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1 // Copyright 2014 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/display_list_recording_source.h" | |
6 | |
7 #include <algorithm> | |
8 | |
9 #include "cc/base/region.h" | |
10 #include "cc/layers/content_layer_client.h" | |
11 #include "cc/resources/display_item_list.h" | |
12 #include "cc/resources/display_list_raster_source.h" | |
13 #include "skia/ext/analysis_canvas.h" | |
14 | |
15 namespace { | |
16 | |
17 // Layout pixel buffer around the visible layer rect to record. Any base | |
18 // picture that intersects the visible layer rect expanded by this distance | |
19 // will be recorded. | |
20 const int kPixelDistanceToRecord = 8000; | |
21 // We don't perform solid color analysis on images that have more than 10 skia | |
22 // operations. | |
23 const int kOpCountThatIsOkToAnalyze = 10; | |
24 | |
25 } // namespace | |
26 | |
27 namespace cc { | |
28 | |
29 DisplayListRecordingSource::DisplayListRecordingSource( | |
30 const gfx::Size& grid_cell_size, | |
31 bool use_cached_picture) | |
32 : use_cached_picture_(use_cached_picture), | |
33 slow_down_raster_scale_factor_for_debug_(0), | |
34 gather_pixel_refs_(false), | |
35 requires_clear_(false), | |
36 is_solid_color_(false), | |
37 solid_color_(SK_ColorTRANSPARENT), | |
38 background_color_(SK_ColorTRANSPARENT), | |
39 pixel_record_distance_(kPixelDistanceToRecord), | |
40 grid_cell_size_(grid_cell_size), | |
41 is_suitable_for_gpu_rasterization_(true) { | |
42 } | |
43 | |
44 DisplayListRecordingSource::~DisplayListRecordingSource() { | |
45 } | |
46 | |
47 bool DisplayListRecordingSource::UpdateAndExpandInvalidation( | |
48 ContentLayerClient* painter, | |
49 Region* invalidation, | |
50 const gfx::Size& layer_size, | |
51 const gfx::Rect& visible_layer_rect, | |
52 int frame_number, | |
53 RecordingMode recording_mode) { | |
54 bool updated = false; | |
55 | |
56 if (size_ != layer_size) { | |
57 size_ = layer_size; | |
58 updated = true; | |
59 } | |
60 | |
61 gfx::Rect old_recorded_viewport = recorded_viewport_; | |
62 recorded_viewport_ = visible_layer_rect; | |
63 recorded_viewport_.Inset(-pixel_record_distance_, -pixel_record_distance_); | |
64 recorded_viewport_.Intersect(gfx::Rect(GetSize())); | |
65 | |
66 if (recorded_viewport_ != old_recorded_viewport) { | |
67 // Invalidate newly-exposed and no-longer-exposed areas. | |
68 Region newly_exposed_region(recorded_viewport_); | |
69 newly_exposed_region.Subtract(old_recorded_viewport); | |
70 invalidation->Union(newly_exposed_region); | |
71 | |
72 Region no_longer_exposed_region(old_recorded_viewport); | |
73 no_longer_exposed_region.Subtract(recorded_viewport_); | |
74 invalidation->Union(no_longer_exposed_region); | |
75 | |
76 updated = true; | |
77 } | |
78 | |
79 if (!updated && !invalidation->Intersects(recorded_viewport_)) | |
80 return false; | |
81 | |
82 ContentLayerClient::PaintingControlSetting painting_control = | |
83 ContentLayerClient::PAINTING_BEHAVIOR_NORMAL; | |
84 | |
85 switch (recording_mode) { | |
86 case RECORD_NORMALLY: | |
87 // Already setup for normal recording. | |
88 break; | |
89 case RECORD_WITH_PAINTING_DISABLED: | |
90 painting_control = ContentLayerClient::DISPLAY_LIST_PAINTING_DISABLED; | |
91 break; | |
92 case RECORD_WITH_CACHING_DISABLED: | |
93 painting_control = ContentLayerClient::DISPLAY_LIST_CACHING_DISABLED; | |
94 break; | |
95 case RECORD_WITH_CONSTRUCTION_DISABLED: | |
96 painting_control = ContentLayerClient::DISPLAY_LIST_CONSTRUCTION_DISABLED; | |
97 break; | |
98 default: | |
99 // case RecordingSource::RECORD_WITH_SK_NULL_CANVAS should not be reached | |
100 NOTREACHED(); | |
101 } | |
102 | |
103 int repeat_count = 1; | |
104 if (slow_down_raster_scale_factor_for_debug_ > 1) { | |
105 repeat_count = slow_down_raster_scale_factor_for_debug_; | |
106 painting_control = ContentLayerClient::DISPLAY_LIST_CACHING_DISABLED; | |
107 } | |
108 for (int i = 0; i < repeat_count; ++i) { | |
109 display_list_ = | |
110 DisplayItemList::Create(recorded_viewport_, use_cached_picture_); | |
111 painter->PaintContentsToDisplayList(display_list_.get(), recorded_viewport_, | |
112 painting_control); | |
113 } | |
114 display_list_->ProcessAppendedItems(); | |
115 if (use_cached_picture_) | |
116 display_list_->CreateAndCacheSkPicture(); | |
117 | |
118 is_suitable_for_gpu_rasterization_ = | |
119 display_list_->IsSuitableForGpuRasterization(); | |
120 DetermineIfSolidColor(); | |
121 display_list_->EmitTraceSnapshot(); | |
122 if (gather_pixel_refs_) | |
123 display_list_->GatherPixelRefs(grid_cell_size_); | |
124 | |
125 return true; | |
126 } | |
127 | |
128 gfx::Size DisplayListRecordingSource::GetSize() const { | |
129 return size_; | |
130 } | |
131 | |
132 void DisplayListRecordingSource::SetEmptyBounds() { | |
133 size_ = gfx::Size(); | |
134 Clear(); | |
135 } | |
136 | |
137 void DisplayListRecordingSource::SetSlowdownRasterScaleFactor(int factor) { | |
138 slow_down_raster_scale_factor_for_debug_ = factor; | |
139 } | |
140 | |
141 void DisplayListRecordingSource::SetGatherPixelRefs(bool gather_pixel_refs) { | |
142 gather_pixel_refs_ = gather_pixel_refs; | |
143 } | |
144 | |
145 void DisplayListRecordingSource::SetBackgroundColor(SkColor background_color) { | |
146 background_color_ = background_color; | |
147 } | |
148 | |
149 void DisplayListRecordingSource::SetRequiresClear(bool requires_clear) { | |
150 requires_clear_ = requires_clear; | |
151 } | |
152 | |
153 void DisplayListRecordingSource::SetUnsuitableForGpuRasterizationForTesting() { | |
154 is_suitable_for_gpu_rasterization_ = false; | |
155 } | |
156 | |
157 bool DisplayListRecordingSource::IsSuitableForGpuRasterization() const { | |
158 return is_suitable_for_gpu_rasterization_; | |
159 } | |
160 | |
161 scoped_refptr<RasterSource> DisplayListRecordingSource::CreateRasterSource( | |
162 bool can_use_lcd_text) const { | |
163 return scoped_refptr<RasterSource>( | |
164 DisplayListRasterSource::CreateFromDisplayListRecordingSource( | |
165 this, can_use_lcd_text)); | |
166 } | |
167 | |
168 gfx::Size DisplayListRecordingSource::GetTileGridSizeForTesting() const { | |
169 return gfx::Size(); | |
170 } | |
171 | |
172 void DisplayListRecordingSource::DetermineIfSolidColor() { | |
173 DCHECK(display_list_.get()); | |
174 is_solid_color_ = false; | |
175 solid_color_ = SK_ColorTRANSPARENT; | |
176 | |
177 if (display_list_->ApproximateOpCount() > kOpCountThatIsOkToAnalyze) | |
178 return; | |
179 | |
180 gfx::Size layer_size = GetSize(); | |
181 skia::AnalysisCanvas canvas(layer_size.width(), layer_size.height()); | |
182 display_list_->Raster(&canvas, nullptr, 1.f); | |
183 is_solid_color_ = canvas.GetColorIfSolid(&solid_color_); | |
184 } | |
185 | |
186 void DisplayListRecordingSource::Clear() { | |
187 recorded_viewport_ = gfx::Rect(); | |
188 display_list_ = NULL; | |
189 is_solid_color_ = false; | |
190 } | |
191 | |
192 } // namespace cc | |
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