Source/core/platform/chromium/support/GraphicsContext3DPrivate.h - Issue 15301006: Merged GraphicsContext3DPrivate into GraphicsContext3D

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Issue 15301006: Merged GraphicsContext3DPrivate into GraphicsContext3D (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Removed ExtractWebGraphicsContext3D Created 7 years, 7 months ago

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1 /*

2 * Copyright (C) 2010 Google Inc. All rights reserved.

3 *

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

5 * modification, are permitted provided that the following conditions

6 * are met:

7 *

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

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

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

11 * notice, this list of conditions and the following disclaimer in the

12 * documentation and/or other materials provided with the distribution.

13 *

14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

24 */

25

26 #ifndef GraphicsContext3DPrivate_h

27 #define GraphicsContext3DPrivate_h

28

29 #include "SkBitmap.h"

30 #include "core/platform/graphics/Extensions3D.h"

31 #include "core/platform/graphics/GraphicsContext3D.h"

32 #include <wtf/HashSet.h>

33 #include <wtf/OwnArrayPtr.h>

34 #include <wtf/OwnPtr.h>

35

36 class GrContext;

37

38 namespace WebKit {

39 class WebGraphicsContext3D;

40 class WebGraphicsContext3DProvider;

41 }

42

43 namespace WebCore {

44

45 class DrawingBuffer;

46 class Extensions3D;

47 class GraphicsContext3DContextLostCallbackAdapter;

48 class GraphicsContext3DErrorMessageCallbackAdapter;

49 class GrMemoryAllocationChangedCallbackAdapter;

50

51 class GraphicsContext3DPrivate {

52 public:

53 // Callers must make the context current before using it AND check that the context was created successfully

54 // via ContextLost before using the context in any way. Once made current on a thread, the context cannot

55 // be used on any other thread.

56 static PassRefPtr<GraphicsContext3D> createGraphicsContextFromWebContext(Pas sOwnPtr<WebKit::WebGraphicsContext3D>, bool preserveDrawingBuffer = false);

57

58 static PassRefPtr<GraphicsContext3D> createGraphicsContextFromProvider(PassO wnPtr<WebKit::WebGraphicsContext3DProvider>, bool preserveDrawingBuffer = false) ;

59

60 // Helper function to provide access to the lower-level WebGraphicsContext3D ,

61 // which is needed for subordinate contexts like WebGL's to share resources

62 // with the compositor's context.

63 static WebKit::WebGraphicsContext3D* extractWebGraphicsContext3D(GraphicsCon text3D*);

64

65 virtual ~GraphicsContext3DPrivate();

66

67 WebKit::WebGraphicsContext3D* webContext() const { return m_impl; }

68

69 GrContext* grContext();

70

71 void markContextChanged();

72 bool layerComposited() const;

73 void markLayerComposited();

74

75 void paintFramebufferToCanvas(int framebuffer, int width, int height, bool p remultiplyAlpha, ImageBuffer*);

76

77 void setContextLostCallback(PassOwnPtr<GraphicsContext3D::ContextLostCallbac k>);

78 void setErrorMessageCallback(PassOwnPtr<GraphicsContext3D::ErrorMessageCallb ack>);

79

80 // Extensions3D support.

81 Extensions3D* getExtensions();

82 bool supportsExtension(const String& name);

83 bool ensureExtensionEnabled(const String& name);

84 bool isExtensionEnabled(const String& name);

85

86 bool isResourceSafe();

87

88 bool preserveDrawingBuffer() const { return m_preserveDrawingBuffer; }

89

90 private:

91 GraphicsContext3DPrivate(PassOwnPtr<WebKit::WebGraphicsContext3D>, bool pres erveDrawingBuffer);

92 GraphicsContext3DPrivate(PassOwnPtr<WebKit::WebGraphicsContext3DProvider>, b ool preserveDrawingBuffer);

93

94 void initializeExtensions();

95

96 OwnPtr<WebKit::WebGraphicsContext3DProvider> m_provider;

97 WebKit::WebGraphicsContext3D* m_impl;

98 OwnPtr<WebKit::WebGraphicsContext3D> m_ownedWebContext;

99 OwnPtr<Extensions3D> m_extensions;

100 OwnPtr<GraphicsContext3DContextLostCallbackAdapter> m_contextLostCallbackAda pter;

101 OwnPtr<GraphicsContext3DErrorMessageCallbackAdapter> m_errorMessageCallbackA dapter;

102 OwnPtr<GrMemoryAllocationChangedCallbackAdapter> m_grContextMemoryAllocation CallbackAdapter;

103 bool m_initializedAvailableExtensions;

104 HashSet<String> m_enabledExtensions;

105 HashSet<String> m_requestableExtensions;

106 bool m_layerComposited;

107 bool m_preserveDrawingBuffer;

108

109 enum ResourceSafety {

110 ResourceSafetyUnknown,

111 ResourceSafe,

112 ResourceUnsafe

113 };

114 ResourceSafety m_resourceSafety;

115

116 // If the width and height of the Canvas's backing store don't

117 // match those that we were given in the most recent call to

118 // reshape(), then we need an intermediate bitmap to read back the

119 // frame buffer into. This seems to happen when CSS styles are

120 // used to resize the Canvas.

121 SkBitmap m_resizingBitmap;

122

123 GrContext* m_grContext;

124 SkAutoTUnref<GrContext> m_ownedGrContext;

125 };

126

127 } // namespace WebCore

128

129 #endif // GraphicsContext3DPrivate_h

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