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 class VideoContextProvider
  90     : public StreamTextureFactorySynchronousImpl::ContextProvider {
  91  public:
  92   VideoContextProvider(
  93       scoped_ptr<gpu::GLInProcessContext> gl_in_process_context)
  94       : gl_in_process_context_(gl_in_process_context.get()) {
  95
  96     context_provider_ = webkit::gpu::ContextProviderInProcess::Create(
  97         WrapContext(gl_in_process_context.Pass()),
  98         "Video-Offscreen-main-thread");
  99     context_provider_->BindToCurrentThread();
 100   }
 101
 102   virtual scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
 103       uint32 stream_id) OVERRIDE {
 104     return gl_in_process_context_->GetSurfaceTexture(stream_id);
 105   }
 106
 107   virtual gpu::gles2::GLES2Interface* ContextGL() OVERRIDE {
 108     return context_provider_->ContextGL();
 109   }
 110
 111  private:
 112   friend class base::RefCountedThreadSafe<VideoContextProvider>;
 113   virtual ~VideoContextProvider() {}
 114
 115   scoped_refptr<cc::ContextProvider> context_provider_;
 116   gpu::GLInProcessContext* gl_in_process_context_;
 117
 118   DISALLOW_COPY_AND_ASSIGN(VideoContextProvider);
 119 };
 120
 121 }  // namespace
 122
 123 using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
 124
 125 SynchronousCompositorFactoryImpl::SynchronousCompositorFactoryImpl()
 126     : record_full_layer_(true),
 127       num_hardware_compositors_(0) {
 128   SynchronousCompositorFactory::SetInstance(this);
 129 }
 130
 131 SynchronousCompositorFactoryImpl::~SynchronousCompositorFactoryImpl() {}
 132
 133 scoped_refptr<base::MessageLoopProxy>
 134 SynchronousCompositorFactoryImpl::GetCompositorMessageLoop() {
 135   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
 136 }
 137
 138 bool
 139 SynchronousCompositorFactoryImpl::RecordFullLayer() {
 140   return record_full_layer_;
 141 }
 142
 143 scoped_ptr<cc::OutputSurface>
 144 SynchronousCompositorFactoryImpl::CreateOutputSurface(int routing_id) {
 145   scoped_ptr<SynchronousCompositorOutputSurface> output_surface(
 146       new SynchronousCompositorOutputSurface(routing_id));
 147   return output_surface.PassAs<cc::OutputSurface>();
 148 }
 149
 150 InputHandlerManagerClient*
 151 SynchronousCompositorFactoryImpl::GetInputHandlerManagerClient() {
 152   return synchronous_input_event_filter();
 153 }
 154
 155 scoped_refptr<ContextProviderWebContext> SynchronousCompositorFactoryImpl::
 156     GetSharedOffscreenContextProviderForMainThread() {
 157   bool failed = false;
 158   if ((!offscreen_context_for_main_thread_.get() ||
 159        offscreen_context_for_main_thread_->DestroyedOnMainThread())) {
 160     scoped_ptr<gpu::GLInProcessContext> context =
 161         CreateOffscreenContext(GetDefaultAttribs());
 162     offscreen_context_for_main_thread_ =
 163         webkit::gpu::ContextProviderInProcess::Create(
 164             WrapContext(context.Pass()),
 165             "Compositor-Offscreen-main-thread");
 166     failed = !offscreen_context_for_main_thread_.get() ||
 167              !offscreen_context_for_main_thread_->BindToCurrentThread();
 168   }
 169
 170   if (failed) {
 171     offscreen_context_for_main_thread_ = NULL;
 172   }
 173   return offscreen_context_for_main_thread_;
 174 }
 175
 176 scoped_refptr<cc::ContextProvider> SynchronousCompositorFactoryImpl::
 177     CreateOnscreenContextProviderForCompositorThread() {
 178   DCHECK(service_);
 179
 180   if (!share_context_.get())
 181     share_context_ = CreateContext(service_, NULL);
 182   return webkit::gpu::ContextProviderInProcess::Create(
 183       WrapContext(CreateContext(service_, share_context_.get())),
 184       "Child-Compositor");
 185 }
 186
 187 gpu::GLInProcessContext* SynchronousCompositorFactoryImpl::GetShareContext() {
 188   DCHECK(share_context_.get());
 189   return share_context_.get();
 190 }
 191
 192 scoped_refptr<StreamTextureFactory>
 193 SynchronousCompositorFactoryImpl::CreateStreamTextureFactory(int frame_id) {
 194   scoped_refptr<StreamTextureFactorySynchronousImpl> factory(
 195       StreamTextureFactorySynchronousImpl::Create(
 196           base::Bind(
 197               &SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory,
 198               base::Unretained(this)),
 199           frame_id));
 200   return factory;
 201 }
 202
 203 blink::WebGraphicsContext3D*
 204 SynchronousCompositorFactoryImpl::CreateOffscreenGraphicsContext3D(
 205     const blink::WebGraphicsContext3D::Attributes& attributes) {
 206   return WrapContext(CreateOffscreenContext(attributes)).release();
 207 }
 208
 209 void SynchronousCompositorFactoryImpl::CompositorInitializedHardwareDraw() {
 210   base::AutoLock lock(num_hardware_compositor_lock_);
 211   num_hardware_compositors_++;
 212 }
 213
 214 void SynchronousCompositorFactoryImpl::CompositorReleasedHardwareDraw() {
 215   base::AutoLock lock(num_hardware_compositor_lock_);
 216   DCHECK_GT(num_hardware_compositors_, 0u);
 217   num_hardware_compositors_--;
 218 }
 219
 220 bool SynchronousCompositorFactoryImpl::CanCreateMainThreadContext() {
 221   base::AutoLock lock(num_hardware_compositor_lock_);
 222   return num_hardware_compositors_ > 0;
 223 }
 224
 225 scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 226 SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory() {
 227   scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 228       context_provider;
 229   // This check only guarantees the main thread context is created after
 230   // a compositor did successfully initialize hardware draw in the past.
 231   // In particular this does not guarantee that the main thread context
 232   // will fail creation when all compositors release hardware draw.
 233   if (CanCreateMainThreadContext() && !video_context_provider_) {
 234     DCHECK(service_);
 235     DCHECK(share_context_.get());
 236
 237     video_context_provider_ = new VideoContextProvider(
 238         CreateContext(service_, share_context_.get()));
 239   }
 240   return video_context_provider_;
 241 }
 242
 243 void SynchronousCompositorFactoryImpl::SetDeferredGpuService(
 244     scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
 245   DCHECK(!service_);
 246   service_ = service;
 247 }
 248
 249 void SynchronousCompositorFactoryImpl::DisableRecordFullLayer() {
 250   record_full_layer_ = false;
 251 }
 252
 253 }  // namespace content