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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 #ifndef CC_PLAYBACK_DISPLAY_LIST_RASTER_SOURCE_H_ | |
| 6 #define CC_PLAYBACK_DISPLAY_LIST_RASTER_SOURCE_H_ | |
| 7 | |
| 8 #include <stddef.h> | |
| 9 | |
| 10 #include <vector> | |
| 11 | |
| 12 #include "base/macros.h" | |
| 13 #include "base/memory/scoped_ptr.h" | |
| 14 #include "base/threading/thread_checker.h" | |
| 15 #include "base/trace_event/memory_allocator_dump.h" | |
| 16 #include "base/trace_event/memory_dump_provider.h" | |
| 17 #include "cc/base/cc_export.h" | |
| 18 #include "cc/debug/rendering_stats_instrumentation.h" | |
| 19 #include "cc/playback/display_list_recording_source.h" | |
| 20 #include "skia/ext/analysis_canvas.h" | |
| 21 #include "third_party/skia/include/core/SkPicture.h" | |
| 22 | |
| 23 namespace cc { | |
| 24 class DisplayItemList; | |
| 25 class DrawImage; | |
| 26 class ImageDecodeController; | |
| 27 | |
| 28 class CC_EXPORT DisplayListRasterSource | |
| 29 : public base::trace_event::MemoryDumpProvider, | |
| 30 public base::RefCountedThreadSafe<DisplayListRasterSource> { | |
| 31 public: | |
| 32 static scoped_refptr<DisplayListRasterSource> | |
| 33 CreateFromDisplayListRecordingSource(const DisplayListRecordingSource* other, | |
| 34 bool can_use_lcd_text); | |
| 35 | |
| 36 // Raster a subrect of this RasterSource into the given canvas. It is | |
| 37 // assumed that contents_scale has already been applied to this canvas. | |
| 38 // Writes the total number of pixels rasterized and the time spent | |
| 39 // rasterizing to the stats if the respective pointer is not nullptr. | |
| 40 // It is assumed that the canvas passed here will only be rasterized by | |
| 41 // this raster source via this call. | |
| 42 // | |
| 43 // Virtual for testing. | |
| 44 // | |
| 45 // Note that this should only be called after the image decode controller has | |
| 46 // been set, which happens during commit. | |
| 47 virtual void PlaybackToCanvas(SkCanvas* canvas, | |
| 48 const gfx::Rect& canvas_bitmap_rect, | |
| 49 const gfx::Rect& canvas_playback_rect, | |
| 50 float contents_scale, | |
| 51 bool include_images) const; | |
| 52 | |
| 53 // Similar to above, except that the canvas passed here can (or was already) | |
| 54 // rasterized into by another raster source. That is, it is not safe to clear | |
| 55 // the canvas or discard its underlying memory. | |
| 56 void PlaybackToSharedCanvas(SkCanvas* canvas, | |
| 57 const gfx::Rect& canvas_rect, | |
| 58 float contents_scale, | |
| 59 bool include_images) const; | |
| 60 | |
| 61 // Returns whether the given rect at given scale is of solid color in | |
| 62 // this raster source, as well as the solid color value. | |
| 63 bool PerformSolidColorAnalysis(const gfx::Rect& content_rect, | |
| 64 float contents_scale, | |
| 65 SkColor* color) const; | |
| 66 | |
| 67 // Returns true iff the whole raster source is of solid color. | |
| 68 bool IsSolidColor() const; | |
| 69 | |
| 70 // Returns the color of the raster source if it is solid color. The results | |
| 71 // are unspecified if IsSolidColor returns false. | |
| 72 SkColor GetSolidColor() const; | |
| 73 | |
| 74 // Returns the size of this raster source. | |
| 75 gfx::Size GetSize() const; | |
| 76 | |
| 77 // Populate the given list with all images that may overlap the given | |
| 78 // rect in layer space. The returned draw images' matrices are modified as if | |
| 79 // they were being using during raster at scale |raster_scale|. | |
| 80 void GetDiscardableImagesInRect(const gfx::Rect& layer_rect, | |
| 81 float raster_scale, | |
| 82 std::vector<DrawImage>* images) const; | |
| 83 | |
| 84 // Return true iff this raster source can raster the given rect in layer | |
| 85 // space. | |
| 86 bool CoversRect(const gfx::Rect& layer_rect) const; | |
| 87 | |
| 88 // Returns true if this raster source has anything to rasterize. | |
| 89 virtual bool HasRecordings() const; | |
| 90 | |
| 91 // Valid rectangle in which everything is recorded and can be rastered from. | |
| 92 virtual gfx::Rect RecordedViewport() const; | |
| 93 | |
| 94 // Informs the raster source that it should attempt to use distance field text | |
| 95 // during rasterization. | |
| 96 virtual void SetShouldAttemptToUseDistanceFieldText(); | |
| 97 | |
| 98 // Return true iff this raster source would benefit from using distance | |
| 99 // field text. | |
| 100 virtual bool ShouldAttemptToUseDistanceFieldText() const; | |
| 101 | |
| 102 // Tracing functionality. | |
| 103 virtual void DidBeginTracing(); | |
| 104 virtual void AsValueInto(base::trace_event::TracedValue* array) const; | |
| 105 virtual sk_sp<SkPicture> GetFlattenedPicture(); | |
| 106 virtual size_t GetPictureMemoryUsage() const; | |
| 107 | |
| 108 // Return true if LCD anti-aliasing may be used when rastering text. | |
| 109 virtual bool CanUseLCDText() const; | |
| 110 | |
| 111 scoped_refptr<DisplayListRasterSource> CreateCloneWithoutLCDText() const; | |
| 112 | |
| 113 // Image decode controller should be set once. Its lifetime has to exceed that | |
| 114 // of the raster source, since the raster source will access it during raster. | |
| 115 void SetImageDecodeController(ImageDecodeController* image_decode_controller); | |
| 116 | |
| 117 // base::trace_event::MemoryDumpProvider implementation | |
| 118 bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args, | |
| 119 base::trace_event::ProcessMemoryDump* pmd) override; | |
| 120 | |
| 121 protected: | |
| 122 friend class base::RefCountedThreadSafe<DisplayListRasterSource>; | |
| 123 | |
| 124 DisplayListRasterSource(const DisplayListRecordingSource* other, | |
| 125 bool can_use_lcd_text); | |
| 126 DisplayListRasterSource(const DisplayListRasterSource* other, | |
| 127 bool can_use_lcd_text); | |
| 128 ~DisplayListRasterSource() override; | |
| 129 | |
| 130 // These members are const as this raster source may be in use on another | |
| 131 // thread and so should not be touched after construction. | |
| 132 const scoped_refptr<DisplayItemList> display_list_; | |
| 133 const size_t painter_reported_memory_usage_; | |
| 134 const SkColor background_color_; | |
| 135 const bool requires_clear_; | |
| 136 const bool can_use_lcd_text_; | |
| 137 const bool is_solid_color_; | |
| 138 const SkColor solid_color_; | |
| 139 const gfx::Rect recorded_viewport_; | |
| 140 const gfx::Size size_; | |
| 141 const bool clear_canvas_with_debug_color_; | |
| 142 const int slow_down_raster_scale_factor_for_debug_; | |
| 143 // TODO(enne/vmiura): this has a read/write race between raster and compositor | |
| 144 // threads with multi-threaded Ganesh. Make this const or remove it. | |
| 145 bool should_attempt_to_use_distance_field_text_; | |
| 146 | |
| 147 // In practice, this is only set once before raster begins, so it's ok with | |
| 148 // respect to threading. | |
| 149 ImageDecodeController* image_decode_controller_; | |
| 150 | |
| 151 private: | |
| 152 // Called when analyzing a tile. We can use AnalysisCanvas as | |
| 153 // SkPicture::AbortCallback, which allows us to early out from analysis. | |
| 154 void RasterForAnalysis(skia::AnalysisCanvas* canvas, | |
| 155 const gfx::Rect& canvas_rect, | |
| 156 float contents_scale) const; | |
| 157 | |
| 158 void RasterCommon(SkCanvas* canvas, | |
| 159 SkPicture::AbortCallback* callback, | |
| 160 const gfx::Rect& canvas_bitmap_rect, | |
| 161 const gfx::Rect& canvas_playback_rect, | |
| 162 float contents_scale) const; | |
| 163 | |
| 164 void PrepareForPlaybackToCanvas(SkCanvas* canvas, | |
| 165 const gfx::Rect& canvas_bitmap_rect, | |
| 166 const gfx::Rect& canvas_playback_rect, | |
| 167 float contents_scale) const; | |
| 168 | |
| 169 // Used to ensure that memory dump logic always happens on the same thread. | |
| 170 base::ThreadChecker memory_dump_thread_checker_; | |
| 171 | |
| 172 DISALLOW_COPY_AND_ASSIGN(DisplayListRasterSource); | |
| 173 }; | |
| 174 | |
| 175 } // namespace cc | |
| 176 | |
| 177 #endif // CC_PLAYBACK_DISPLAY_LIST_RASTER_SOURCE_H_ | |
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Chromium Code Reviews
Issue 1837263005:
cc: Rename DisplayListRasterSource to just RasterSource. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master