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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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135 // texture. | 135 // texture. |
136 void setActiveTextureUnit(GLint textureUnit) { m_activeTextureUnit = texture
Unit; } | 136 void setActiveTextureUnit(GLint textureUnit) { m_activeTextureUnit = texture
Unit; } |
137 | 137 |
138 bool multisample() const; | 138 bool multisample() const; |
139 | 139 |
140 Platform3DObject framebuffer() const; | 140 Platform3DObject framebuffer() const; |
141 | 141 |
142 void markContentsChanged(); | 142 void markContentsChanged(); |
143 void markLayerComposited(); | 143 void markLayerComposited(); |
144 bool layerComposited() const; | 144 bool layerComposited() const; |
145 void setIsHidden(bool); | |
146 | 145 |
147 blink::WebLayer* platformLayer(); | 146 blink::WebLayer* platformLayer(); |
148 void paintCompositedResultsToCanvas(ImageBuffer*); | 147 void paintCompositedResultsToCanvas(ImageBuffer*); |
149 | 148 |
150 blink::WebGraphicsContext3D* context(); | 149 blink::WebGraphicsContext3D* context(); |
151 | 150 |
152 // Returns the actual context attributes for this drawing buffer which may d
iffer from the | 151 // Returns the actual context attributes for this drawing buffer which may d
iffer from the |
153 // requested context attributes due to implementation limits. | 152 // requested context attributes due to implementation limits. |
154 blink::WebGraphicsContext3D::Attributes getActualAttributes() const { return
m_actualAttributes; } | 153 blink::WebGraphicsContext3D::Attributes getActualAttributes() const { return
m_actualAttributes; } |
155 | 154 |
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172 PassOwnPtr<Extensions3DUtil>, | 171 PassOwnPtr<Extensions3DUtil>, |
173 bool multisampleExtensionSupported, | 172 bool multisampleExtensionSupported, |
174 bool packedDepthStencilExtensionSupported, | 173 bool packedDepthStencilExtensionSupported, |
175 PreserveDrawingBuffer, | 174 PreserveDrawingBuffer, |
176 blink::WebGraphicsContext3D::Attributes requestedAttributes, | 175 blink::WebGraphicsContext3D::Attributes requestedAttributes, |
177 PassRefPtr<ContextEvictionManager>); | 176 PassRefPtr<ContextEvictionManager>); |
178 | 177 |
179 bool initialize(const IntSize&); | 178 bool initialize(const IntSize&); |
180 | 179 |
181 private: | 180 private: |
182 void mailboxReleasedWithoutRecycling(const blink::WebExternalTextureMailbox&
); | 181 void mailboxReleasedWhileDestructionInProgress(const blink::WebExternalTextu
reMailbox&); |
183 | 182 |
184 unsigned createColorTexture(); | 183 unsigned createColorTexture(); |
185 // Create the depth/stencil and multisample buffers, if needed. | 184 // Create the depth/stencil and multisample buffers, if needed. |
186 void createSecondaryBuffers(); | 185 void createSecondaryBuffers(); |
187 bool resizeFramebuffer(const IntSize&); | 186 bool resizeFramebuffer(const IntSize&); |
188 bool resizeMultisampleFramebuffer(const IntSize&); | 187 bool resizeMultisampleFramebuffer(const IntSize&); |
189 void resizeDepthStencil(const IntSize&); | 188 void resizeDepthStencil(const IntSize&); |
190 | 189 |
191 // Bind to the m_framebufferBinding if it's not 0. | 190 // Bind to the m_framebufferBinding if it's not 0. |
192 void restoreFramebufferBinding(); | 191 void restoreFramebufferBinding(); |
193 | 192 |
194 void clearPlatformLayer(); | 193 void clearPlatformLayer(); |
195 | 194 |
196 PassRefPtr<MailboxInfo> recycledMailbox(); | 195 PassRefPtr<MailboxInfo> recycledMailbox(); |
197 PassRefPtr<MailboxInfo> createNewMailbox(const TextureInfo&); | 196 PassRefPtr<MailboxInfo> createNewMailbox(const TextureInfo&); |
198 void deleteMailbox(const blink::WebExternalTextureMailbox&); | 197 void deleteMailbox(const blink::WebExternalTextureMailbox&); |
199 void freeRecycledMailboxes(); | |
200 | 198 |
201 // Updates the current size of the buffer, ensuring that s_currentResourceUs
ePixels is updated. | 199 // Updates the current size of the buffer, ensuring that s_currentResourceUs
ePixels is updated. |
202 void setSize(const IntSize& size); | 200 void setSize(const IntSize& size); |
203 | 201 |
204 // Calculates the difference in pixels between the current buffer size and t
he proposed size. | 202 // Calculates the difference in pixels between the current buffer size and t
he proposed size. |
205 static int pixelDelta(const IntSize& newSize, const IntSize& curSize); | 203 static int pixelDelta(const IntSize& newSize, const IntSize& curSize); |
206 | 204 |
207 // Given the desired buffer size, provides the largest dimensions that will
fit in the pixel budget | 205 // Given the desired buffer size, provides the largest dimensions that will
fit in the pixel budget |
208 // Returns true if the buffer will only fit if the oldest WebGL context is f
orcibly lost | 206 // Returns true if the buffer will only fit if the oldest WebGL context is f
orcibly lost |
209 IntSize adjustSizeWithContextEviction(const IntSize&, bool& evictContext); | 207 IntSize adjustSizeWithContextEviction(const IntSize&, bool& evictContext); |
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274 MultisampleMode m_multisampleMode; | 272 MultisampleMode m_multisampleMode; |
275 | 273 |
276 blink::WebGraphicsContext3D::Attributes m_actualAttributes; | 274 blink::WebGraphicsContext3D::Attributes m_actualAttributes; |
277 unsigned m_internalColorFormat; | 275 unsigned m_internalColorFormat; |
278 unsigned m_colorFormat; | 276 unsigned m_colorFormat; |
279 unsigned m_internalRenderbufferFormat; | 277 unsigned m_internalRenderbufferFormat; |
280 int m_maxTextureSize; | 278 int m_maxTextureSize; |
281 int m_sampleCount; | 279 int m_sampleCount; |
282 int m_packAlignment; | 280 int m_packAlignment; |
283 bool m_destructionInProgress; | 281 bool m_destructionInProgress; |
284 bool m_isHidden; | |
285 | 282 |
286 OwnPtr<blink::WebExternalTextureLayer> m_layer; | 283 OwnPtr<blink::WebExternalTextureLayer> m_layer; |
287 | 284 |
288 // All of the mailboxes that this DrawingBuffer has ever created. | 285 // All of the mailboxes that this DrawingBuffer has ever created. |
289 Vector<RefPtr<MailboxInfo> > m_textureMailboxes; | 286 Vector<RefPtr<MailboxInfo> > m_textureMailboxes; |
290 // Mailboxes that were released by the compositor can be used again by this
DrawingBuffer. | 287 // Mailboxes that were released by the compositor can be used again by this
DrawingBuffer. |
291 Deque<blink::WebExternalTextureMailbox> m_recycledMailboxQueue; | 288 Deque<blink::WebExternalTextureMailbox> m_recycledMailboxQueue; |
292 | 289 |
293 RefPtr<ContextEvictionManager> m_contextEvictionManager; | 290 RefPtr<ContextEvictionManager> m_contextEvictionManager; |
294 | 291 |
295 // If the width and height of the Canvas's backing store don't | 292 // If the width and height of the Canvas's backing store don't |
296 // match those that we were given in the most recent call to | 293 // match those that we were given in the most recent call to |
297 // reshape(), then we need an intermediate bitmap to read back the | 294 // reshape(), then we need an intermediate bitmap to read back the |
298 // frame buffer into. This seems to happen when CSS styles are | 295 // frame buffer into. This seems to happen when CSS styles are |
299 // used to resize the Canvas. | 296 // used to resize the Canvas. |
300 SkBitmap m_resizingBitmap; | 297 SkBitmap m_resizingBitmap; |
301 | 298 |
302 // Used to flip a bitmap vertically. | 299 // Used to flip a bitmap vertically. |
303 Vector<uint8_t> m_scanline; | 300 Vector<uint8_t> m_scanline; |
304 }; | 301 }; |
305 | 302 |
306 } // namespace WebCore | 303 } // namespace WebCore |
307 | 304 |
308 #endif // DrawingBuffer_h | 305 #endif // DrawingBuffer_h |
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