content/browser/android/in_process/synchronous_compositor_factory_impl.cc

   1 // Copyright 2014 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 "content/browser/android/in_process/synchronous_compositor_factory_impl.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/observer_list.h"
   9 #include "base/sys_info.h"
  10 #include "base/thread_task_runner_handle.h"
  11 #include "content/browser/android/in_process/context_provider_in_process.h"
  12 #include "content/browser/android/in_process/synchronous_compositor_context_provider.h"
  13 #include "content/browser/android/in_process/synchronous_compositor_external_begin_frame_source.h"
  14 #include "content/browser/android/in_process/synchronous_compositor_impl.h"
  15 #include "content/browser/android/in_process/synchronous_compositor_output_surface.h"
  16 #include "content/browser/gpu/browser_gpu_memory_buffer_manager.h"
  17 #include "content/common/gpu/client/gpu_channel_host.h"
  18 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
  19 #include "content/gpu/in_process_gpu_thread.h"
  20 #include "content/public/browser/browser_thread.h"
  21 #include "content/public/browser/gpu_data_manager.h"
  22 #include "content/public/common/content_switches.h"
  23 #include "content/renderer/gpu/frame_swap_message_queue.h"
  24 #include "content/renderer/render_thread_impl.h"
  25 #include "gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.h"
  26 #include "gpu/command_buffer/client/gl_in_process_context.h"
  27 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
  28 #include "ui/gl/android/surface_texture.h"
  29 #include "ui/gl/gl_surface.h"
  30 #include "ui/gl/gl_surface_stub.h"
  31
  32 using cc_blink::ContextProviderWebContext;
  33 using gpu_blink::WebGraphicsContext3DImpl;
  34 using gpu_blink::WebGraphicsContext3DInProcessCommandBufferImpl;
  35
  36 namespace content {
  37
  38 namespace {
  39
  40 struct ContextHolder {
  41   scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl> command_buffer;
  42   gpu::GLInProcessContext* gl_in_process_context;
  43 };
  44
  45 blink::WebGraphicsContext3D::Attributes GetDefaultAttribs() {
  46   blink::WebGraphicsContext3D::Attributes attributes;
  47   attributes.antialias = false;
  48   attributes.depth = false;
  49   attributes.stencil = false;
  50   attributes.shareResources = true;
  51   attributes.noAutomaticFlushes = true;
  52
  53   return attributes;
  54 }
  55
  56 ContextHolder CreateContextHolder(
  57     const blink::WebGraphicsContext3D::Attributes& attributes,
  58     scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
  59     const gpu::GLInProcessContextSharedMemoryLimits& mem_limits,
  60     bool is_offscreen) {
  61   gpu::gles2::ContextCreationAttribHelper in_process_attribs;
  62   WebGraphicsContext3DImpl::ConvertAttributes(attributes, &in_process_attribs);
  63   in_process_attribs.lose_context_when_out_of_memory = true;
  64
  65   scoped_ptr<gpu::GLInProcessContext> context(gpu::GLInProcessContext::Create(
  66       service, NULL /* surface */, is_offscreen, gfx::kNullAcceleratedWidget,
  67       gfx::Size(1, 1), NULL /* share_context */, attributes.shareResources,
  68       in_process_attribs, gfx::PreferDiscreteGpu, mem_limits,
  69       BrowserGpuMemoryBufferManager::current(), nullptr));
  70
  71   gpu::GLInProcessContext* context_ptr = context.get();
  72
  73   ContextHolder holder;
  74   holder.command_buffer =
  75       scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>(
  76           WebGraphicsContext3DInProcessCommandBufferImpl::WrapContext(
  77               context.Pass(), attributes));
  78   holder.gl_in_process_context = context_ptr;
  79
  80   return holder;
  81 }
  82
  83 scoped_ptr<WebGraphicsContext3DCommandBufferImpl> CreateContext3D(
  84     int surface_id,
  85     const blink::WebGraphicsContext3D::Attributes& attributes,
  86     const content::WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits&
  87         mem_limits) {
  88   DCHECK(RenderThreadImpl::current());
  89   CauseForGpuLaunch cause =
  90       CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE;
  91   scoped_refptr<GpuChannelHost> gpu_channel_host(
  92       RenderThreadImpl::current()->EstablishGpuChannelSync(cause));
  93   CHECK(gpu_channel_host.get());
  94
  95   bool lose_context_when_out_of_memory = true;
  96   return make_scoped_ptr(new WebGraphicsContext3DCommandBufferImpl(
  97       surface_id, GURL(), gpu_channel_host.get(), attributes,
  98       lose_context_when_out_of_memory, mem_limits, NULL));
  99 }
 100
 101 }  // namespace
 102
 103 class SynchronousCompositorFactoryImpl::VideoContextProvider
 104     : public StreamTextureFactorySynchronousImpl::ContextProvider {
 105  public:
 106   VideoContextProvider(
 107       scoped_refptr<cc::ContextProvider> context_provider,
 108       gpu::GLInProcessContext* gl_in_process_context)
 109       : context_provider_(context_provider),
 110         gl_in_process_context_(gl_in_process_context) {
 111     context_provider_->BindToCurrentThread();
 112   }
 113
 114   scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
 115       uint32 stream_id) override {
 116     return gl_in_process_context_->GetSurfaceTexture(stream_id);
 117   }
 118
 119   gpu::gles2::GLES2Interface* ContextGL() override {
 120     return context_provider_->ContextGL();
 121   }
 122
 123   void AddObserver(StreamTextureFactoryContextObserver* obs) override {
 124     observer_list_.AddObserver(obs);
 125   }
 126
 127   void RemoveObserver(StreamTextureFactoryContextObserver* obs) override {
 128     observer_list_.RemoveObserver(obs);
 129   }
 130
 131   void RestoreContext() {
 132     FOR_EACH_OBSERVER(StreamTextureFactoryContextObserver,
 133                       observer_list_,
 134                       ResetStreamTextureProxy());
 135   }
 136
 137  private:
 138   friend class base::RefCountedThreadSafe<VideoContextProvider>;
 139   ~VideoContextProvider() override {}
 140
 141   scoped_refptr<cc::ContextProvider> context_provider_;
 142   gpu::GLInProcessContext* gl_in_process_context_;
 143   base::ObserverList<StreamTextureFactoryContextObserver> observer_list_;
 144
 145   DISALLOW_COPY_AND_ASSIGN(VideoContextProvider);
 146 };
 147
 148 SynchronousCompositorFactoryImpl::SynchronousCompositorFactoryImpl()
 149     : use_ipc_command_buffer_(false),
 150       num_hardware_compositors_(0) {
 151   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 152           switches::kSingleProcess)) {
 153     // TODO(boliu): Figure out how to deal with this more nicely.
 154     SynchronousCompositorFactory::SetInstance(this);
 155   }
 156 }
 157
 158 SynchronousCompositorFactoryImpl::~SynchronousCompositorFactoryImpl() {}
 159
 160 scoped_refptr<base::SingleThreadTaskRunner>
 161 SynchronousCompositorFactoryImpl::GetCompositorTaskRunner() {
 162   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
 163 }
 164
 165 scoped_ptr<cc::OutputSurface>
 166 SynchronousCompositorFactoryImpl::CreateOutputSurface(
 167     int routing_id,
 168     int surface_id,
 169     scoped_refptr<content::FrameSwapMessageQueue> frame_swap_message_queue) {
 170   scoped_refptr<cc::ContextProvider> onscreen_context =
 171       CreateContextProviderForCompositor(surface_id, RENDER_COMPOSITOR_CONTEXT);
 172   scoped_refptr<cc::ContextProvider> worker_context =
 173       CreateContextProviderForCompositor(0, RENDER_WORKER_CONTEXT);
 174
 175   return make_scoped_ptr(new SynchronousCompositorOutputSurface(
 176       onscreen_context, worker_context, routing_id, frame_swap_message_queue));
 177 }
 178
 179 InputHandlerManagerClient*
 180 SynchronousCompositorFactoryImpl::GetInputHandlerManagerClient() {
 181   return synchronous_input_event_filter();
 182 }
 183
 184 scoped_ptr<cc::BeginFrameSource>
 185 SynchronousCompositorFactoryImpl::CreateExternalBeginFrameSource(
 186     int routing_id) {
 187   return make_scoped_ptr(
 188              new SynchronousCompositorExternalBeginFrameSource(routing_id));
 189 }
 190
 191 bool SynchronousCompositorFactoryImpl::OverrideWithFactory() {
 192   return !use_ipc_command_buffer_;
 193 }
 194
 195 scoped_refptr<ContextProviderWebContext>
 196 SynchronousCompositorFactoryImpl::CreateOffscreenContextProvider(
 197     const blink::WebGraphicsContext3D::Attributes& attributes,
 198     const std::string& debug_name) {
 199   DCHECK(!use_ipc_command_buffer_);
 200   ContextHolder holder =
 201       CreateContextHolder(attributes, GpuThreadService(),
 202                           gpu::GLInProcessContextSharedMemoryLimits(), true);
 203   return ContextProviderInProcess::Create(holder.command_buffer.Pass(),
 204                                           debug_name);
 205 }
 206
 207 scoped_refptr<cc::ContextProvider>
 208 SynchronousCompositorFactoryImpl::CreateContextProviderForCompositor(
 209     int surface_id,
 210     CommandBufferContextType type) {
 211   // This is half of what RenderWidget uses because synchronous compositor
 212   // pipeline is only one frame deep. But twice of half for low end here
 213   // because 16bit texture is not supported.
 214   unsigned int mapped_memory_reclaim_limit =
 215       (base::SysInfo::IsLowEndDevice() ? 2 : 6) * 1024 * 1024;
 216   blink::WebGraphicsContext3D::Attributes attributes = GetDefaultAttribs();
 217
 218   if (use_ipc_command_buffer_) {
 219     WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits mem_limits;
 220     mem_limits.mapped_memory_reclaim_limit = mapped_memory_reclaim_limit;
 221     scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context =
 222         CreateContext3D(surface_id, GetDefaultAttribs(), mem_limits);
 223     return make_scoped_refptr(
 224         new SynchronousCompositorContextProvider(context.Pass(), type));
 225   }
 226
 227   gpu::GLInProcessContextSharedMemoryLimits mem_limits;
 228   mem_limits.mapped_memory_reclaim_limit = mapped_memory_reclaim_limit;
 229   ContextHolder holder =
 230       CreateContextHolder(attributes, GpuThreadService(), mem_limits, true);
 231   return ContextProviderInProcess::Create(holder.command_buffer.Pass(),
 232                                           "Child-Compositor");
 233 }
 234
 235 scoped_refptr<StreamTextureFactory>
 236 SynchronousCompositorFactoryImpl::CreateStreamTextureFactory(int frame_id) {
 237   scoped_refptr<StreamTextureFactorySynchronousImpl> factory(
 238       StreamTextureFactorySynchronousImpl::Create(
 239           base::Bind(
 240               &SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory,
 241               base::Unretained(this)),
 242           frame_id));
 243   return factory;
 244 }
 245
 246 WebGraphicsContext3DInProcessCommandBufferImpl*
 247 SynchronousCompositorFactoryImpl::CreateOffscreenGraphicsContext3D(
 248     const blink::WebGraphicsContext3D::Attributes& attributes) {
 249   DCHECK(!use_ipc_command_buffer_);
 250   ContextHolder holder =
 251       CreateContextHolder(attributes, GpuThreadService(),
 252                           gpu::GLInProcessContextSharedMemoryLimits(), true);
 253   return holder.command_buffer.release();
 254 }
 255
 256 gpu::GPUInfo SynchronousCompositorFactoryImpl::GetGPUInfo() const {
 257   DCHECK(!use_ipc_command_buffer_);
 258   return content::GpuDataManager::GetInstance()->GetGPUInfo();
 259 }
 260
 261 void SynchronousCompositorFactoryImpl::CompositorInitializedHardwareDraw() {
 262   base::AutoLock lock(num_hardware_compositor_lock_);
 263   num_hardware_compositors_++;
 264   if (num_hardware_compositors_ == 1 && main_thread_task_runner_.get()) {
 265     main_thread_task_runner_->PostTask(
 266         FROM_HERE,
 267         base::Bind(
 268             &SynchronousCompositorFactoryImpl::RestoreContextOnMainThread,
 269             base::Unretained(this)));
 270   }
 271 }
 272
 273 void SynchronousCompositorFactoryImpl::CompositorReleasedHardwareDraw() {
 274   base::AutoLock lock(num_hardware_compositor_lock_);
 275   DCHECK_GT(num_hardware_compositors_, 0u);
 276   num_hardware_compositors_--;
 277 }
 278
 279 void SynchronousCompositorFactoryImpl::RestoreContextOnMainThread() {
 280   if (CanCreateMainThreadContext() && video_context_provider_.get())
 281     video_context_provider_->RestoreContext();
 282 }
 283
 284 bool SynchronousCompositorFactoryImpl::CanCreateMainThreadContext() {
 285   base::AutoLock lock(num_hardware_compositor_lock_);
 286   return num_hardware_compositors_ > 0;
 287 }
 288
 289 scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 290 SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory() {
 291   {
 292     base::AutoLock lock(num_hardware_compositor_lock_);
 293     main_thread_task_runner_ = base::ThreadTaskRunnerHandle::Get();
 294   }
 295
 296   // Always fail creation even if |video_context_provider_| is not NULL.
 297   // This is to avoid synchronous calls that may deadlock. Setting
 298   // |video_context_provider_| to null is also not safe since it makes
 299   // synchronous destruction uncontrolled and possibly deadlock.
 300   if (!CanCreateMainThreadContext()) {
 301     return
 302         scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>();
 303   }
 304
 305   if (!video_context_provider_.get()) {
 306     DCHECK(android_view_service_.get());
 307
 308     blink::WebGraphicsContext3D::Attributes attributes = GetDefaultAttribs();
 309     attributes.shareResources = false;
 310     // This needs to run in on-screen |android_view_service_| context due to
 311     // SurfaceTexture limitations.
 312     ContextHolder holder =
 313         CreateContextHolder(attributes, android_view_service_,
 314                             gpu::GLInProcessContextSharedMemoryLimits(), false);
 315     video_context_provider_ = new VideoContextProvider(
 316         ContextProviderInProcess::Create(holder.command_buffer.Pass(),
 317                                          "Video-Offscreen-main-thread"),
 318         holder.gl_in_process_context);
 319   }
 320   return video_context_provider_;
 321 }
 322
 323 void SynchronousCompositorFactoryImpl::SetDeferredGpuService(
 324     scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
 325   DCHECK(!android_view_service_.get());
 326   android_view_service_ = service;
 327 }
 328
 329 base::Thread* SynchronousCompositorFactoryImpl::CreateInProcessGpuThread(
 330     const InProcessChildThreadParams& params) {
 331   DCHECK(android_view_service_.get());
 332   return new InProcessGpuThread(params,
 333                                 android_view_service_->sync_point_manager());
 334 }
 335
 336 scoped_refptr<gpu::InProcessCommandBuffer::Service>
 337 SynchronousCompositorFactoryImpl::GpuThreadService() {
 338   DCHECK(android_view_service_.get());
 339   // Create thread lazily on first use.
 340   if (!gpu_thread_service_.get()) {
 341     gpu_thread_service_ = new gpu::GpuInProcessThread(
 342         android_view_service_->sync_point_manager());
 343   }
 344   return gpu_thread_service_;
 345 }
 346
 347 void SynchronousCompositorFactoryImpl::SetUseIpcCommandBuffer() {
 348   use_ipc_command_buffer_ = true;
 349 }
 350
 351 }  // namespace content