src/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 "content/browser/android/in_process/synchronous_compositor_output_surface.h"
   8 #include "content/public/browser/browser_thread.h"
   9 #include "gpu/command_buffer/client/gl_in_process_context.h"
  10 #include "ui/gl/android/surface_texture.h"
  11 #include "ui/gl/gl_surface.h"
  12 #include "ui/gl/gl_surface_stub.h"
  13 #include "webkit/common/gpu/context_provider_in_process.h"
  14 #include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
  15
  16 using webkit::gpu::ContextProviderWebContext;
  17
  18 namespace content {
  19
  20 namespace {
  21
  22 blink::WebGraphicsContext3D::Attributes GetDefaultAttribs() {
  23   blink::WebGraphicsContext3D::Attributes attributes;
  24   attributes.antialias = false;
  25   attributes.depth = false;
  26   attributes.stencil = false;
  27   attributes.shareResources = true;
  28   attributes.noAutomaticFlushes = true;
  29
  30   return attributes;
  31 }
  32
  33 using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
  34
  35 scoped_ptr<gpu::GLInProcessContext> CreateOffscreenContext(
  36     const blink::WebGraphicsContext3D::Attributes& attributes) {
  37   const gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
  38
  39   gpu::GLInProcessContextAttribs in_process_attribs;
  40   WebGraphicsContext3DInProcessCommandBufferImpl::ConvertAttributes(
  41       attributes, &in_process_attribs);
  42   in_process_attribs.lose_context_when_out_of_memory = 1;
  43
  44   scoped_ptr<gpu::GLInProcessContext> context(
  45       gpu::GLInProcessContext::Create(NULL /* service */,
  46                                       NULL /* surface */,
  47                                       true /* is_offscreen */,
  48                                       gfx::kNullAcceleratedWidget,
  49                                       gfx::Size(1, 1),
  50                                       NULL /* share_context */,
  51                                       false /* share_resources */,
  52                                       in_process_attribs,
  53                                       gpu_preference));
  54   return context.Pass();
  55 }
  56
  57 scoped_ptr<gpu::GLInProcessContext> CreateContext(
  58     scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
  59     gpu::GLInProcessContext* share_context) {
  60   const gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
  61   gpu::GLInProcessContextAttribs in_process_attribs;
  62   WebGraphicsContext3DInProcessCommandBufferImpl::ConvertAttributes(
  63       GetDefaultAttribs(), &in_process_attribs);
  64   in_process_attribs.lose_context_when_out_of_memory = 1;
  65
  66   scoped_ptr<gpu::GLInProcessContext> context(
  67       gpu::GLInProcessContext::Create(service,
  68                                       NULL /* surface */,
  69                                       false /* is_offscreen */,
  70                                       gfx::kNullAcceleratedWidget,
  71                                       gfx::Size(1, 1),
  72                                       share_context,
  73                                       false /* share_resources */,
  74                                       in_process_attribs,
  75                                       gpu_preference));
  76   return context.Pass();
  77 }
  78
  79 scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl> WrapContext(
  80     scoped_ptr<gpu::GLInProcessContext> context) {
  81   if (!context.get())
  82     return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>();
  83
  84   return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>(
  85       WebGraphicsContext3DInProcessCommandBufferImpl::WrapContext(
  86           context.Pass(), GetDefaultAttribs()));
  87 }
  88
  89 scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>
  90 WrapContextWithAttributes(
  91     scoped_ptr<gpu::GLInProcessContext> context,
  92     const blink::WebGraphicsContext3D::Attributes& attributes) {
  93   if (!context.get())
  94     return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>();
  95
  96   return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>(
  97       WebGraphicsContext3DInProcessCommandBufferImpl::WrapContext(
  98           context.Pass(), attributes));
  99 }
 100
 101 class VideoContextProvider
 102     : public StreamTextureFactorySynchronousImpl::ContextProvider {
 103  public:
 104   VideoContextProvider(
 105       scoped_ptr<gpu::GLInProcessContext> gl_in_process_context)
 106       : gl_in_process_context_(gl_in_process_context.get()) {
 107
 108     context_provider_ = webkit::gpu::ContextProviderInProcess::Create(
 109         WrapContext(gl_in_process_context.Pass()),
 110         "Video-Offscreen-main-thread");
 111     context_provider_->BindToCurrentThread();
 112   }
 113
 114   virtual scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
 115       uint32 stream_id) OVERRIDE {
 116     return gl_in_process_context_->GetSurfaceTexture(stream_id);
 117   }
 118
 119   virtual gpu::gles2::GLES2Interface* ContextGL() OVERRIDE {
 120     return context_provider_->ContextGL();
 121   }
 122
 123  private:
 124   friend class base::RefCountedThreadSafe<VideoContextProvider>;
 125   virtual ~VideoContextProvider() {}
 126
 127   scoped_refptr<cc::ContextProvider> context_provider_;
 128   gpu::GLInProcessContext* gl_in_process_context_;
 129
 130   DISALLOW_COPY_AND_ASSIGN(VideoContextProvider);
 131 };
 132
 133 }  // namespace
 134
 135 using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
 136
 137 SynchronousCompositorFactoryImpl::SynchronousCompositorFactoryImpl()
 138     : record_full_layer_(true),
 139       num_hardware_compositors_(0) {
 140   SynchronousCompositorFactory::SetInstance(this);
 141 }
 142
 143 SynchronousCompositorFactoryImpl::~SynchronousCompositorFactoryImpl() {}
 144
 145 scoped_refptr<base::MessageLoopProxy>
 146 SynchronousCompositorFactoryImpl::GetCompositorMessageLoop() {
 147   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
 148 }
 149
 150 bool
 151 SynchronousCompositorFactoryImpl::RecordFullLayer() {
 152   return record_full_layer_;
 153 }
 154
 155 scoped_ptr<cc::OutputSurface>
 156 SynchronousCompositorFactoryImpl::CreateOutputSurface(int routing_id) {
 157   scoped_ptr<SynchronousCompositorOutputSurface> output_surface(
 158       new SynchronousCompositorOutputSurface(routing_id));
 159   return output_surface.PassAs<cc::OutputSurface>();
 160 }
 161
 162 InputHandlerManagerClient*
 163 SynchronousCompositorFactoryImpl::GetInputHandlerManagerClient() {
 164   return synchronous_input_event_filter();
 165 }
 166
 167 scoped_refptr<ContextProviderWebContext> SynchronousCompositorFactoryImpl::
 168     GetSharedOffscreenContextProviderForMainThread() {
 169   bool failed = false;
 170   if ((!offscreen_context_for_main_thread_.get() ||
 171        offscreen_context_for_main_thread_->DestroyedOnMainThread())) {
 172     scoped_ptr<gpu::GLInProcessContext> context =
 173         CreateOffscreenContext(GetDefaultAttribs());
 174     offscreen_context_for_main_thread_ =
 175         webkit::gpu::ContextProviderInProcess::Create(
 176             WrapContext(context.Pass()),
 177             "Compositor-Offscreen-main-thread");
 178     failed = !offscreen_context_for_main_thread_.get() ||
 179              !offscreen_context_for_main_thread_->BindToCurrentThread();
 180   }
 181
 182   if (failed) {
 183     offscreen_context_for_main_thread_ = NULL;
 184   }
 185   return offscreen_context_for_main_thread_;
 186 }
 187
 188 scoped_refptr<cc::ContextProvider> SynchronousCompositorFactoryImpl::
 189     CreateOnscreenContextProviderForCompositorThread() {
 190   DCHECK(service_);
 191
 192   if (!share_context_.get())
 193     share_context_ = CreateContext(service_, NULL);
 194   return webkit::gpu::ContextProviderInProcess::Create(
 195       WrapContext(CreateContext(service_, share_context_.get())),
 196       "Child-Compositor");
 197 }
 198
 199 gpu::GLInProcessContext* SynchronousCompositorFactoryImpl::GetShareContext() {
 200   DCHECK(share_context_.get());
 201   return share_context_.get();
 202 }
 203
 204 scoped_refptr<StreamTextureFactory>
 205 SynchronousCompositorFactoryImpl::CreateStreamTextureFactory(int frame_id) {
 206   scoped_refptr<StreamTextureFactorySynchronousImpl> factory(
 207       StreamTextureFactorySynchronousImpl::Create(
 208           base::Bind(
 209               &SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory,
 210               base::Unretained(this)),
 211           frame_id));
 212   return factory;
 213 }
 214
 215 blink::WebGraphicsContext3D*
 216 SynchronousCompositorFactoryImpl::CreateOffscreenGraphicsContext3D(
 217     const blink::WebGraphicsContext3D::Attributes& attributes) {
 218   return WrapContextWithAttributes(CreateOffscreenContext(attributes),
 219                                    attributes).release();
 220 }
 221
 222 void SynchronousCompositorFactoryImpl::CompositorInitializedHardwareDraw() {
 223   base::AutoLock lock(num_hardware_compositor_lock_);
 224   num_hardware_compositors_++;
 225 }
 226
 227 void SynchronousCompositorFactoryImpl::CompositorReleasedHardwareDraw() {
 228   base::AutoLock lock(num_hardware_compositor_lock_);
 229   DCHECK_GT(num_hardware_compositors_, 0u);
 230   num_hardware_compositors_--;
 231   if (num_hardware_compositors_ == 0) {
 232     // Nullify the video_context_provider_ now so that it is not null only if
 233     // there is at least 1 hardware compositor
 234     video_context_provider_ = NULL;
 235   }
 236 }
 237
 238 bool SynchronousCompositorFactoryImpl::CanCreateMainThreadContext() {
 239   base::AutoLock lock(num_hardware_compositor_lock_);
 240   return num_hardware_compositors_ > 0;
 241 }
 242
 243 scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 244 SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory() {
 245   scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 246       context_provider;
 247   // This check only guarantees the main thread context is created after
 248   // a compositor did successfully initialize hardware draw in the past.
 249   // When all compositors have released hardware draw, main thread context
 250   // creation is guaranteed to fail.
 251   if (CanCreateMainThreadContext() && !video_context_provider_) {
 252     DCHECK(service_);
 253     DCHECK(share_context_.get());
 254
 255     video_context_provider_ = new VideoContextProvider(
 256         CreateContext(service_, share_context_.get()));
 257   }
 258   return video_context_provider_;
 259 }
 260
 261 void SynchronousCompositorFactoryImpl::SetDeferredGpuService(
 262     scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
 263   DCHECK(!service_);
 264   service_ = service;
 265 }
 266
 267 void SynchronousCompositorFactoryImpl::SetRecordFullDocument(
 268     bool record_full_document) {
 269   record_full_layer_ = record_full_document;
 270 }
 271
 272 }  // namespace content