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| 1 /* | 1 /* |
| 2 * Copyright (c) 2010, Google Inc. All rights reserved. | 2 * Copyright (c) 2010, 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 are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * 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 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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| 34 #include "core/platform/graphics/GraphicsContext3D.h" | 34 #include "core/platform/graphics/GraphicsContext3D.h" |
| 35 #include "platform/geometry/IntSize.h" | 35 #include "platform/geometry/IntSize.h" |
| 36 #include "platform/graphics/GraphicsTypes3D.h" | 36 #include "platform/graphics/GraphicsTypes3D.h" |
| 37 | 37 |
| 38 #include "public/platform/WebExternalTextureLayerClient.h" | 38 #include "public/platform/WebExternalTextureLayerClient.h" |
| 39 #include "public/platform/WebExternalTextureMailbox.h" | 39 #include "public/platform/WebExternalTextureMailbox.h" |
| 40 #include "wtf/Noncopyable.h" | 40 #include "wtf/Noncopyable.h" |
| 41 #include "wtf/OwnPtr.h" | 41 #include "wtf/OwnPtr.h" |
| 42 #include "wtf/PassOwnPtr.h" | 42 #include "wtf/PassOwnPtr.h" |
| 43 | 43 |
| 44 namespace WebKit { | 44 namespace blink { |
| 45 class WebExternalBitmap; | 45 class WebExternalBitmap; |
| 46 class WebExternalTextureLayer; | 46 class WebExternalTextureLayer; |
| 47 class WebGraphicsContext3D; | 47 class WebGraphicsContext3D; |
| 48 class WebLayer; | 48 class WebLayer; |
| 49 } | 49 } |
| 50 | 50 |
| 51 namespace WebCore { | 51 namespace WebCore { |
| 52 class GraphicsContext3D; | 52 class GraphicsContext3D; |
| 53 class ImageData; | 53 class ImageData; |
| 54 | 54 |
| 55 // Abstract interface to allow basic context eviction management | 55 // Abstract interface to allow basic context eviction management |
| 56 class ContextEvictionManager : public RefCounted<ContextEvictionManager> { | 56 class ContextEvictionManager : public RefCounted<ContextEvictionManager> { |
| 57 public: | 57 public: |
| 58 virtual ~ContextEvictionManager() {}; | 58 virtual ~ContextEvictionManager() {}; |
| 59 | 59 |
| 60 virtual void forciblyLoseOldestContext(const String& reason) = 0; | 60 virtual void forciblyLoseOldestContext(const String& reason) = 0; |
| 61 virtual IntSize oldestContextSize() = 0; | 61 virtual IntSize oldestContextSize() = 0; |
| 62 }; | 62 }; |
| 63 | 63 |
| 64 // Manages a rendering target (framebuffer + attachment) for a canvas. Can publ
ish its rendering | 64 // Manages a rendering target (framebuffer + attachment) for a canvas. Can publ
ish its rendering |
| 65 // results to a WebKit::WebLayer for compositing. | 65 // results to a blink::WebLayer for compositing. |
| 66 class DrawingBuffer : public RefCounted<DrawingBuffer>, public WebKit::WebExtern
alTextureLayerClient { | 66 class DrawingBuffer : public RefCounted<DrawingBuffer>, public blink::WebExterna
lTextureLayerClient { |
| 67 struct MailboxInfo : public RefCounted<MailboxInfo> { | 67 struct MailboxInfo : public RefCounted<MailboxInfo> { |
| 68 WebKit::WebExternalTextureMailbox mailbox; | 68 blink::WebExternalTextureMailbox mailbox; |
| 69 unsigned textureId; | 69 unsigned textureId; |
| 70 IntSize size; | 70 IntSize size; |
| 71 }; | 71 }; |
| 72 public: | 72 public: |
| 73 enum PreserveDrawingBuffer { | 73 enum PreserveDrawingBuffer { |
| 74 Preserve, | 74 Preserve, |
| 75 Discard | 75 Discard |
| 76 }; | 76 }; |
| 77 | 77 |
| 78 static PassRefPtr<DrawingBuffer> create(GraphicsContext3D*, const IntSize&,
PreserveDrawingBuffer, PassRefPtr<ContextEvictionManager>); | 78 static PassRefPtr<DrawingBuffer> create(GraphicsContext3D*, const IntSize&,
PreserveDrawingBuffer, PassRefPtr<ContextEvictionManager>); |
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| 113 // Track the currently active texture unit. Texture unit 0 is used as host f
or a scratch | 113 // Track the currently active texture unit. Texture unit 0 is used as host f
or a scratch |
| 114 // texture. | 114 // texture. |
| 115 void setActiveTextureUnit(GC3Dint textureUnit) { m_activeTextureUnit = textu
reUnit; } | 115 void setActiveTextureUnit(GC3Dint textureUnit) { m_activeTextureUnit = textu
reUnit; } |
| 116 | 116 |
| 117 bool multisample() const; | 117 bool multisample() const; |
| 118 | 118 |
| 119 Platform3DObject framebuffer() const; | 119 Platform3DObject framebuffer() const; |
| 120 | 120 |
| 121 void markContentsChanged(); | 121 void markContentsChanged(); |
| 122 | 122 |
| 123 WebKit::WebLayer* platformLayer(); | 123 blink::WebLayer* platformLayer(); |
| 124 void paintCompositedResultsToCanvas(ImageBuffer*); | 124 void paintCompositedResultsToCanvas(ImageBuffer*); |
| 125 | 125 |
| 126 // WebExternalTextureLayerClient implementation. | 126 // WebExternalTextureLayerClient implementation. |
| 127 virtual WebKit::WebGraphicsContext3D* context() OVERRIDE; | 127 virtual blink::WebGraphicsContext3D* context() OVERRIDE; |
| 128 virtual bool prepareMailbox(WebKit::WebExternalTextureMailbox*, WebKit::WebE
xternalBitmap*) OVERRIDE; | 128 virtual bool prepareMailbox(blink::WebExternalTextureMailbox*, blink::WebExt
ernalBitmap*) OVERRIDE; |
| 129 virtual void mailboxReleased(const WebKit::WebExternalTextureMailbox&) OVERR
IDE; | 129 virtual void mailboxReleased(const blink::WebExternalTextureMailbox&) OVERRI
DE; |
| 130 | 130 |
| 131 bool copyToPlatformTexture(GraphicsContext3D&, Platform3DObject texture, GC3
Denum internalFormat, | 131 bool copyToPlatformTexture(GraphicsContext3D&, Platform3DObject texture, GC3
Denum internalFormat, |
| 132 GC3Denum destType, GC3Dint level, bool premultiplyAlpha, bool flipY); | 132 GC3Denum destType, GC3Dint level, bool premultiplyAlpha, bool flipY); |
| 133 | 133 |
| 134 private: | 134 private: |
| 135 DrawingBuffer(GraphicsContext3D*, const IntSize&, bool multisampleExtensionS
upported, | 135 DrawingBuffer(GraphicsContext3D*, const IntSize&, bool multisampleExtensionS
upported, |
| 136 bool packedDepthStencilExtensionSupported, PreserveDrawingBuff
er, PassRefPtr<ContextEvictionManager>); | 136 bool packedDepthStencilExtensionSupported, PreserveDrawingBuff
er, PassRefPtr<ContextEvictionManager>); |
| 137 | 137 |
| 138 void initialize(const IntSize&); | 138 void initialize(const IntSize&); |
| 139 | 139 |
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| 195 | 195 |
| 196 // True if commit() has been called since the last time markContentsChanged(
) had been called. | 196 // True if commit() has been called since the last time markContentsChanged(
) had been called. |
| 197 bool m_contentsChangeCommitted; | 197 bool m_contentsChangeCommitted; |
| 198 | 198 |
| 199 GraphicsContext3D::Attributes m_attributes; | 199 GraphicsContext3D::Attributes m_attributes; |
| 200 unsigned m_internalColorFormat; | 200 unsigned m_internalColorFormat; |
| 201 unsigned m_colorFormat; | 201 unsigned m_colorFormat; |
| 202 unsigned m_internalRenderbufferFormat; | 202 unsigned m_internalRenderbufferFormat; |
| 203 int m_maxTextureSize; | 203 int m_maxTextureSize; |
| 204 | 204 |
| 205 OwnPtr<WebKit::WebExternalTextureLayer> m_layer; | 205 OwnPtr<blink::WebExternalTextureLayer> m_layer; |
| 206 | 206 |
| 207 // All of the mailboxes that this DrawingBuffer has ever created. | 207 // All of the mailboxes that this DrawingBuffer has ever created. |
| 208 Vector<RefPtr<MailboxInfo> > m_textureMailboxes; | 208 Vector<RefPtr<MailboxInfo> > m_textureMailboxes; |
| 209 // Mailboxes that were released by the compositor and can be used again by t
his DrawingBuffer. | 209 // Mailboxes that were released by the compositor and can be used again by t
his DrawingBuffer. |
| 210 Vector<RefPtr<MailboxInfo> > m_recycledMailboxes; | 210 Vector<RefPtr<MailboxInfo> > m_recycledMailboxes; |
| 211 RefPtr<MailboxInfo> m_lastColorBuffer; | 211 RefPtr<MailboxInfo> m_lastColorBuffer; |
| 212 | 212 |
| 213 RefPtr<ContextEvictionManager> m_contextEvictionManager; | 213 RefPtr<ContextEvictionManager> m_contextEvictionManager; |
| 214 }; | 214 }; |
| 215 | 215 |
| 216 } // namespace WebCore | 216 } // namespace WebCore |
| 217 | 217 |
| 218 #endif // DrawingBuffer_h | 218 #endif // DrawingBuffer_h |
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