src/gpu/command_buffer/service/in_process_command_buffer.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/command_buffer/service/in_process_command_buffer.h"
   6
   7 #include <queue>
   8 #include <set>
   9 #include <utility>
  10
  11 #include <GLES2/gl2.h>
  12 #ifndef GL_GLEXT_PROTOTYPES
  13 #define GL_GLEXT_PROTOTYPES 1
  14 #endif
  15 #include <GLES2/gl2ext.h>
  16 #include <GLES2/gl2extchromium.h>
  17
  18 #include "base/bind.h"
  19 #include "base/bind_helpers.h"
  20 #include "base/lazy_instance.h"
  21 #include "base/logging.h"
  22 #include "base/memory/weak_ptr.h"
  23 #include "base/message_loop/message_loop_proxy.h"
  24 #include "base/sequence_checker.h"
  25 #include "base/synchronization/condition_variable.h"
  26 #include "base/threading/thread.h"
  27 #include "gpu/command_buffer/client/gpu_memory_buffer_factory.h"
  28 #include "gpu/command_buffer/service/command_buffer_service.h"
  29 #include "gpu/command_buffer/service/context_group.h"
  30 #include "gpu/command_buffer/service/gl_context_virtual.h"
  31 #include "gpu/command_buffer/service/gpu_control_service.h"
  32 #include "gpu/command_buffer/service/gpu_scheduler.h"
  33 #include "gpu/command_buffer/service/image_manager.h"
  34 #include "gpu/command_buffer/service/mailbox_manager.h"
  35 #include "gpu/command_buffer/service/transfer_buffer_manager.h"
  36 #include "ui/gfx/size.h"
  37 #include "ui/gl/gl_context.h"
  38 #include "ui/gl/gl_image.h"
  39 #include "ui/gl/gl_share_group.h"
  40
  41 #if defined(OS_ANDROID)
  42 #include "gpu/command_buffer/service/stream_texture_manager_in_process_android.h"
  43 #include "ui/gl/android/surface_texture.h"
  44 #endif
  45
  46 namespace gpu {
  47
  48 namespace {
  49
  50 static GpuMemoryBufferFactory* g_gpu_memory_buffer_factory = NULL;
  51
  52 template <typename T>
  53 static void RunTaskWithResult(base::Callback<T(void)> task,
  54                               T* result,
  55                               base::WaitableEvent* completion) {
  56   *result = task.Run();
  57   completion->Signal();
  58 }
  59
  60 class GpuInProcessThread
  61     : public base::Thread,
  62       public InProcessCommandBuffer::Service,
  63       public base::RefCountedThreadSafe<GpuInProcessThread> {
  64  public:
  65   GpuInProcessThread();
  66
  67   virtual void AddRef() const OVERRIDE {
  68     base::RefCountedThreadSafe<GpuInProcessThread>::AddRef();
  69   }
  70   virtual void Release() const OVERRIDE {
  71     base::RefCountedThreadSafe<GpuInProcessThread>::Release();
  72   }
  73
  74   virtual void ScheduleTask(const base::Closure& task) OVERRIDE;
  75   virtual void ScheduleIdleWork(const base::Closure& callback) OVERRIDE;
  76   virtual bool UseVirtualizedGLContexts() OVERRIDE { return false; }
  77   virtual scoped_refptr<gles2::ShaderTranslatorCache> shader_translator_cache()
  78       OVERRIDE;
  79
  80  private:
  81   virtual ~GpuInProcessThread();
  82   friend class base::RefCountedThreadSafe<GpuInProcessThread>;
  83
  84   scoped_refptr<gpu::gles2::ShaderTranslatorCache> shader_translator_cache_;
  85   DISALLOW_COPY_AND_ASSIGN(GpuInProcessThread);
  86 };
  87
  88 GpuInProcessThread::GpuInProcessThread() : base::Thread("GpuThread") {
  89   Start();
  90 }
  91
  92 GpuInProcessThread::~GpuInProcessThread() {
  93   Stop();
  94 }
  95
  96 void GpuInProcessThread::ScheduleTask(const base::Closure& task) {
  97   message_loop()->PostTask(FROM_HERE, task);
  98 }
  99
 100 void GpuInProcessThread::ScheduleIdleWork(const base::Closure& callback) {
 101   message_loop()->PostDelayedTask(
 102       FROM_HERE, callback, base::TimeDelta::FromMilliseconds(5));
 103 }
 104
 105 scoped_refptr<gles2::ShaderTranslatorCache>
 106 GpuInProcessThread::shader_translator_cache() {
 107   if (!shader_translator_cache_.get())
 108     shader_translator_cache_ = new gpu::gles2::ShaderTranslatorCache;
 109   return shader_translator_cache_;
 110 }
 111
 112 base::LazyInstance<std::set<InProcessCommandBuffer*> > default_thread_clients_ =
 113     LAZY_INSTANCE_INITIALIZER;
 114 base::LazyInstance<base::Lock> default_thread_clients_lock_ =
 115     LAZY_INSTANCE_INITIALIZER;
 116
 117 class ScopedEvent {
 118  public:
 119   ScopedEvent(base::WaitableEvent* event) : event_(event) {}
 120   ~ScopedEvent() { event_->Signal(); }
 121
 122  private:
 123   base::WaitableEvent* event_;
 124 };
 125
 126 class SyncPointManager {
 127  public:
 128   SyncPointManager();
 129   ~SyncPointManager();
 130
 131   uint32 GenerateSyncPoint();
 132   void RetireSyncPoint(uint32 sync_point);
 133
 134   bool IsSyncPointPassed(uint32 sync_point);
 135   void WaitSyncPoint(uint32 sync_point);
 136
 137 private:
 138   // This lock protects access to pending_sync_points_ and next_sync_point_ and
 139   // is used with the ConditionVariable to signal when a sync point is retired.
 140   base::Lock lock_;
 141   std::set<uint32> pending_sync_points_;
 142   uint32 next_sync_point_;
 143   base::ConditionVariable cond_var_;
 144 };
 145
 146 SyncPointManager::SyncPointManager() : next_sync_point_(1), cond_var_(&lock_) {}
 147
 148 SyncPointManager::~SyncPointManager() {
 149   DCHECK_EQ(pending_sync_points_.size(), 0U);
 150 }
 151
 152 uint32 SyncPointManager::GenerateSyncPoint() {
 153   base::AutoLock lock(lock_);
 154   uint32 sync_point = next_sync_point_++;
 155   DCHECK_EQ(pending_sync_points_.count(sync_point), 0U);
 156   pending_sync_points_.insert(sync_point);
 157   return sync_point;
 158 }
 159
 160 void SyncPointManager::RetireSyncPoint(uint32 sync_point) {
 161   base::AutoLock lock(lock_);
 162   DCHECK(pending_sync_points_.count(sync_point));
 163   pending_sync_points_.erase(sync_point);
 164   cond_var_.Broadcast();
 165 }
 166
 167 bool SyncPointManager::IsSyncPointPassed(uint32 sync_point) {
 168   base::AutoLock lock(lock_);
 169   return pending_sync_points_.count(sync_point) == 0;
 170 }
 171
 172 void SyncPointManager::WaitSyncPoint(uint32 sync_point) {
 173   base::AutoLock lock(lock_);
 174   while (pending_sync_points_.count(sync_point)) {
 175     cond_var_.Wait();
 176   }
 177 }
 178
 179 base::LazyInstance<SyncPointManager> g_sync_point_manager =
 180     LAZY_INSTANCE_INITIALIZER;
 181
 182 bool WaitSyncPoint(uint32 sync_point) {
 183   g_sync_point_manager.Get().WaitSyncPoint(sync_point);
 184   return true;
 185 }
 186
 187 }  // anonyous namespace
 188
 189 InProcessCommandBuffer::Service::Service() {}
 190
 191 InProcessCommandBuffer::Service::~Service() {}
 192
 193 scoped_refptr<InProcessCommandBuffer::Service>
 194 InProcessCommandBuffer::GetDefaultService() {
 195   base::AutoLock lock(default_thread_clients_lock_.Get());
 196   scoped_refptr<Service> service;
 197   if (!default_thread_clients_.Get().empty()) {
 198     InProcessCommandBuffer* other = *default_thread_clients_.Get().begin();
 199     service = other->service_;
 200     DCHECK(service.get());
 201   } else {
 202     service = new GpuInProcessThread;
 203   }
 204   return service;
 205 }
 206
 207 InProcessCommandBuffer::InProcessCommandBuffer(
 208     const scoped_refptr<Service>& service)
 209     : context_lost_(false),
 210       last_put_offset_(-1),
 211       flush_event_(false, false),
 212       service_(service.get() ? service : GetDefaultService()),
 213       gpu_thread_weak_ptr_factory_(this) {
 214   if (!service) {
 215     base::AutoLock lock(default_thread_clients_lock_.Get());
 216     default_thread_clients_.Get().insert(this);
 217   }
 218 }
 219
 220 InProcessCommandBuffer::~InProcessCommandBuffer() {
 221   Destroy();
 222   base::AutoLock lock(default_thread_clients_lock_.Get());
 223   default_thread_clients_.Get().erase(this);
 224 }
 225
 226 void InProcessCommandBuffer::OnResizeView(gfx::Size size, float scale_factor) {
 227   CheckSequencedThread();
 228   DCHECK(!surface_->IsOffscreen());
 229   surface_->Resize(size);
 230 }
 231
 232 bool InProcessCommandBuffer::MakeCurrent() {
 233   CheckSequencedThread();
 234   command_buffer_lock_.AssertAcquired();
 235
 236   if (!context_lost_ && decoder_->MakeCurrent())
 237     return true;
 238   DLOG(ERROR) << "Context lost because MakeCurrent failed.";
 239   command_buffer_->SetContextLostReason(decoder_->GetContextLostReason());
 240   command_buffer_->SetParseError(gpu::error::kLostContext);
 241   return false;
 242 }
 243
 244 void InProcessCommandBuffer::PumpCommands() {
 245   CheckSequencedThread();
 246   command_buffer_lock_.AssertAcquired();
 247
 248   if (!MakeCurrent())
 249     return;
 250
 251   gpu_scheduler_->PutChanged();
 252 }
 253
 254 bool InProcessCommandBuffer::GetBufferChanged(int32 transfer_buffer_id) {
 255   CheckSequencedThread();
 256   command_buffer_lock_.AssertAcquired();
 257   command_buffer_->SetGetBuffer(transfer_buffer_id);
 258   return true;
 259 }
 260
 261 bool InProcessCommandBuffer::Initialize(
 262     scoped_refptr<gfx::GLSurface> surface,
 263     bool is_offscreen,
 264     gfx::AcceleratedWidget window,
 265     const gfx::Size& size,
 266     const std::vector<int32>& attribs,
 267     gfx::GpuPreference gpu_preference,
 268     const base::Closure& context_lost_callback,
 269     InProcessCommandBuffer* share_group) {
 270   DCHECK(!share_group || service_ == share_group->service_);
 271   context_lost_callback_ = WrapCallback(context_lost_callback);
 272
 273   if (surface) {
 274     // GPU thread must be the same as client thread due to GLSurface not being
 275     // thread safe.
 276     sequence_checker_.reset(new base::SequenceChecker);
 277     surface_ = surface;
 278   }
 279
 280   gpu::Capabilities capabilities;
 281   InitializeOnGpuThreadParams params(is_offscreen,
 282                                      window,
 283                                      size,
 284                                      attribs,
 285                                      gpu_preference,
 286                                      &capabilities,
 287                                      share_group);
 288
 289   base::Callback<bool(void)> init_task =
 290       base::Bind(&InProcessCommandBuffer::InitializeOnGpuThread,
 291                  base::Unretained(this),
 292                  params);
 293
 294   base::WaitableEvent completion(true, false);
 295   bool result = false;
 296   QueueTask(
 297       base::Bind(&RunTaskWithResult<bool>, init_task, &result, &completion));
 298   completion.Wait();
 299
 300   if (result) {
 301     capabilities_ = capabilities;
 302     capabilities_.map_image =
 303         capabilities_.map_image && g_gpu_memory_buffer_factory;
 304   }
 305   return result;
 306 }
 307
 308 bool InProcessCommandBuffer::InitializeOnGpuThread(
 309     const InitializeOnGpuThreadParams& params) {
 310   CheckSequencedThread();
 311   gpu_thread_weak_ptr_ = gpu_thread_weak_ptr_factory_.GetWeakPtr();
 312
 313   DCHECK(params.size.width() >= 0 && params.size.height() >= 0);
 314
 315   TransferBufferManager* manager = new TransferBufferManager();
 316   transfer_buffer_manager_.reset(manager);
 317   manager->Initialize();
 318
 319   scoped_ptr<CommandBufferService> command_buffer(
 320       new CommandBufferService(transfer_buffer_manager_.get()));
 321   command_buffer->SetPutOffsetChangeCallback(base::Bind(
 322       &InProcessCommandBuffer::PumpCommands, gpu_thread_weak_ptr_));
 323   command_buffer->SetParseErrorCallback(base::Bind(
 324       &InProcessCommandBuffer::OnContextLost, gpu_thread_weak_ptr_));
 325
 326   if (!command_buffer->Initialize()) {
 327     LOG(ERROR) << "Could not initialize command buffer.";
 328     DestroyOnGpuThread();
 329     return false;
 330   }
 331
 332   gl_share_group_ = params.context_group
 333                         ? params.context_group->gl_share_group_.get()
 334                         : new gfx::GLShareGroup;
 335
 336 #if defined(OS_ANDROID)
 337   stream_texture_manager_.reset(new StreamTextureManagerInProcess);
 338 #endif
 339
 340   bool bind_generates_resource = false;
 341   decoder_.reset(gles2::GLES2Decoder::Create(
 342       params.context_group
 343           ? params.context_group->decoder_->GetContextGroup()
 344           : new gles2::ContextGroup(NULL,
 345                                     NULL,
 346                                     NULL,
 347                                     service_->shader_translator_cache(),
 348                                     NULL,
 349                                     bind_generates_resource)));
 350
 351   gpu_scheduler_.reset(
 352       new GpuScheduler(command_buffer.get(), decoder_.get(), decoder_.get()));
 353   command_buffer->SetGetBufferChangeCallback(base::Bind(
 354       &GpuScheduler::SetGetBuffer, base::Unretained(gpu_scheduler_.get())));
 355   command_buffer_ = command_buffer.Pass();
 356
 357   decoder_->set_engine(gpu_scheduler_.get());
 358
 359   if (!surface_) {
 360     if (params.is_offscreen)
 361       surface_ = gfx::GLSurface::CreateOffscreenGLSurface(params.size);
 362     else
 363       surface_ = gfx::GLSurface::CreateViewGLSurface(params.window);
 364   }
 365
 366   if (!surface_.get()) {
 367     LOG(ERROR) << "Could not create GLSurface.";
 368     DestroyOnGpuThread();
 369     return false;
 370   }
 371
 372   if (service_->UseVirtualizedGLContexts()) {
 373     context_ = gl_share_group_->GetSharedContext();
 374     if (!context_.get()) {
 375       context_ = gfx::GLContext::CreateGLContext(
 376           gl_share_group_.get(), surface_.get(), params.gpu_preference);
 377       gl_share_group_->SetSharedContext(context_.get());
 378     }
 379
 380     context_ = new GLContextVirtual(
 381         gl_share_group_.get(), context_.get(), decoder_->AsWeakPtr());
 382     if (context_->Initialize(surface_.get(), params.gpu_preference)) {
 383       VLOG(1) << "Created virtual GL context.";
 384     } else {
 385       context_ = NULL;
 386     }
 387   } else {
 388     context_ = gfx::GLContext::CreateGLContext(
 389         gl_share_group_.get(), surface_.get(), params.gpu_preference);
 390   }
 391
 392   if (!context_.get()) {
 393     LOG(ERROR) << "Could not create GLContext.";
 394     DestroyOnGpuThread();
 395     return false;
 396   }
 397
 398   if (!context_->MakeCurrent(surface_.get())) {
 399     LOG(ERROR) << "Could not make context current.";
 400     DestroyOnGpuThread();
 401     return false;
 402   }
 403
 404   gles2::DisallowedFeatures disallowed_features;
 405   disallowed_features.gpu_memory_manager = true;
 406   if (!decoder_->Initialize(surface_,
 407                             context_,
 408                             params.is_offscreen,
 409                             params.size,
 410                             disallowed_features,
 411                             params.attribs)) {
 412     LOG(ERROR) << "Could not initialize decoder.";
 413     DestroyOnGpuThread();
 414     return false;
 415   }
 416   *params.capabilities = decoder_->GetCapabilities();
 417
 418   gpu_control_.reset(
 419       new GpuControlService(decoder_->GetContextGroup()->image_manager(),
 420                             decoder_->GetQueryManager()));
 421
 422   if (!params.is_offscreen) {
 423     decoder_->SetResizeCallback(base::Bind(
 424         &InProcessCommandBuffer::OnResizeView, gpu_thread_weak_ptr_));
 425   }
 426   decoder_->SetWaitSyncPointCallback(base::Bind(&WaitSyncPoint));
 427
 428   return true;
 429 }
 430
 431 void InProcessCommandBuffer::Destroy() {
 432   CheckSequencedThread();
 433
 434   base::WaitableEvent completion(true, false);
 435   bool result = false;
 436   base::Callback<bool(void)> destroy_task = base::Bind(
 437       &InProcessCommandBuffer::DestroyOnGpuThread, base::Unretained(this));
 438   QueueTask(
 439       base::Bind(&RunTaskWithResult<bool>, destroy_task, &result, &completion));
 440   completion.Wait();
 441 }
 442
 443 bool InProcessCommandBuffer::DestroyOnGpuThread() {
 444   CheckSequencedThread();
 445   gpu_thread_weak_ptr_factory_.InvalidateWeakPtrs();
 446   command_buffer_.reset();
 447   // Clean up GL resources if possible.
 448   bool have_context = context_ && context_->MakeCurrent(surface_);
 449   if (decoder_) {
 450     decoder_->Destroy(have_context);
 451     decoder_.reset();
 452   }
 453   context_ = NULL;
 454   surface_ = NULL;
 455   gl_share_group_ = NULL;
 456 #if defined(OS_ANDROID)
 457   stream_texture_manager_.reset();
 458 #endif
 459
 460   return true;
 461 }
 462
 463 void InProcessCommandBuffer::CheckSequencedThread() {
 464   DCHECK(!sequence_checker_ ||
 465          sequence_checker_->CalledOnValidSequencedThread());
 466 }
 467
 468 void InProcessCommandBuffer::OnContextLost() {
 469   CheckSequencedThread();
 470   if (!context_lost_callback_.is_null()) {
 471     context_lost_callback_.Run();
 472     context_lost_callback_.Reset();
 473   }
 474
 475   context_lost_ = true;
 476 }
 477
 478 CommandBuffer::State InProcessCommandBuffer::GetStateFast() {
 479   CheckSequencedThread();
 480   base::AutoLock lock(state_after_last_flush_lock_);
 481   if (state_after_last_flush_.generation - last_state_.generation < 0x80000000U)
 482     last_state_ = state_after_last_flush_;
 483   return last_state_;
 484 }
 485
 486 CommandBuffer::State InProcessCommandBuffer::GetLastState() {
 487   CheckSequencedThread();
 488   return last_state_;
 489 }
 490
 491 int32 InProcessCommandBuffer::GetLastToken() {
 492   CheckSequencedThread();
 493   GetStateFast();
 494   return last_state_.token;
 495 }
 496
 497 void InProcessCommandBuffer::FlushOnGpuThread(int32 put_offset) {
 498   CheckSequencedThread();
 499   ScopedEvent handle_flush(&flush_event_);
 500   base::AutoLock lock(command_buffer_lock_);
 501   command_buffer_->Flush(put_offset);
 502   {
 503     // Update state before signaling the flush event.
 504     base::AutoLock lock(state_after_last_flush_lock_);
 505     state_after_last_flush_ = command_buffer_->GetLastState();
 506   }
 507   DCHECK((!error::IsError(state_after_last_flush_.error) && !context_lost_) ||
 508          (error::IsError(state_after_last_flush_.error) && context_lost_));
 509
 510   // If we've processed all pending commands but still have pending queries,
 511   // pump idle work until the query is passed.
 512   if (put_offset == state_after_last_flush_.get_offset &&
 513       gpu_scheduler_->HasMoreWork()) {
 514     service_->ScheduleIdleWork(
 515         base::Bind(&InProcessCommandBuffer::ScheduleMoreIdleWork,
 516                    gpu_thread_weak_ptr_));
 517   }
 518 }
 519
 520 void InProcessCommandBuffer::ScheduleMoreIdleWork() {
 521   CheckSequencedThread();
 522   base::AutoLock lock(command_buffer_lock_);
 523   if (gpu_scheduler_->HasMoreWork()) {
 524     gpu_scheduler_->PerformIdleWork();
 525     service_->ScheduleIdleWork(
 526         base::Bind(&InProcessCommandBuffer::ScheduleMoreIdleWork,
 527                    gpu_thread_weak_ptr_));
 528   }
 529 }
 530
 531 void InProcessCommandBuffer::Flush(int32 put_offset) {
 532   CheckSequencedThread();
 533   if (last_state_.error != gpu::error::kNoError)
 534     return;
 535
 536   if (last_put_offset_ == put_offset)
 537     return;
 538
 539   last_put_offset_ = put_offset;
 540   base::Closure task = base::Bind(&InProcessCommandBuffer::FlushOnGpuThread,
 541                                   gpu_thread_weak_ptr_,
 542                                   put_offset);
 543   QueueTask(task);
 544 }
 545
 546 void InProcessCommandBuffer::WaitForTokenInRange(int32 start, int32 end) {
 547   CheckSequencedThread();
 548   while (!InRange(start, end, GetLastToken()) &&
 549          last_state_.error == gpu::error::kNoError)
 550     flush_event_.Wait();
 551 }
 552
 553 void InProcessCommandBuffer::WaitForGetOffsetInRange(int32 start, int32 end) {
 554   CheckSequencedThread();
 555
 556   GetStateFast();
 557   while (!InRange(start, end, last_state_.get_offset) &&
 558          last_state_.error == gpu::error::kNoError) {
 559     flush_event_.Wait();
 560     GetStateFast();
 561   }
 562 }
 563
 564 void InProcessCommandBuffer::SetGetBuffer(int32 shm_id) {
 565   CheckSequencedThread();
 566   if (last_state_.error != gpu::error::kNoError)
 567     return;
 568
 569   {
 570     base::AutoLock lock(command_buffer_lock_);
 571     command_buffer_->SetGetBuffer(shm_id);
 572     last_put_offset_ = 0;
 573   }
 574   {
 575     base::AutoLock lock(state_after_last_flush_lock_);
 576     state_after_last_flush_ = command_buffer_->GetLastState();
 577   }
 578 }
 579
 580 scoped_refptr<Buffer> InProcessCommandBuffer::CreateTransferBuffer(size_t size,
 581                                                                    int32* id) {
 582   CheckSequencedThread();
 583   base::AutoLock lock(command_buffer_lock_);
 584   return command_buffer_->CreateTransferBuffer(size, id);
 585 }
 586
 587 void InProcessCommandBuffer::DestroyTransferBuffer(int32 id) {
 588   CheckSequencedThread();
 589   base::Closure task =
 590       base::Bind(&InProcessCommandBuffer::DestroyTransferBufferOnGputhread,
 591                  base::Unretained(this),
 592                  id);
 593
 594   QueueTask(task);
 595 }
 596
 597 void InProcessCommandBuffer::DestroyTransferBufferOnGputhread(int32 id) {
 598   base::AutoLock lock(command_buffer_lock_);
 599   command_buffer_->DestroyTransferBuffer(id);
 600 }
 601
 602 gpu::Capabilities InProcessCommandBuffer::GetCapabilities() {
 603   return capabilities_;
 604 }
 605
 606 gfx::GpuMemoryBuffer* InProcessCommandBuffer::CreateGpuMemoryBuffer(
 607     size_t width,
 608     size_t height,
 609     unsigned internalformat,
 610     unsigned usage,
 611     int32* id) {
 612   CheckSequencedThread();
 613
 614   *id = -1;
 615   linked_ptr<gfx::GpuMemoryBuffer> buffer =
 616       make_linked_ptr(g_gpu_memory_buffer_factory->CreateGpuMemoryBuffer(
 617           width, height, internalformat, usage));
 618   if (!buffer.get())
 619     return NULL;
 620
 621   static int32 next_id = 1;
 622   *id = next_id++;
 623
 624   base::Closure task = base::Bind(&GpuControlService::RegisterGpuMemoryBuffer,
 625                                   base::Unretained(gpu_control_.get()),
 626                                   *id,
 627                                   buffer->GetHandle(),
 628                                   width,
 629                                   height,
 630                                   internalformat);
 631
 632   QueueTask(task);
 633
 634   gpu_memory_buffers_[*id] = buffer;
 635   return buffer.get();
 636 }
 637
 638 void InProcessCommandBuffer::DestroyGpuMemoryBuffer(int32 id) {
 639   CheckSequencedThread();
 640   GpuMemoryBufferMap::iterator it = gpu_memory_buffers_.find(id);
 641   if (it != gpu_memory_buffers_.end())
 642     gpu_memory_buffers_.erase(it);
 643   base::Closure task = base::Bind(&GpuControlService::UnregisterGpuMemoryBuffer,
 644                                   base::Unretained(gpu_control_.get()),
 645                                   id);
 646
 647   QueueTask(task);
 648 }
 649
 650 uint32 InProcessCommandBuffer::InsertSyncPoint() {
 651   uint32 sync_point = g_sync_point_manager.Get().GenerateSyncPoint();
 652   QueueTask(base::Bind(&InProcessCommandBuffer::RetireSyncPointOnGpuThread,
 653                        base::Unretained(this),
 654                        sync_point));
 655   return sync_point;
 656 }
 657
 658 void InProcessCommandBuffer::RetireSyncPointOnGpuThread(uint32 sync_point) {
 659   gles2::MailboxManager* mailbox_manager =
 660       decoder_->GetContextGroup()->mailbox_manager();
 661   if (mailbox_manager->UsesSync() && MakeCurrent())
 662     mailbox_manager->PushTextureUpdates();
 663   g_sync_point_manager.Get().RetireSyncPoint(sync_point);
 664 }
 665
 666 void InProcessCommandBuffer::SignalSyncPoint(unsigned sync_point,
 667                                              const base::Closure& callback) {
 668   CheckSequencedThread();
 669   QueueTask(base::Bind(&InProcessCommandBuffer::SignalSyncPointOnGpuThread,
 670                        base::Unretained(this),
 671                        sync_point,
 672                        WrapCallback(callback)));
 673 }
 674
 675 void InProcessCommandBuffer::SignalSyncPointOnGpuThread(
 676     unsigned sync_point,
 677     const base::Closure& callback) {
 678   if (g_sync_point_manager.Get().IsSyncPointPassed(sync_point)) {
 679     callback.Run();
 680   } else {
 681     service_->ScheduleIdleWork(
 682         base::Bind(&InProcessCommandBuffer::SignalSyncPointOnGpuThread,
 683                    gpu_thread_weak_ptr_,
 684                    sync_point,
 685                    callback));
 686   }
 687 }
 688
 689 void InProcessCommandBuffer::SignalQuery(unsigned query,
 690                                          const base::Closure& callback) {
 691   CheckSequencedThread();
 692   QueueTask(base::Bind(&GpuControlService::SignalQuery,
 693                        base::Unretained(gpu_control_.get()),
 694                        query,
 695                        WrapCallback(callback)));
 696 }
 697
 698 void InProcessCommandBuffer::SetSurfaceVisible(bool visible) {}
 699
 700 void InProcessCommandBuffer::Echo(const base::Closure& callback) {
 701   QueueTask(WrapCallback(callback));
 702 }
 703
 704 uint32 InProcessCommandBuffer::CreateStreamTexture(uint32 texture_id) {
 705   base::WaitableEvent completion(true, false);
 706   uint32 stream_id = 0;
 707   base::Callback<uint32(void)> task =
 708       base::Bind(&InProcessCommandBuffer::CreateStreamTextureOnGpuThread,
 709                  base::Unretained(this),
 710                  texture_id);
 711   QueueTask(
 712       base::Bind(&RunTaskWithResult<uint32>, task, &stream_id, &completion));
 713   completion.Wait();
 714   return stream_id;
 715 }
 716
 717 uint32 InProcessCommandBuffer::CreateStreamTextureOnGpuThread(
 718     uint32 client_texture_id) {
 719 #if defined(OS_ANDROID)
 720   return stream_texture_manager_->CreateStreamTexture(
 721       client_texture_id, decoder_->GetContextGroup()->texture_manager());
 722 #else
 723   return 0;
 724 #endif
 725 }
 726
 727 gpu::error::Error InProcessCommandBuffer::GetLastError() {
 728   CheckSequencedThread();
 729   return last_state_.error;
 730 }
 731
 732 bool InProcessCommandBuffer::Initialize() {
 733   NOTREACHED();
 734   return false;
 735 }
 736
 737 namespace {
 738
 739 void PostCallback(const scoped_refptr<base::MessageLoopProxy>& loop,
 740                          const base::Closure& callback) {
 741   if (!loop->BelongsToCurrentThread()) {
 742     loop->PostTask(FROM_HERE, callback);
 743   } else {
 744     callback.Run();
 745   }
 746 }
 747
 748 void RunOnTargetThread(scoped_ptr<base::Closure> callback) {
 749   DCHECK(callback.get());
 750   callback->Run();
 751 }
 752
 753 }  // anonymous namespace
 754
 755 base::Closure InProcessCommandBuffer::WrapCallback(
 756     const base::Closure& callback) {
 757   // Make sure the callback gets deleted on the target thread by passing
 758   // ownership.
 759   scoped_ptr<base::Closure> scoped_callback(new base::Closure(callback));
 760   base::Closure callback_on_client_thread =
 761       base::Bind(&RunOnTargetThread, base::Passed(&scoped_callback));
 762   base::Closure wrapped_callback =
 763       base::Bind(&PostCallback, base::MessageLoopProxy::current(),
 764                  callback_on_client_thread);
 765   return wrapped_callback;
 766 }
 767
 768 #if defined(OS_ANDROID)
 769 scoped_refptr<gfx::SurfaceTexture>
 770 InProcessCommandBuffer::GetSurfaceTexture(uint32 stream_id) {
 771   DCHECK(stream_texture_manager_);
 772   return stream_texture_manager_->GetSurfaceTexture(stream_id);
 773 }
 774 #endif
 775
 776 // static
 777 void InProcessCommandBuffer::SetGpuMemoryBufferFactory(
 778     GpuMemoryBufferFactory* factory) {
 779   g_gpu_memory_buffer_factory = factory;
 780 }
 781
 782 }  // namespace gpu