content/renderer/pepper/ppb_graphics_3d_impl.cc

   1 // Copyright (c) 2012 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/renderer/pepper/ppb_graphics_3d_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/location.h"
  10 #include "base/single_thread_task_runner.h"
  11 #include "base/strings/utf_string_conversions.h"
  12 #include "base/thread_task_runner_handle.h"
  13 #include "content/common/gpu/client/command_buffer_proxy_impl.h"
  14 #include "content/common/gpu/client/gpu_channel_host.h"
  15 #include "content/public/common/content_switches.h"
  16 #include "content/public/common/web_preferences.h"
  17 #include "content/renderer/pepper/host_globals.h"
  18 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
  19 #include "content/renderer/pepper/plugin_instance_throttler_impl.h"
  20 #include "content/renderer/pepper/plugin_module.h"
  21 #include "content/renderer/render_thread_impl.h"
  22 #include "content/renderer/render_view_impl.h"
  23 #include "gpu/command_buffer/client/gles2_implementation.h"
  24 #include "ppapi/c/ppp_graphics_3d.h"
  25 #include "ppapi/thunk/enter.h"
  26 #include "third_party/WebKit/public/platform/WebString.h"
  27 #include "third_party/WebKit/public/web/WebConsoleMessage.h"
  28 #include "third_party/WebKit/public/web/WebDocument.h"
  29 #include "third_party/WebKit/public/web/WebElement.h"
  30 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  31 #include "third_party/WebKit/public/web/WebPluginContainer.h"
  32
  33 using ppapi::thunk::EnterResourceNoLock;
  34 using ppapi::thunk::PPB_Graphics3D_API;
  35 using blink::WebConsoleMessage;
  36 using blink::WebLocalFrame;
  37 using blink::WebPluginContainer;
  38 using blink::WebString;
  39
  40 namespace content {
  41
  42 namespace {
  43
  44 const int32 kCommandBufferSize = 1024 * 1024;
  45 const int32 kTransferBufferSize = 1024 * 1024;
  46
  47 }  // namespace
  48
  49 PPB_Graphics3D_Impl::PPB_Graphics3D_Impl(PP_Instance instance)
  50     : PPB_Graphics3D_Shared(instance),
  51       bound_to_instance_(false),
  52       commit_pending_(false),
  53       sync_point_(0),
  54       has_alpha_(false),
  55       weak_ptr_factory_(this) {}
  56
  57 PPB_Graphics3D_Impl::~PPB_Graphics3D_Impl() {}
  58
  59 // static
  60 PP_Resource PPB_Graphics3D_Impl::Create(PP_Instance instance,
  61                                         PP_Resource share_context,
  62                                         const int32_t* attrib_list) {
  63   PPB_Graphics3D_API* share_api = NULL;
  64   if (share_context) {
  65     EnterResourceNoLock<PPB_Graphics3D_API> enter(share_context, true);
  66     if (enter.failed())
  67       return 0;
  68     share_api = enter.object();
  69   }
  70   scoped_refptr<PPB_Graphics3D_Impl> graphics_3d(
  71       new PPB_Graphics3D_Impl(instance));
  72   if (!graphics_3d->Init(share_api, attrib_list))
  73     return 0;
  74   return graphics_3d->GetReference();
  75 }
  76
  77 // static
  78 PP_Resource PPB_Graphics3D_Impl::CreateRaw(
  79     PP_Instance instance,
  80     PP_Resource share_context,
  81     const int32_t* attrib_list,
  82     gpu::Capabilities* capabilities,
  83     base::SharedMemoryHandle* shared_state_handle) {
  84   PPB_Graphics3D_API* share_api = NULL;
  85   if (share_context) {
  86     EnterResourceNoLock<PPB_Graphics3D_API> enter(share_context, true);
  87     if (enter.failed())
  88       return 0;
  89     share_api = enter.object();
  90   }
  91   scoped_refptr<PPB_Graphics3D_Impl> graphics_3d(
  92       new PPB_Graphics3D_Impl(instance));
  93   if (!graphics_3d->InitRaw(share_api, attrib_list, capabilities,
  94                             shared_state_handle))
  95     return 0;
  96   return graphics_3d->GetReference();
  97 }
  98
  99 PP_Bool PPB_Graphics3D_Impl::SetGetBuffer(int32_t transfer_buffer_id) {
 100   GetCommandBuffer()->SetGetBuffer(transfer_buffer_id);
 101   return PP_TRUE;
 102 }
 103
 104 scoped_refptr<gpu::Buffer> PPB_Graphics3D_Impl::CreateTransferBuffer(
 105     uint32_t size,
 106     int32_t* id) {
 107   return GetCommandBuffer()->CreateTransferBuffer(size, id);
 108 }
 109
 110 PP_Bool PPB_Graphics3D_Impl::DestroyTransferBuffer(int32_t id) {
 111   GetCommandBuffer()->DestroyTransferBuffer(id);
 112   return PP_TRUE;
 113 }
 114
 115 PP_Bool PPB_Graphics3D_Impl::Flush(int32_t put_offset) {
 116   GetCommandBuffer()->Flush(put_offset);
 117   return PP_TRUE;
 118 }
 119
 120 gpu::CommandBuffer::State PPB_Graphics3D_Impl::WaitForTokenInRange(
 121     int32_t start,
 122     int32_t end) {
 123   GetCommandBuffer()->WaitForTokenInRange(start, end);
 124   return GetCommandBuffer()->GetLastState();
 125 }
 126
 127 gpu::CommandBuffer::State PPB_Graphics3D_Impl::WaitForGetOffsetInRange(
 128     int32_t start,
 129     int32_t end) {
 130   GetCommandBuffer()->WaitForGetOffsetInRange(start, end);
 131   return GetCommandBuffer()->GetLastState();
 132 }
 133
 134 uint32_t PPB_Graphics3D_Impl::InsertSyncPoint() {
 135   return command_buffer_->InsertSyncPoint();
 136 }
 137
 138 uint32_t PPB_Graphics3D_Impl::InsertFutureSyncPoint() {
 139   return command_buffer_->InsertFutureSyncPoint();
 140 }
 141
 142 void PPB_Graphics3D_Impl::RetireSyncPoint(uint32_t sync_point) {
 143   return command_buffer_->RetireSyncPoint(sync_point);
 144 }
 145
 146 bool PPB_Graphics3D_Impl::BindToInstance(bool bind) {
 147   bound_to_instance_ = bind;
 148   return true;
 149 }
 150
 151 bool PPB_Graphics3D_Impl::IsOpaque() { return !has_alpha_; }
 152
 153 void PPB_Graphics3D_Impl::ViewInitiatedPaint() {
 154   commit_pending_ = false;
 155
 156   if (HasPendingSwap())
 157     SwapBuffersACK(PP_OK);
 158 }
 159
 160 CommandBufferProxyImpl* PPB_Graphics3D_Impl::GetCommandBufferProxy() {
 161   DCHECK(command_buffer_);
 162   return command_buffer_.get();
 163 }
 164
 165 gpu::CommandBuffer* PPB_Graphics3D_Impl::GetCommandBuffer() {
 166   return command_buffer_.get();
 167 }
 168
 169 gpu::GpuControl* PPB_Graphics3D_Impl::GetGpuControl() {
 170   return command_buffer_.get();
 171 }
 172
 173 int32 PPB_Graphics3D_Impl::DoSwapBuffers() {
 174   DCHECK(command_buffer_);
 175   // We do not have a GLES2 implementation when using an OOP proxy.
 176   // The plugin-side proxy is responsible for adding the SwapBuffers command
 177   // to the command buffer in that case.
 178   if (gles2_impl())
 179     gles2_impl()->SwapBuffers();
 180
 181   // Since the backing texture has been updated, a new sync point should be
 182   // inserted.
 183   sync_point_ = command_buffer_->InsertSyncPoint();
 184
 185   if (bound_to_instance_) {
 186     // If we are bound to the instance, we need to ask the compositor
 187     // to commit our backing texture so that the graphics appears on the page.
 188     // When the backing texture will be committed we get notified via
 189     // ViewFlushedPaint().
 190     //
 191     // Don't need to check for NULL from GetPluginInstance since when we're
 192     // bound, we know our instance is valid.
 193     HostGlobals::Get()->GetInstance(pp_instance())->CommitBackingTexture();
 194     commit_pending_ = true;
 195   } else {
 196     // Wait for the command to complete on the GPU to allow for throttling.
 197     command_buffer_->SignalSyncPoint(
 198         sync_point_,
 199         base::Bind(&PPB_Graphics3D_Impl::OnSwapBuffers,
 200                    weak_ptr_factory_.GetWeakPtr()));
 201   }
 202
 203   return PP_OK_COMPLETIONPENDING;
 204 }
 205
 206 bool PPB_Graphics3D_Impl::Init(PPB_Graphics3D_API* share_context,
 207                                const int32_t* attrib_list) {
 208   if (!InitRaw(share_context, attrib_list, NULL, NULL))
 209     return false;
 210
 211   gpu::gles2::GLES2Implementation* share_gles2 = NULL;
 212   if (share_context) {
 213     share_gles2 =
 214         static_cast<PPB_Graphics3D_Shared*>(share_context)->gles2_impl();
 215   }
 216
 217   return CreateGLES2Impl(kCommandBufferSize, kTransferBufferSize, share_gles2);
 218 }
 219
 220 bool PPB_Graphics3D_Impl::InitRaw(
 221     PPB_Graphics3D_API* share_context,
 222     const int32_t* attrib_list,
 223     gpu::Capabilities* capabilities,
 224     base::SharedMemoryHandle* shared_state_handle) {
 225   PepperPluginInstanceImpl* plugin_instance =
 226       HostGlobals::Get()->GetInstance(pp_instance());
 227   if (!plugin_instance)
 228     return false;
 229
 230   const WebPreferences& prefs =
 231       static_cast<RenderViewImpl*>(plugin_instance->GetRenderView())
 232           ->webkit_preferences();
 233   // 3D access might be disabled or blacklisted.
 234   if (!prefs.pepper_3d_enabled)
 235     return false;
 236
 237   // Force SW rendering for keyframe extraction to avoid pixel reads from VRAM.
 238   PluginInstanceThrottlerImpl* throttler = plugin_instance->throttler();
 239   if (throttler && throttler->needs_representative_keyframe())
 240     return false;
 241
 242   RenderThreadImpl* render_thread = RenderThreadImpl::current();
 243   if (!render_thread)
 244     return false;
 245
 246   channel_ = render_thread->EstablishGpuChannelSync(
 247       CAUSE_FOR_GPU_LAUNCH_PEPPERPLATFORMCONTEXT3DIMPL_INITIALIZE);
 248   if (!channel_.get())
 249     return false;
 250
 251   gfx::Size surface_size;
 252   std::vector<int32> attribs;
 253   gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
 254   // TODO(alokp): Change GpuChannelHost::CreateOffscreenCommandBuffer()
 255   // interface to accept width and height in the attrib_list so that
 256   // we do not need to filter for width and height here.
 257   if (attrib_list) {
 258     for (const int32_t* attr = attrib_list; attr[0] != PP_GRAPHICS3DATTRIB_NONE;
 259          attr += 2) {
 260       switch (attr[0]) {
 261         case PP_GRAPHICS3DATTRIB_WIDTH:
 262           surface_size.set_width(attr[1]);
 263           break;
 264         case PP_GRAPHICS3DATTRIB_HEIGHT:
 265           surface_size.set_height(attr[1]);
 266           break;
 267         case PP_GRAPHICS3DATTRIB_GPU_PREFERENCE:
 268           gpu_preference =
 269               (attr[1] == PP_GRAPHICS3DATTRIB_GPU_PREFERENCE_LOW_POWER)
 270                   ? gfx::PreferIntegratedGpu
 271                   : gfx::PreferDiscreteGpu;
 272           break;
 273         case PP_GRAPHICS3DATTRIB_ALPHA_SIZE:
 274           has_alpha_ = attr[1] > 0;
 275         // fall-through
 276         default:
 277           attribs.push_back(attr[0]);
 278           attribs.push_back(attr[1]);
 279           break;
 280       }
 281     }
 282     attribs.push_back(PP_GRAPHICS3DATTRIB_NONE);
 283   }
 284
 285   CommandBufferProxyImpl* share_buffer = NULL;
 286   if (share_context) {
 287     PPB_Graphics3D_Impl* share_graphics =
 288         static_cast<PPB_Graphics3D_Impl*>(share_context);
 289     share_buffer = share_graphics->GetCommandBufferProxy();
 290   }
 291
 292   command_buffer_ = channel_->CreateOffscreenCommandBuffer(
 293       surface_size, share_buffer, attribs, GURL::EmptyGURL(), gpu_preference);
 294   if (!command_buffer_)
 295     return false;
 296   if (!command_buffer_->Initialize())
 297     return false;
 298   if (shared_state_handle)
 299     *shared_state_handle = command_buffer_->GetSharedStateHandle();
 300   if (capabilities)
 301     *capabilities = command_buffer_->GetCapabilities();
 302   mailbox_ = gpu::Mailbox::Generate();
 303   if (!command_buffer_->ProduceFrontBuffer(mailbox_))
 304     return false;
 305   sync_point_ = command_buffer_->InsertSyncPoint();
 306
 307   command_buffer_->SetContextLostCallback(base::Bind(
 308       &PPB_Graphics3D_Impl::OnContextLost, weak_ptr_factory_.GetWeakPtr()));
 309
 310   command_buffer_->SetOnConsoleMessageCallback(base::Bind(
 311       &PPB_Graphics3D_Impl::OnConsoleMessage, weak_ptr_factory_.GetWeakPtr()));
 312   return true;
 313 }
 314
 315 void PPB_Graphics3D_Impl::OnConsoleMessage(const std::string& message, int id) {
 316   if (!bound_to_instance_)
 317     return;
 318   WebPluginContainer* container =
 319       HostGlobals::Get()->GetInstance(pp_instance())->container();
 320   if (!container)
 321     return;
 322   WebLocalFrame* frame = container->element().document().frame();
 323   if (!frame)
 324     return;
 325   WebConsoleMessage console_message = WebConsoleMessage(
 326       WebConsoleMessage::LevelError, WebString(base::UTF8ToUTF16(message)));
 327   frame->addMessageToConsole(console_message);
 328 }
 329
 330 void PPB_Graphics3D_Impl::OnSwapBuffers() {
 331   if (HasPendingSwap()) {
 332     // If we're off-screen, no need to trigger and wait for compositing.
 333     // Just send the swap-buffers ACK to the plugin immediately.
 334     commit_pending_ = false;
 335     SwapBuffersACK(PP_OK);
 336   }
 337 }
 338
 339 void PPB_Graphics3D_Impl::OnContextLost() {
 340   // Don't need to check for NULL from GetPluginInstance since when we're
 341   // bound, we know our instance is valid.
 342   if (bound_to_instance_) {
 343     HostGlobals::Get()->GetInstance(pp_instance())->BindGraphics(pp_instance(),
 344                                                                  0);
 345   }
 346
 347   // Send context lost to plugin. This may have been caused by a PPAPI call, so
 348   // avoid re-entering.
 349   base::ThreadTaskRunnerHandle::Get()->PostTask(
 350       FROM_HERE, base::Bind(&PPB_Graphics3D_Impl::SendContextLost,
 351                             weak_ptr_factory_.GetWeakPtr()));
 352 }
 353
 354 void PPB_Graphics3D_Impl::SendContextLost() {
 355   // By the time we run this, the instance may have been deleted, or in the
 356   // process of being deleted. Even in the latter case, we don't want to send a
 357   // callback after DidDestroy.
 358   PepperPluginInstanceImpl* instance =
 359       HostGlobals::Get()->GetInstance(pp_instance());
 360   if (!instance || !instance->container())
 361     return;
 362
 363   // This PPB_Graphics3D_Impl could be deleted during the call to
 364   // GetPluginInterface (which sends a sync message in some cases). We still
 365   // send the Graphics3DContextLost to the plugin; the instance may care about
 366   // that event even though this context has been destroyed.
 367   PP_Instance this_pp_instance = pp_instance();
 368   const PPP_Graphics3D* ppp_graphics_3d = static_cast<const PPP_Graphics3D*>(
 369       instance->module()->GetPluginInterface(PPP_GRAPHICS_3D_INTERFACE));
 370   // We have to check *again* that the instance exists, because it could have
 371   // been deleted during GetPluginInterface(). Even the PluginModule could be
 372   // deleted, but in that case, the instance should also be gone, so the
 373   // GetInstance check covers both cases.
 374   if (ppp_graphics_3d && HostGlobals::Get()->GetInstance(this_pp_instance))
 375     ppp_graphics_3d->Graphics3DContextLost(this_pp_instance);
 376 }
 377
 378 }  // namespace content