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> CreateContext(
  36     scoped_refptr<gfx::GLSurface> surface,
  37     scoped_refptr<gpu::InProcessCommandBuffer::Service> service,
  38     gpu::GLInProcessContext* share_context) {
  39   const gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
  40
  41   if (!surface)
  42     surface = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(1, 1));
  43
  44   gpu::GLInProcessContextAttribs in_process_attribs;
  45   WebGraphicsContext3DInProcessCommandBufferImpl::ConvertAttributes(
  46       GetDefaultAttribs(), &in_process_attribs);
  47   scoped_ptr<gpu::GLInProcessContext> context(
  48       gpu::GLInProcessContext::CreateWithSurface(surface,
  49                                                  service,
  50                                                  share_context,
  51                                                  in_process_attribs,
  52                                                  gpu_preference));
  53   return context.Pass();
  54 }
  55
  56 scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl> WrapContext(
  57     scoped_ptr<gpu::GLInProcessContext> context) {
  58   if (!context.get())
  59     return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>();
  60
  61   return scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>(
  62       WebGraphicsContext3DInProcessCommandBufferImpl::WrapContext(
  63           context.Pass(), GetDefaultAttribs()));
  64 }
  65
  66 class VideoContextProvider
  67     : public StreamTextureFactorySynchronousImpl::ContextProvider {
  68  public:
  69   VideoContextProvider(
  70       scoped_ptr<gpu::GLInProcessContext> gl_in_process_context)
  71       : gl_in_process_context_(gl_in_process_context.get()) {
  72
  73     context_provider_ = webkit::gpu::ContextProviderInProcess::Create(
  74         WrapContext(gl_in_process_context.Pass()),
  75         "Video-Offscreen-main-thread");
  76     context_provider_->BindToCurrentThread();
  77   }
  78
  79   virtual scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
  80       uint32 stream_id) OVERRIDE {
  81     return gl_in_process_context_->GetSurfaceTexture(stream_id);
  82   }
  83
  84   virtual gpu::gles2::GLES2Interface* ContextGL() OVERRIDE {
  85     return context_provider_->ContextGL();
  86   }
  87
  88  private:
  89   friend class base::RefCountedThreadSafe<VideoContextProvider>;
  90   virtual ~VideoContextProvider() {}
  91
  92   scoped_refptr<cc::ContextProvider> context_provider_;
  93   gpu::GLInProcessContext* gl_in_process_context_;
  94
  95   DISALLOW_COPY_AND_ASSIGN(VideoContextProvider);
  96 };
  97
  98 }  // namespace
  99
 100 using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
 101
 102 SynchronousCompositorFactoryImpl::SynchronousCompositorFactoryImpl()
 103     : wrapped_gl_context_for_compositor_thread_(NULL),
 104       num_hardware_compositors_(0) {
 105   SynchronousCompositorFactory::SetInstance(this);
 106 }
 107
 108 SynchronousCompositorFactoryImpl::~SynchronousCompositorFactoryImpl() {}
 109
 110 scoped_refptr<base::MessageLoopProxy>
 111 SynchronousCompositorFactoryImpl::GetCompositorMessageLoop() {
 112   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
 113 }
 114
 115 scoped_ptr<cc::OutputSurface>
 116 SynchronousCompositorFactoryImpl::CreateOutputSurface(int routing_id) {
 117   scoped_ptr<SynchronousCompositorOutputSurface> output_surface(
 118       new SynchronousCompositorOutputSurface(routing_id));
 119   return output_surface.PassAs<cc::OutputSurface>();
 120 }
 121
 122 InputHandlerManagerClient*
 123 SynchronousCompositorFactoryImpl::GetInputHandlerManagerClient() {
 124   return synchronous_input_event_filter();
 125 }
 126
 127 scoped_refptr<ContextProviderWebContext>
 128 SynchronousCompositorFactoryImpl::GetOffscreenContextProviderForMainThread() {
 129   bool failed = false;
 130   if ((!offscreen_context_for_main_thread_.get() ||
 131        offscreen_context_for_main_thread_->DestroyedOnMainThread())) {
 132     scoped_ptr<gpu::GLInProcessContext> context =
 133         CreateContext(NULL, NULL, NULL);
 134     offscreen_context_for_main_thread_ =
 135         webkit::gpu::ContextProviderInProcess::Create(
 136             WrapContext(context.Pass()),
 137             "Compositor-Offscreen-main-thread");
 138     failed = !offscreen_context_for_main_thread_.get() ||
 139              !offscreen_context_for_main_thread_->BindToCurrentThread();
 140   }
 141
 142   if (failed) {
 143     offscreen_context_for_main_thread_ = NULL;
 144   }
 145   return offscreen_context_for_main_thread_;
 146 }
 147
 148 // This is called on both renderer main thread (offscreen context creation
 149 // path shared between cross-process and in-process platforms) and renderer
 150 // compositor impl thread (InitializeHwDraw) in order to support Android
 151 // WebView synchronously enable and disable hardware mode multiple times in
 152 // the same task. This is ok because in-process WGC3D creation may happen on
 153 // any thread and is lightweight.
 154 scoped_refptr<cc::ContextProvider> SynchronousCompositorFactoryImpl::
 155     GetOffscreenContextProviderForCompositorThread() {
 156   base::AutoLock lock(offscreen_context_for_compositor_thread_lock_);
 157   DCHECK(service_);
 158   bool failed = false;
 159   if (!offscreen_context_for_compositor_thread_.get() ||
 160       offscreen_context_for_compositor_thread_->DestroyedOnMainThread()) {
 161     scoped_ptr<gpu::GLInProcessContext> context =
 162         CreateContext(new gfx::GLSurfaceStub, service_, NULL);
 163     wrapped_gl_context_for_compositor_thread_ = context.get();
 164     offscreen_context_for_compositor_thread_ =
 165         webkit::gpu::ContextProviderInProcess::Create(
 166             WrapContext(context.Pass()),
 167             "Compositor-Offscreen-compositor-thread");
 168     failed = !offscreen_context_for_compositor_thread_.get() ||
 169              !offscreen_context_for_compositor_thread_->BindToCurrentThread();
 170   }
 171   if (failed) {
 172     offscreen_context_for_compositor_thread_ = NULL;
 173     wrapped_gl_context_for_compositor_thread_ = NULL;
 174   }
 175   return offscreen_context_for_compositor_thread_;
 176 }
 177
 178 scoped_refptr<cc::ContextProvider> SynchronousCompositorFactoryImpl::
 179     CreateOnscreenContextProviderForCompositorThread(
 180         scoped_refptr<gfx::GLSurface> surface) {
 181   DCHECK(surface);
 182   DCHECK(service_);
 183   DCHECK(wrapped_gl_context_for_compositor_thread_);
 184
 185   return webkit::gpu::ContextProviderInProcess::Create(
 186       WrapContext(CreateContext(
 187           surface, service_, wrapped_gl_context_for_compositor_thread_)),
 188       "Compositor-Onscreen");
 189 }
 190
 191 scoped_ptr<StreamTextureFactory>
 192 SynchronousCompositorFactoryImpl::CreateStreamTextureFactory(int view_id) {
 193   scoped_ptr<StreamTextureFactorySynchronousImpl> factory(
 194       new StreamTextureFactorySynchronousImpl(
 195           base::Bind(&SynchronousCompositorFactoryImpl::
 196                           TryCreateStreamTextureFactory,
 197                      base::Unretained(this)),
 198           view_id));
 199   return factory.PassAs<StreamTextureFactory>();
 200 }
 201
 202 void SynchronousCompositorFactoryImpl::CompositorInitializedHardwareDraw() {
 203   base::AutoLock lock(num_hardware_compositor_lock_);
 204   num_hardware_compositors_++;
 205 }
 206
 207 void SynchronousCompositorFactoryImpl::CompositorReleasedHardwareDraw() {
 208   base::AutoLock lock(num_hardware_compositor_lock_);
 209   DCHECK_GT(num_hardware_compositors_, 0u);
 210   num_hardware_compositors_--;
 211 }
 212
 213 bool SynchronousCompositorFactoryImpl::CanCreateMainThreadContext() {
 214   base::AutoLock lock(num_hardware_compositor_lock_);
 215   return num_hardware_compositors_ > 0;
 216 }
 217
 218 scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 219 SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory() {
 220   scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 221       context_provider;
 222   // This check only guarantees the main thread context is created after
 223   // a compositor did successfully initialize hardware draw in the past.
 224   // In particular this does not guarantee that the main thread context
 225   // will fail creation when all compositors release hardware draw.
 226   if (CanCreateMainThreadContext() && !video_context_provider_) {
 227     DCHECK(service_);
 228     DCHECK(wrapped_gl_context_for_compositor_thread_);
 229
 230     video_context_provider_ = new VideoContextProvider(
 231         CreateContext(new gfx::GLSurfaceStub,
 232                       service_,
 233                       wrapped_gl_context_for_compositor_thread_));
 234   }
 235   return video_context_provider_;
 236 }
 237
 238 void SynchronousCompositorFactoryImpl::SetDeferredGpuService(
 239     scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
 240   DCHECK(!service_);
 241   service_ = service;
 242 }
 243
 244 }  // namespace content