Source/platform/graphics/Canvas2DLayerBridge.h - Issue 562583002: Implement image-rendering:pixelated for accelerated 2D canvases.

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Issue 562583002: Implement image-rendering:pixelated for accelerated 2D canvases. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Don't call setImageInterpolationQuality Created 6 years ago

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1 /*	1 /*

2 * Copyright (C) 2012 Google Inc. All rights reserved.	2 * Copyright (C) 2012 Google Inc. All rights reserved.

3 *	3 *

4 * Redistribution and use in source and binary forms, with or without	4 * Redistribution and use in source and binary forms, with or without

5 * modification, are permitted provided that the following conditions	5 * modification, are permitted provided that the following conditions

6 * are met:	6 * are met:

7 *	7 *

8 * 1. Redistributions of source code must retain the above copyright	8 * 1. Redistributions of source code must retain the above copyright

9 * notice, this list of conditions and the following disclaimer.	9 * notice, this list of conditions and the following disclaimer.

10 * 2. Redistributions in binary form must reproduce the above copyright	10 * 2. Redistributions in binary form must reproduce the above copyright

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68	68

69 // ImageBufferSurface implementation	69 // ImageBufferSurface implementation

70 void finalizeFrame(const FloatRect &dirtyRect);	70 void finalizeFrame(const FloatRect &dirtyRect);

71 void willAccessPixels();	71 void willAccessPixels();

72 SkCanvas* canvas() const { return m_canvas.get(); }	72 SkCanvas* canvas() const { return m_canvas.get(); }

73 bool checkSurfaceValid();	73 bool checkSurfaceValid();

74 bool restoreSurface();	74 bool restoreSurface();

75 WebLayer* layer() const;	75 WebLayer* layer() const;

76 Platform3DObject getBackingTexture();	76 Platform3DObject getBackingTexture();

77 bool isAccelerated() const { return true; }	77 bool isAccelerated() const { return true; }

	78 void setFilterLevel(SkPaint::FilterLevel);

78 void setIsHidden(bool);	79 void setIsHidden(bool);

79 void setImageBuffer(ImageBuffer* imageBuffer) { m_imageBuffer = imageBuffer; }	80 void setImageBuffer(ImageBuffer* imageBuffer) { m_imageBuffer = imageBuffer; }

80	81

81 // Methods used by Canvas2DLayerManager	82 // Methods used by Canvas2DLayerManager

82 virtual size_t freeMemoryIfPossible(size_t); // virtual for mocking	83 virtual size_t freeMemoryIfPossible(size_t); // virtual for mocking

83 virtual void flush(); // virtual for mocking	84 virtual void flush(); // virtual for mocking

84 virtual size_t storageAllocatedForRecording(); // virtual for faking	85 virtual size_t storageAllocatedForRecording(); // virtual for faking

85 size_t bytesAllocated() const { return m_bytesAllocated; }	86 size_t bytesAllocated() const { return m_bytesAllocated; }

86 void limitPendingFrames();	87 void limitPendingFrames();

87 void freeTransientResources();	88 void freeTransientResources();

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103 OwnPtr<WebGraphicsContext3DProvider> m_contextProvider;	104 OwnPtr<WebGraphicsContext3DProvider> m_contextProvider;

104 ImageBuffer* m_imageBuffer;	105 ImageBuffer* m_imageBuffer;

105 int m_msaaSampleCount;	106 int m_msaaSampleCount;

106 size_t m_bytesAllocated;	107 size_t m_bytesAllocated;

107 bool m_didRecordDrawCommand;	108 bool m_didRecordDrawCommand;

108 bool m_isSurfaceValid;	109 bool m_isSurfaceValid;

109 int m_framesPending;	110 int m_framesPending;

110 int m_framesSinceMailboxRelease;	111 int m_framesSinceMailboxRelease;

111 bool m_destructionInProgress;	112 bool m_destructionInProgress;

112 bool m_rateLimitingEnabled;	113 bool m_rateLimitingEnabled;

	114 SkPaint::FilterLevel m_filterLevel;

113 bool m_isHidden;	115 bool m_isHidden;

114	116

115 friend class WTF::DoublyLinkedListNode<Canvas2DLayerBridge>;	117 friend class WTF::DoublyLinkedListNode<Canvas2DLayerBridge>;

116 friend class ::Canvas2DLayerBridgeTest;	118 friend class ::Canvas2DLayerBridgeTest;

117 Canvas2DLayerBridge* m_next;	119 Canvas2DLayerBridge* m_next;

118 Canvas2DLayerBridge* m_prev;	120 Canvas2DLayerBridge* m_prev;

119	121

120 struct MailboxInfo {	122 struct MailboxInfo {

121 WebExternalTextureMailbox m_mailbox;	123 WebExternalTextureMailbox m_mailbox;

122 RefPtr<SkImage> m_image;	124 RefPtr<SkImage> m_image;

123 RefPtr<Canvas2DLayerBridge> m_parentLayerBridge;	125 RefPtr<Canvas2DLayerBridge> m_parentLayerBridge;

124	126

125 MailboxInfo(const MailboxInfo&);	127 MailboxInfo(const MailboxInfo&);

126 MailboxInfo() {}	128 MailboxInfo() {}

127 };	129 };

128	130

129 uint32_t m_lastImageId;	131 uint32_t m_lastImageId;

130	132

131 enum {	133 enum {

132 // We should normally not have more that two active mailboxes at a time,	134 // We should normally not have more that two active mailboxes at a time,

133 // but sometime we may have three due to the async nature of mailbox han dling.	135 // but sometime we may have three due to the async nature of mailbox han dling.

134 MaxActiveMailboxes = 3,	136 MaxActiveMailboxes = 3,

135 };	137 };

136	138

137 Deque<MailboxInfo, MaxActiveMailboxes> m_mailboxes;	139 Deque<MailboxInfo, MaxActiveMailboxes> m_mailboxes;

	140 GLenum m_lastFilter;

138 OpacityMode m_opacityMode;	141 OpacityMode m_opacityMode;

139 };	142 };

140	143

141 } // namespace blink	144 } // namespace blink

142	145

143 #endif	146 #endif

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