { |
1256 DCHECK(*this); | 1332 DCHECK(*this); |
1257 do { | 1333 switch (eviction_category_) { |
1258 ++current_eviction_tiles_index_; | 1334 case EVENTUALLY: |
1259 } while (current_eviction_tiles_index_ != eviction_tiles_->size() && | 1335 case EVENTUALLY_AND_REQUIRED_FOR_ACTIVATION: |
1260 !(*eviction_tiles_)[current_eviction_tiles_index_]->HasResources()); | 1336 AdvanceEventually(); |
1261 | 1337 break; |
1338 case SOON: | |
1339 case SOON_AND_REQUIRED_FOR_ACTIVATION: | |
1340 AdvanceSoon(); | |
1341 break; | |
1342 case NOW: | |
1343 case NOW_AND_REQUIRED_FOR_ACTIVATION: | |
1344 AdvanceNow(); | |
1345 break; | |
1346 } | |
1262 return *this; | 1347 return *this; |
1263 } | 1348 } |
1264 | 1349 |
1265 } // namespace cc | 1350 } // namespace cc |
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