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_main_thread_(NULL),
 104       wrapped_gl_context_for_compositor_thread_(NULL),
 105       num_hardware_compositors_(0) {
 106   SynchronousCompositorFactory::SetInstance(this);
 107 }
 108
 109 SynchronousCompositorFactoryImpl::~SynchronousCompositorFactoryImpl() {}
 110
 111 scoped_refptr<base::MessageLoopProxy>
 112 SynchronousCompositorFactoryImpl::GetCompositorMessageLoop() {
 113   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI);
 114 }
 115
 116 scoped_ptr<cc::OutputSurface>
 117 SynchronousCompositorFactoryImpl::CreateOutputSurface(int routing_id) {
 118   scoped_ptr<SynchronousCompositorOutputSurface> output_surface(
 119       new SynchronousCompositorOutputSurface(routing_id));
 120   return output_surface.PassAs<cc::OutputSurface>();
 121 }
 122
 123 InputHandlerManagerClient*
 124 SynchronousCompositorFactoryImpl::GetInputHandlerManagerClient() {
 125   return synchronous_input_event_filter();
 126 }
 127
 128 scoped_refptr<ContextProviderWebContext>
 129 SynchronousCompositorFactoryImpl::GetOffscreenContextProviderForMainThread() {
 130   bool failed = false;
 131   if ((!offscreen_context_for_main_thread_.get() ||
 132        offscreen_context_for_main_thread_->DestroyedOnMainThread())) {
 133     scoped_ptr<gpu::GLInProcessContext> context =
 134         CreateContext(NULL, NULL, NULL);
 135     wrapped_gl_context_for_main_thread_ = context.get();
 136     offscreen_context_for_main_thread_ =
 137         webkit::gpu::ContextProviderInProcess::Create(
 138             WrapContext(context.Pass()),
 139             "Compositor-Offscreen-main-thread");
 140     failed = !offscreen_context_for_main_thread_.get() ||
 141              !offscreen_context_for_main_thread_->BindToCurrentThread();
 142   }
 143
 144   if (failed) {
 145     offscreen_context_for_main_thread_ = NULL;
 146     wrapped_gl_context_for_main_thread_ = NULL;
 147   }
 148   return offscreen_context_for_main_thread_;
 149 }
 150
 151 // This is called on both renderer main thread (offscreen context creation
 152 // path shared between cross-process and in-process platforms) and renderer
 153 // compositor impl thread (InitializeHwDraw) in order to support Android
 154 // WebView synchronously enable and disable hardware mode multiple times in
 155 // the same task. This is ok because in-process WGC3D creation may happen on
 156 // any thread and is lightweight.
 157 scoped_refptr<cc::ContextProvider> SynchronousCompositorFactoryImpl::
 158     GetOffscreenContextProviderForCompositorThread() {
 159   base::AutoLock lock(offscreen_context_for_compositor_thread_lock_);
 160   DCHECK(service_);
 161   bool failed = false;
 162   if (!offscreen_context_for_compositor_thread_.get() ||
 163       offscreen_context_for_compositor_thread_->DestroyedOnMainThread()) {
 164     scoped_ptr<gpu::GLInProcessContext> context =
 165         CreateContext(new gfx::GLSurfaceStub, service_, NULL);
 166     wrapped_gl_context_for_compositor_thread_ = context.get();
 167     offscreen_context_for_compositor_thread_ =
 168         webkit::gpu::ContextProviderInProcess::Create(
 169             WrapContext(context.Pass()),
 170             "Compositor-Offscreen-compositor-thread");
 171     failed = !offscreen_context_for_compositor_thread_.get() ||
 172              !offscreen_context_for_compositor_thread_->BindToCurrentThread();
 173   }
 174   if (failed) {
 175     offscreen_context_for_compositor_thread_ = NULL;
 176     wrapped_gl_context_for_compositor_thread_ = NULL;
 177   }
 178   return offscreen_context_for_compositor_thread_;
 179 }
 180
 181 scoped_refptr<cc::ContextProvider> SynchronousCompositorFactoryImpl::
 182     CreateOnscreenContextProviderForCompositorThread(
 183         scoped_refptr<gfx::GLSurface> surface) {
 184   DCHECK(surface);
 185   DCHECK(service_);
 186   DCHECK(wrapped_gl_context_for_compositor_thread_);
 187
 188   return webkit::gpu::ContextProviderInProcess::Create(
 189       WrapContext(CreateContext(
 190           surface, service_, wrapped_gl_context_for_compositor_thread_)),
 191       "Compositor-Onscreen");
 192 }
 193
 194 scoped_ptr<StreamTextureFactory>
 195 SynchronousCompositorFactoryImpl::CreateStreamTextureFactory(int view_id) {
 196   scoped_ptr<StreamTextureFactorySynchronousImpl> factory(
 197       new StreamTextureFactorySynchronousImpl(
 198           base::Bind(&SynchronousCompositorFactoryImpl::
 199                           TryCreateStreamTextureFactory,
 200                      base::Unretained(this)),
 201           view_id));
 202   return factory.PassAs<StreamTextureFactory>();
 203 }
 204
 205 void SynchronousCompositorFactoryImpl::CompositorInitializedHardwareDraw() {
 206   base::AutoLock lock(num_hardware_compositor_lock_);
 207   num_hardware_compositors_++;
 208 }
 209
 210 void SynchronousCompositorFactoryImpl::CompositorReleasedHardwareDraw() {
 211   base::AutoLock lock(num_hardware_compositor_lock_);
 212   DCHECK_GT(num_hardware_compositors_, 0u);
 213   num_hardware_compositors_--;
 214 }
 215
 216 bool SynchronousCompositorFactoryImpl::CanCreateMainThreadContext() {
 217   base::AutoLock lock(num_hardware_compositor_lock_);
 218   return num_hardware_compositors_ > 0;
 219 }
 220
 221 scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 222 SynchronousCompositorFactoryImpl::TryCreateStreamTextureFactory() {
 223   scoped_refptr<StreamTextureFactorySynchronousImpl::ContextProvider>
 224       context_provider;
 225   // This check only guarantees the main thread context is created after
 226   // a compositor did successfully initialize hardware draw in the past.
 227   // In particular this does not guarantee that the main thread context
 228   // will fail creation when all compositors release hardware draw.
 229   if (CanCreateMainThreadContext() && !video_context_provider_) {
 230     DCHECK(service_);
 231     DCHECK(wrapped_gl_context_for_compositor_thread_);
 232
 233     video_context_provider_ = new VideoContextProvider(
 234         CreateContext(new gfx::GLSurfaceStub,
 235                       service_,
 236                       wrapped_gl_context_for_compositor_thread_));
 237   }
 238   return video_context_provider_;
 239 }
 240
 241 void SynchronousCompositorFactoryImpl::SetDeferredGpuService(
 242     scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
 243   DCHECK(!service_);
 244   service_ = service;
 245 }
 246
 247 }  // namespace content