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| 1 /* | |
| 2 * Copyright (C) 2012 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 #include "config.h" | |
| 27 | |
| 28 #include "core/platform/graphics/Canvas2DLayerBridge.h" | |
| 29 | |
| 30 #include "GrContext.h" | |
| 31 #include "SkDevice.h" | |
| 32 #include "SkSurface.h" | |
| 33 #include "core/platform/graphics/Canvas2DLayerManager.h" | |
| 34 #include "core/platform/graphics/GraphicsLayer.h" | |
| 35 #include "core/platform/graphics/gpu/SharedGraphicsContext3D.h" | |
| 36 #include "platform/TraceEvent.h" | |
| 37 #include "public/platform/Platform.h" | |
| 38 #include "public/platform/WebCompositorSupport.h" | |
| 39 #include "public/platform/WebGraphicsContext3D.h" | |
| 40 | |
| 41 using blink::WebExternalTextureLayer; | |
| 42 using blink::WebGraphicsContext3D; | |
| 43 | |
| 44 namespace WebCore { | |
| 45 | |
| 46 void Canvas2DLayerBridgePtr::clear() | |
| 47 { | |
| 48 if (m_ptr) { | |
| 49 m_ptr->destroy(); | |
| 50 m_ptr.clear(); | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 Canvas2DLayerBridgePtr& Canvas2DLayerBridgePtr::operator=(const PassRefPtr<Canva
s2DLayerBridge>& other) | |
| 55 { | |
| 56 clear(); | |
| 57 m_ptr = other; | |
| 58 return *this; | |
| 59 } | |
| 60 | |
| 61 static SkSurface* createSurface(GraphicsContext3D* context3D, const IntSize& siz
e, int msaaSampleCount) | |
| 62 { | |
| 63 ASSERT(!context3D->webContext()->isContextLost()); | |
| 64 GrContext* gr = context3D->grContext(); | |
| 65 if (!gr) | |
| 66 return 0; | |
| 67 gr->resetContext(); | |
| 68 SkImageInfo info; | |
| 69 info.fWidth = size.width(); | |
| 70 info.fHeight = size.height(); | |
| 71 info.fColorType = kPMColor_SkColorType; | |
| 72 info.fAlphaType = kPremul_SkAlphaType; | |
| 73 return SkSurface::NewRenderTarget(gr, info, msaaSampleCount); | |
| 74 } | |
| 75 | |
| 76 PassRefPtr<Canvas2DLayerBridge> Canvas2DLayerBridge::create(PassRefPtr<GraphicsC
ontext3D> context, const IntSize& size, OpacityMode opacityMode, int msaaSampleC
ount) | |
| 77 { | |
| 78 TRACE_EVENT_INSTANT0("test_gpu", "Canvas2DLayerBridgeCreation"); | |
| 79 SkAutoTUnref<SkSurface> surface(createSurface(context.get(), size, msaaSampl
eCount)); | |
| 80 if (!surface.get()) { | |
| 81 return PassRefPtr<Canvas2DLayerBridge>(); | |
| 82 } | |
| 83 RefPtr<SkDeferredCanvas> canvas = adoptRef(SkDeferredCanvas::Create(surface.
get())); | |
| 84 RefPtr<Canvas2DLayerBridge> layerBridge = adoptRef(new Canvas2DLayerBridge(c
ontext, canvas.release(), msaaSampleCount, opacityMode)); | |
| 85 return layerBridge.release(); | |
| 86 } | |
| 87 | |
| 88 Canvas2DLayerBridge::Canvas2DLayerBridge(PassRefPtr<GraphicsContext3D> context,
PassRefPtr<SkDeferredCanvas> canvas, int msaaSampleCount, OpacityMode opacityMod
e) | |
| 89 : m_canvas(canvas) | |
| 90 , m_context(context) | |
| 91 , m_msaaSampleCount(msaaSampleCount) | |
| 92 , m_bytesAllocated(0) | |
| 93 , m_didRecordDrawCommand(false) | |
| 94 , m_surfaceIsValid(true) | |
| 95 , m_framesPending(0) | |
| 96 , m_destructionInProgress(false) | |
| 97 , m_rateLimitingEnabled(false) | |
| 98 , m_next(0) | |
| 99 , m_prev(0) | |
| 100 , m_lastImageId(0) | |
| 101 { | |
| 102 ASSERT(m_canvas); | |
| 103 // Used by browser tests to detect the use of a Canvas2DLayerBridge. | |
| 104 TRACE_EVENT_INSTANT0("test_gpu", "Canvas2DLayerBridgeCreation"); | |
| 105 m_layer = adoptPtr(blink::Platform::current()->compositorSupport()->createEx
ternalTextureLayer(this)); | |
| 106 m_layer->setOpaque(opacityMode == Opaque); | |
| 107 m_layer->setBlendBackgroundColor(opacityMode != Opaque); | |
| 108 GraphicsLayer::registerContentsLayer(m_layer->layer()); | |
| 109 m_layer->setRateLimitContext(m_rateLimitingEnabled); | |
| 110 m_canvas->setNotificationClient(this); | |
| 111 } | |
| 112 | |
| 113 Canvas2DLayerBridge::~Canvas2DLayerBridge() | |
| 114 { | |
| 115 ASSERT(m_destructionInProgress); | |
| 116 m_layer.clear(); | |
| 117 Vector<MailboxInfo>::iterator mailboxInfo; | |
| 118 for (mailboxInfo = m_mailboxes.begin(); mailboxInfo < m_mailboxes.end(); mai
lboxInfo++) { | |
| 119 ASSERT(mailboxInfo->m_status != MailboxInUse); | |
| 120 if (mailboxInfo->m_status == MailboxReleased) { | |
| 121 if (mailboxInfo->m_mailbox.syncPoint) { | |
| 122 context()->waitSyncPoint(mailboxInfo->m_mailbox.syncPoint); | |
| 123 mailboxInfo->m_mailbox.syncPoint = 0; | |
| 124 } | |
| 125 // Invalidate texture state in case the compositor altered it since
the copy-on-write. | |
| 126 mailboxInfo->m_image->getTexture()->invalidateCachedState(); | |
| 127 } | |
| 128 } | |
| 129 m_mailboxes.clear(); | |
| 130 } | |
| 131 | |
| 132 void Canvas2DLayerBridge::destroy() | |
| 133 { | |
| 134 ASSERT(!m_destructionInProgress); | |
| 135 m_destructionInProgress = true; | |
| 136 GraphicsLayer::unregisterContentsLayer(m_layer->layer()); | |
| 137 m_canvas->setNotificationClient(0); | |
| 138 m_layer->clearTexture(); | |
| 139 Canvas2DLayerManager::get().layerToBeDestroyed(this); | |
| 140 // Orphaning the layer is required to trigger the recration of a new layer | |
| 141 // in the case where destruction is caused by a canvas resize. Test: | |
| 142 // virtual/gpu/fast/canvas/canvas-resize-after-paint-without-layout.html | |
| 143 m_layer->layer()->removeFromParent(); | |
| 144 } | |
| 145 | |
| 146 void Canvas2DLayerBridge::limitPendingFrames() | |
| 147 { | |
| 148 ASSERT(!m_destructionInProgress); | |
| 149 if (m_didRecordDrawCommand) { | |
| 150 m_framesPending++; | |
| 151 m_didRecordDrawCommand = false; | |
| 152 if (m_framesPending > 1) { | |
| 153 // Turn on the rate limiter if this layer tends to accumulate a | |
| 154 // non-discardable multi-frame backlog of draw commands. | |
| 155 setRateLimitingEnabled(true); | |
| 156 } | |
| 157 if (m_rateLimitingEnabled) { | |
| 158 flush(); | |
| 159 } | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 void Canvas2DLayerBridge::prepareForDraw() | |
| 164 { | |
| 165 ASSERT(!m_destructionInProgress); | |
| 166 ASSERT(m_layer); | |
| 167 if (!isValid()) { | |
| 168 if (m_canvas) { | |
| 169 // drop pending commands because there is no surface to draw to | |
| 170 m_canvas->silentFlush(); | |
| 171 } | |
| 172 return; | |
| 173 } | |
| 174 m_context->makeContextCurrent(); | |
| 175 } | |
| 176 | |
| 177 void Canvas2DLayerBridge::storageAllocatedForRecordingChanged(size_t bytesAlloca
ted) | |
| 178 { | |
| 179 ASSERT(!m_destructionInProgress); | |
| 180 intptr_t delta = (intptr_t)bytesAllocated - (intptr_t)m_bytesAllocated; | |
| 181 m_bytesAllocated = bytesAllocated; | |
| 182 Canvas2DLayerManager::get().layerAllocatedStorageChanged(this, delta); | |
| 183 } | |
| 184 | |
| 185 size_t Canvas2DLayerBridge::storageAllocatedForRecording() | |
| 186 { | |
| 187 ASSERT(!m_destructionInProgress); | |
| 188 return m_canvas->storageAllocatedForRecording(); | |
| 189 } | |
| 190 | |
| 191 void Canvas2DLayerBridge::flushedDrawCommands() | |
| 192 { | |
| 193 ASSERT(!m_destructionInProgress); | |
| 194 storageAllocatedForRecordingChanged(storageAllocatedForRecording()); | |
| 195 m_framesPending = 0; | |
| 196 } | |
| 197 | |
| 198 void Canvas2DLayerBridge::skippedPendingDrawCommands() | |
| 199 { | |
| 200 ASSERT(!m_destructionInProgress); | |
| 201 // Stop triggering the rate limiter if SkDeferredCanvas is detecting | |
| 202 // and optimizing overdraw. | |
| 203 setRateLimitingEnabled(false); | |
| 204 flushedDrawCommands(); | |
| 205 } | |
| 206 | |
| 207 void Canvas2DLayerBridge::setRateLimitingEnabled(bool enabled) | |
| 208 { | |
| 209 ASSERT(!m_destructionInProgress || !enabled); | |
| 210 if (m_rateLimitingEnabled != enabled) { | |
| 211 m_rateLimitingEnabled = enabled; | |
| 212 m_layer->setRateLimitContext(m_rateLimitingEnabled); | |
| 213 } | |
| 214 } | |
| 215 | |
| 216 size_t Canvas2DLayerBridge::freeMemoryIfPossible(size_t bytesToFree) | |
| 217 { | |
| 218 ASSERT(!m_destructionInProgress); | |
| 219 size_t bytesFreed = m_canvas->freeMemoryIfPossible(bytesToFree); | |
| 220 if (bytesFreed) | |
| 221 Canvas2DLayerManager::get().layerAllocatedStorageChanged(this, -((intptr
_t)bytesFreed)); | |
| 222 m_bytesAllocated -= bytesFreed; | |
| 223 return bytesFreed; | |
| 224 } | |
| 225 | |
| 226 void Canvas2DLayerBridge::flush() | |
| 227 { | |
| 228 ASSERT(!m_destructionInProgress); | |
| 229 if (m_canvas->hasPendingCommands()) { | |
| 230 TRACE_EVENT0("cc", "Canvas2DLayerBridge::flush"); | |
| 231 m_canvas->flush(); | |
| 232 } | |
| 233 } | |
| 234 | |
| 235 WebGraphicsContext3D* Canvas2DLayerBridge::context() | |
| 236 { | |
| 237 // Check on m_layer is necessary because context() may be called during | |
| 238 // the destruction of m_layer | |
| 239 if (m_layer) { | |
| 240 isValid(); // To ensure rate limiter is disabled if context is lost. | |
| 241 } | |
| 242 return m_context->webContext(); | |
| 243 } | |
| 244 | |
| 245 bool Canvas2DLayerBridge::isValid() | |
| 246 { | |
| 247 ASSERT(m_layer); | |
| 248 if (m_destructionInProgress) | |
| 249 return false; | |
| 250 if (m_context->webContext()->isContextLost() || !m_surfaceIsValid) { | |
| 251 // Attempt to recover. | |
| 252 m_layer->clearTexture(); | |
| 253 m_mailboxes.clear(); | |
| 254 RefPtr<GraphicsContext3D> sharedContext = SharedGraphicsContext3D::get()
; | |
| 255 if (!sharedContext || sharedContext->webContext()->isContextLost()) { | |
| 256 m_surfaceIsValid = false; | |
| 257 } else { | |
| 258 m_context = sharedContext; | |
| 259 IntSize size(m_canvas->getTopDevice()->width(), m_canvas->getTopDevi
ce()->height()); | |
| 260 SkAutoTUnref<SkSurface> surface(createSurface(m_context.get(), size,
m_msaaSampleCount)); | |
| 261 if (surface.get()) { | |
| 262 m_canvas->setSurface(surface.get()); | |
| 263 m_surfaceIsValid = true; | |
| 264 // FIXME: draw sad canvas picture into new buffer crbug.com/2438
42 | |
| 265 } else { | |
| 266 // Surface allocation failed. Set m_surfaceIsValid to false to | |
| 267 // trigger subsequent retry. | |
| 268 m_surfaceIsValid = false; | |
| 269 } | |
| 270 } | |
| 271 } | |
| 272 if (!m_surfaceIsValid) | |
| 273 setRateLimitingEnabled(false); | |
| 274 return m_surfaceIsValid; | |
| 275 } | |
| 276 | |
| 277 bool Canvas2DLayerBridge::prepareMailbox(blink::WebExternalTextureMailbox* outMa
ilbox, blink::WebExternalBitmap* bitmap) | |
| 278 { | |
| 279 if (bitmap) { | |
| 280 // Using accelerated 2d canvas with software renderer, which | |
| 281 // should only happen in tests that use fake graphics contexts. | |
| 282 // In this case, we do not care about producing any results for | |
| 283 // compositing. | |
| 284 m_canvas->silentFlush(); | |
| 285 return false; | |
| 286 } | |
| 287 if (!isValid()) | |
| 288 return false; | |
| 289 // Release to skia textures that were previouosly released by the | |
| 290 // compositor. We do this before acquiring the next snapshot in | |
| 291 // order to cap maximum gpu memory consumption. | |
| 292 m_context->makeContextCurrent(); | |
| 293 flush(); | |
| 294 Vector<MailboxInfo>::iterator mailboxInfo; | |
| 295 for (mailboxInfo = m_mailboxes.begin(); mailboxInfo < m_mailboxes.end(); mai
lboxInfo++) { | |
| 296 if (mailboxInfo->m_status == MailboxReleased) { | |
| 297 if (mailboxInfo->m_mailbox.syncPoint) { | |
| 298 context()->waitSyncPoint(mailboxInfo->m_mailbox.syncPoint); | |
| 299 mailboxInfo->m_mailbox.syncPoint = 0; | |
| 300 } | |
| 301 // Invalidate texture state in case the compositor altered it since
the copy-on-write. | |
| 302 mailboxInfo->m_image->getTexture()->invalidateCachedState(); | |
| 303 mailboxInfo->m_image.reset(0); | |
| 304 mailboxInfo->m_status = MailboxAvailable; | |
| 305 } | |
| 306 } | |
| 307 SkAutoTUnref<SkImage> image(m_canvas->newImageSnapshot()); | |
| 308 // Early exit if canvas was not drawn to since last prepareMailbox | |
| 309 if (image->uniqueID() == m_lastImageId) | |
| 310 return false; | |
| 311 m_lastImageId = image->uniqueID(); | |
| 312 | |
| 313 mailboxInfo = createMailboxInfo(); | |
| 314 mailboxInfo->m_status = MailboxInUse; | |
| 315 mailboxInfo->m_image.swap(&image); | |
| 316 // Because of texture sharing with the compositor, we must invalidate | |
| 317 // the state cached in skia so that the deferred copy on write | |
| 318 // in SkSurface_Gpu does not make any false assumptions. | |
| 319 mailboxInfo->m_image->getTexture()->invalidateCachedState(); | |
| 320 | |
| 321 ASSERT(mailboxInfo->m_mailbox.syncPoint == 0); | |
| 322 ASSERT(mailboxInfo->m_image.get()); | |
| 323 ASSERT(mailboxInfo->m_image->getTexture()); | |
| 324 | |
| 325 m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, mailboxInfo->m_image->
getTexture()->getTextureHandle()); | |
| 326 m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::T
EXTURE_MAG_FILTER, GraphicsContext3D::LINEAR); | |
| 327 m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::T
EXTURE_MIN_FILTER, GraphicsContext3D::LINEAR); | |
| 328 m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::T
EXTURE_WRAP_S, GraphicsContext3D::CLAMP_TO_EDGE); | |
| 329 m_context->texParameteri(GraphicsContext3D::TEXTURE_2D, GraphicsContext3D::T
EXTURE_WRAP_T, GraphicsContext3D::CLAMP_TO_EDGE); | |
| 330 context()->produceTextureCHROMIUM(GraphicsContext3D::TEXTURE_2D, mailboxInfo
->m_mailbox.name); | |
| 331 context()->flush(); | |
| 332 mailboxInfo->m_mailbox.syncPoint = context()->insertSyncPoint(); | |
| 333 m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, 0); | |
| 334 // Because we are changing the texture binding without going through skia, | |
| 335 // we must dirty the context. | |
| 336 m_context->grContext()->resetContext(kTextureBinding_GrGLBackendState); | |
| 337 | |
| 338 // set m_parentLayerBridge to make sure 'this' stays alive as long as it has | |
| 339 // live mailboxes | |
| 340 ASSERT(!mailboxInfo->m_parentLayerBridge); | |
| 341 mailboxInfo->m_parentLayerBridge = this; | |
| 342 *outMailbox = mailboxInfo->m_mailbox; | |
| 343 return true; | |
| 344 } | |
| 345 | |
| 346 Canvas2DLayerBridge::MailboxInfo* Canvas2DLayerBridge::createMailboxInfo() { | |
| 347 ASSERT(!m_destructionInProgress); | |
| 348 MailboxInfo* mailboxInfo; | |
| 349 for (mailboxInfo = m_mailboxes.begin(); mailboxInfo < m_mailboxes.end(); mai
lboxInfo++) { | |
| 350 if (mailboxInfo->m_status == MailboxAvailable) { | |
| 351 return mailboxInfo; | |
| 352 } | |
| 353 } | |
| 354 | |
| 355 // No available mailbox: create one. | |
| 356 m_mailboxes.grow(m_mailboxes.size() + 1); | |
| 357 mailboxInfo = &m_mailboxes.last(); | |
| 358 context()->genMailboxCHROMIUM(mailboxInfo->m_mailbox.name); | |
| 359 // Worst case, canvas is triple buffered. More than 3 active mailboxes | |
| 360 // means there is a problem. | |
| 361 // For the single-threaded case, this value needs to be at least | |
| 362 // kMaxSwapBuffersPending+1 (in render_widget.h). | |
| 363 // Because of crbug.com/247874, it needs to be kMaxSwapBuffersPending+2. | |
| 364 // TODO(piman): fix this. | |
| 365 ASSERT(m_mailboxes.size() <= 4); | |
| 366 ASSERT(mailboxInfo < m_mailboxes.end()); | |
| 367 return mailboxInfo; | |
| 368 } | |
| 369 | |
| 370 void Canvas2DLayerBridge::mailboxReleased(const blink::WebExternalTextureMailbox
& mailbox) | |
| 371 { | |
| 372 Vector<MailboxInfo>::iterator mailboxInfo; | |
| 373 for (mailboxInfo = m_mailboxes.begin(); mailboxInfo < m_mailboxes.end(); mai
lboxInfo++) { | |
| 374 if (!memcmp(mailboxInfo->m_mailbox.name, mailbox.name, sizeof(mailbox.na
me))) { | |
| 375 mailboxInfo->m_mailbox.syncPoint = mailbox.syncPoint; | |
| 376 ASSERT(mailboxInfo->m_status == MailboxInUse); | |
| 377 mailboxInfo->m_status = MailboxReleased; | |
| 378 // Trigger Canvas2DLayerBridge self-destruction if this is the | |
| 379 // last live mailbox and the layer bridge is not externally | |
| 380 // referenced. | |
| 381 ASSERT(mailboxInfo->m_parentLayerBridge.get() == this); | |
| 382 mailboxInfo->m_parentLayerBridge.clear(); | |
| 383 return; | |
| 384 } | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 blink::WebLayer* Canvas2DLayerBridge::layer() | |
| 389 { | |
| 390 ASSERT(m_layer); | |
| 391 return m_layer->layer(); | |
| 392 } | |
| 393 | |
| 394 void Canvas2DLayerBridge::contextAcquired() | |
| 395 { | |
| 396 ASSERT(!m_destructionInProgress); | |
| 397 Canvas2DLayerManager::get().layerDidDraw(this); | |
| 398 m_didRecordDrawCommand = true; | |
| 399 } | |
| 400 | |
| 401 unsigned Canvas2DLayerBridge::backBufferTexture() | |
| 402 { | |
| 403 ASSERT(!m_destructionInProgress); | |
| 404 if (!isValid()) | |
| 405 return 0; | |
| 406 contextAcquired(); | |
| 407 m_canvas->flush(); | |
| 408 m_context->flush(); | |
| 409 GrRenderTarget* renderTarget = reinterpret_cast<GrRenderTarget*>(m_canvas->g
etDevice()->accessRenderTarget()); | |
| 410 if (renderTarget) { | |
| 411 return renderTarget->asTexture()->getTextureHandle(); | |
| 412 } | |
| 413 return 0; | |
| 414 } | |
| 415 | |
| 416 Canvas2DLayerBridge::MailboxInfo::MailboxInfo(const MailboxInfo& other) { | |
| 417 // This copy constructor should only be used for Vector reallocation | |
| 418 // Assuming 'other' is to be destroyed, we swap m_image ownership | |
| 419 // rather than do a refcount dance. | |
| 420 memcpy(&m_mailbox, &other.m_mailbox, sizeof(m_mailbox)); | |
| 421 m_image.swap(const_cast<SkAutoTUnref<SkImage>*>(&other.m_image)); | |
| 422 m_status = other.m_status; | |
| 423 } | |
| 424 | |
| 425 } | |
| OLD | NEW |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk