Completed the implementation for PPB_Graphics3D interface.

- Mostly copied from the implementations for PPB_Surface3D and PPB_Context3D.
- Added the proxy implementation
- Refactored common code between host and plugin side into a common class.

I will send the changes to bind Graphics3D with Instance and OpenGLES2 interface in a separate patch.

BUG=86370,78087

Review URL: http://codereview.chromium.org/6824006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@92885 0039d316-1c4b-4281-b951-d872f2087c98

18 files changed, 1233 insertions, 1 deletions

diff --git a/ppapi/c/dev/ppb_graphics_3d_trusted_dev.h b/ppapi/c/dev/ppb_graphics_3d_trusted_dev.h
new file mode 100644
index 0000000..faae1d4
--- /dev/null
+++ b/ppapi/c/dev/ppb_graphics_3d_trusted_dev.h
@@ -0,0 +1,104 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_C_DEV_PPB_GRAPHICS_3D_TRUSTED_DEV_H_
+#define PPAPI_C_DEV_PPB_GRAPHICS_3D_TRUSTED_DEV_H_
+
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_stdint.h"
+
+#define PPB_GRAPHICS_3D_TRUSTED_DEV_INTERFACE_0_1 \
+    "PPB_Graphics3DTrusted(Dev);0.1"
+#define PPB_GRAPHICS_3D_TRUSTED_DEV_INTERFACE \
+    PPB_GRAPHICS_3D_TRUSTED_DEV_INTERFACE_0_1
+
+typedef enum {
+  PPB_GRAPHICS3D_TRUSTED_ERROR_OK,
+  PPB_GRAPHICS3D_TRUSTED_ERROR_GENERICERROR,
+  PPB_GRAPHICS3D_TRUSTED_ERROR_INVALIDARGUMENTS,
+  PPB_GRAPHICS3D_TRUSTED_ERROR_INVALIDSIZE,
+  PPB_GRAPHICS3D_TRUSTED_ERROR_LOSTCONTEXT,
+  PPB_GRAPHICS3D_TRUSTED_ERROR_OUTOFBOUNDS,
+  PPB_GRAPHICS3D_TRUSTED_ERROR_UNKNOWNCOMMAND
+} PPB_Graphics3DTrustedError;
+
+struct PP_Graphics3DTrustedState {
+  // Size of the command buffer in command buffer entries.
+  int32_t num_entries;
+
+  // The offset (in entries) from which the reader is reading.
+  int32_t get_offset;
+
+  // The offset (in entries) at which the writer is writing.
+  int32_t put_offset;
+
+  // The current token value. This is used by the writer to defer
+  // changes to shared memory objects until the reader has reached a certain
+  // point in the command buffer. The reader is responsible for updating the
+  // token value, for example in response to an asynchronous set token command
+  // embedded in the command buffer. The default token value is zero.
+  int32_t token;
+
+  // Error status.
+  PPB_Graphics3DTrustedError error;
+
+  // Generation index of this state. The generation index is incremented every
+  // time a new state is retrieved from the command processor, so that
+  // consistency can be kept even if IPC messages are processed out-of-order.
+  uint32_t generation;
+};
+
+struct PPB_Graphics3DTrusted_Dev {
+  // Creates a raw Graphics3D resource. A raw Graphics3D is intended to be used
+  // with the trusted interface, through the command buffer (for proxying).
+  PP_Resource (*CreateRaw)(PP_Instance instance_id,
+                           PP_Config3D_Dev config,
+                           PP_Resource share_context,
+                           const int32_t* attrib_list);
+
+  // Initializes the command buffer with the given size.
+  PP_Bool (*InitCommandBuffer)(PP_Resource context_id, int32_t size);
+
+  // Gets the ring buffer for the command buffer.
+  PP_Bool (*GetRingBuffer)(PP_Resource context_id,
+                           int* shm_handle,
+                           uint32_t* shm_size);
+
+  // Returns the current state.
+  struct PP_Graphics3DTrustedState (*GetState)(PP_Resource context);
+
+  // Create a transfer buffer and return a handle that uniquely
+  // identifies it or -1 on error.
+  int32_t (*CreateTransferBuffer)(PP_Resource context, uint32_t size);
+
+  // Destroy a transfer buffer and recycle the handle.
+  PP_Bool (*DestroyTransferBuffer)(PP_Resource context, int32_t id);
+
+  // Get the transfer buffer associated with a handle.
+  PP_Bool (*GetTransferBuffer)(PP_Resource context,
+                               int32_t id,
+                               int* shm_handle,
+                               uint32_t* shm_size);
+
+  // The writer calls this to update its put offset.
+  PP_Bool (*Flush)(PP_Resource context, int32_t put_offset);
+
+  // The writer calls this to update its put offset. This function returns the
+  // reader's most recent get offset. Does not return until after the put offset
+  // change callback has been invoked.
+  struct PP_Graphics3DTrustedState (*FlushSync)(PP_Resource context,
+                                                int32_t put_offset);
+
+  // Like FlushSync, but returns before processing commands if the get offset is
+  // different than last_known_get. Allows synchronization with the command
+  // processor without forcing immediate command execution.
+  struct PP_Graphics3DTrustedState (*FlushSyncFast)(PP_Resource context,
+                                                    int32_t put_offset,
+                                                    int32_t last_known_get);
+};
+
+#endif  // PPAPI_C_DEV_PPB_GRAPHICS_3D_TRUSTED_DEV_H_
+
diff --git a/ppapi/ppapi_cpp.gypi b/ppapi/ppapi_cpp.gypi
index 80d0966..8ef3001 100644
--- a/ppapi/ppapi_cpp.gypi
+++ b/ppapi/ppapi_cpp.gypi
@@ -70,6 +70,7 @@
         'c/dev/ppb_font_dev.h',
         'c/dev/ppb_fullscreen_dev.h',
         'c/dev/ppb_graphics_3d_dev.h',
+        'c/dev/ppb_graphics_3d_trusted_dev.h',
         'c/dev/ppb_memory_dev.h',
         'c/dev/ppb_opengles_dev.h',
         'c/dev/ppb_scrollbar_dev.h',
diff --git a/ppapi/ppapi_proxy.gypi b/ppapi/ppapi_proxy.gypi
index db9dc29..550dec8 100644
--- a/ppapi/ppapi_proxy.gypi
+++ b/ppapi/ppapi_proxy.gypi
@@ -96,6 +96,8 @@
         'proxy/ppb_font_proxy.h',
         'proxy/ppb_graphics_2d_proxy.cc',
         'proxy/ppb_graphics_2d_proxy.h',
+        'proxy/ppb_graphics_3d_proxy.cc',
+        'proxy/ppb_graphics_3d_proxy.h',
         'proxy/ppb_image_data_proxy.cc',
         'proxy/ppb_image_data_proxy.h',
         'proxy/ppb_input_event_proxy.cc',
diff --git a/ppapi/ppapi_shared.gypi b/ppapi/ppapi_shared.gypi
index b86c77e..04cb41f 100644
--- a/ppapi/ppapi_shared.gypi
+++ b/ppapi/ppapi_shared.gypi
@@ -12,6 +12,7 @@
         '../base/base.gyp:base',
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../build/temp_gyp/googleurl.gyp:googleurl',
+        '../gpu/gpu.gyp:gles2_implementation',
         '../skia/skia.gyp:skia',
         '../third_party/icu/icu.gyp:icuuc',
         '../ui/gfx/surface/surface.gyp:surface',
@@ -35,6 +36,8 @@
         'shared_impl/font_impl.h',
         'shared_impl/function_group_base.cc',
         'shared_impl/function_group_base.h',
+        'shared_impl/graphics_3d_impl.cc',
+        'shared_impl/graphics_3d_impl.h',
         'shared_impl/image_data_impl.cc',
         'shared_impl/image_data_impl.h',
         'shared_impl/input_event_impl.cc',
@@ -107,6 +110,7 @@
         'thunk/ppb_graphics_2d_thunk.cc',
         'thunk/ppb_graphics_3d_api.h',
         'thunk/ppb_graphics_3d_thunk.cc',
+        'thunk/ppb_graphics_3d_trusted_thunk.cc',
         'thunk/ppb_image_data_api.h',
         'thunk/ppb_image_data_thunk.cc',
         'thunk/ppb_image_data_trusted_thunk.cc',
diff --git a/ppapi/proxy/interface_id.h b/ppapi/proxy/interface_id.h
index 26ef71f6a..ba31aaa 100644
--- a/ppapi/proxy/interface_id.h
+++ b/ppapi/proxy/interface_id.h
@@ -36,6 +36,7 @@ enum InterfaceID {
   INTERFACE_ID_PPB_FLASH_TCPSOCKET,
   INTERFACE_ID_PPB_FONT,
   INTERFACE_ID_PPB_GRAPHICS_2D,
+  INTERFACE_ID_PPB_GRAPHICS_3D,
   INTERFACE_ID_PPB_IMAGE_DATA,
   INTERFACE_ID_PPB_INSTANCE,
   INTERFACE_ID_PPB_INSTANCE_PRIVATE,
diff --git a/ppapi/proxy/plugin_resource.h b/ppapi/proxy/plugin_resource.h
index eff74b4..8646189 100644
--- a/ppapi/proxy/plugin_resource.h
+++ b/ppapi/proxy/plugin_resource.h
@@ -26,6 +26,7 @@
   F(FlashNetConnector) \
   F(Font) \
   F(Graphics2D) \
+  F(Graphics3D) \
   F(ImageData) \
   F(MockResource) \
   F(PrivateFontFile) \
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index c516514..41853ae 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -202,6 +202,11 @@ IPC_MESSAGE_ROUTED2(PpapiMsg_PPBGraphics2D_FlushACK,
                     pp::proxy::HostResource /* graphics_2d */,
                     int32_t /* pp_error */)
 
+// PPB_Graphics3D.
+IPC_MESSAGE_ROUTED2(PpapiMsg_PPBGraphics3D_SwapBuffersACK,
+                    pp::proxy::HostResource /* graphics_3d */,
+                    int32_t /* pp_error */)
+
 // PPB_Surface3D.
 IPC_MESSAGE_ROUTED2(PpapiMsg_PPBSurface3D_SwapBuffersACK,
                     pp::proxy::HostResource /* surface_3d */,
@@ -633,6 +638,50 @@ IPC_MESSAGE_ROUTED2(PpapiHostMsg_PPBGraphics2D_ReplaceContents,
 IPC_MESSAGE_ROUTED1(PpapiHostMsg_PPBGraphics2D_Flush,
                     pp::proxy::HostResource /* graphics_2d */)
 
+// PPB_Graphics3D.
+IPC_SYNC_MESSAGE_ROUTED3_1(PpapiHostMsg_PPBGraphics3D_Create,
+                           PP_Instance /* instance */,
+                           int32_t /* config */,
+                           std::vector<int32_t> /* attrib_list */,
+                           pp::proxy::HostResource /* result */)
+
+IPC_SYNC_MESSAGE_ROUTED2_1(PpapiHostMsg_PPBGraphics3D_InitCommandBuffer,
+                           pp::proxy::HostResource /* context */,
+                           int32 /* size */,
+                           base::SharedMemoryHandle /* ring_buffer */)
+
+IPC_SYNC_MESSAGE_ROUTED1_1(PpapiHostMsg_PPBGraphics3D_GetState,
+                           pp::proxy::HostResource /* context */,
+                           gpu::CommandBuffer::State /* state */)
+
+IPC_SYNC_MESSAGE_ROUTED3_1(PpapiHostMsg_PPBGraphics3D_Flush,
+                           pp::proxy::HostResource /* context */,
+                           int32 /* put_offset */,
+                           int32 /* last_known_get */,
+                           gpu::CommandBuffer::State /* state */)
+
+IPC_MESSAGE_ROUTED2(PpapiHostMsg_PPBGraphics3D_AsyncFlush,
+                    pp::proxy::HostResource /* context */,
+                    int32 /* put_offset */)
+
+IPC_SYNC_MESSAGE_ROUTED2_1(PpapiHostMsg_PPBGraphics3D_CreateTransferBuffer,
+                           pp::proxy::HostResource /* context */,
+                           int32 /* size */,
+                           int32 /* id */)
+
+IPC_SYNC_MESSAGE_ROUTED2_0(PpapiHostMsg_PPBGraphics3D_DestroyTransferBuffer,
+                           pp::proxy::HostResource /* context */,
+                           int32 /* id */)
+
+IPC_SYNC_MESSAGE_ROUTED2_2(PpapiHostMsg_PPBGraphics3D_GetTransferBuffer,
+                           pp::proxy::HostResource /* context */,
+                           int32 /* id */,
+                           base::SharedMemoryHandle /* transfer_buffer */,
+                           uint32 /* size */)
+
+IPC_MESSAGE_ROUTED1(PpapiHostMsg_PPBGraphics3D_SwapBuffers,
+                    pp::proxy::HostResource /* graphics_3d */)
+
 // PPB_Instance.
 IPC_SYNC_MESSAGE_ROUTED1_1(PpapiHostMsg_PPBInstance_GetWindowObject,
                            PP_Instance /* instance */,
diff --git a/ppapi/proxy/ppb_graphics_3d_proxy.cc b/ppapi/proxy/ppb_graphics_3d_proxy.cc
new file mode 100644
index 0000000..d3947e4
--- /dev/null
+++ b/ppapi/proxy/ppb_graphics_3d_proxy.cc
@@ -0,0 +1,612 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/proxy/ppb_graphics_3d_proxy.h"
+
+#include "gpu/command_buffer/client/gles2_implementation.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/proxy/enter_proxy.h"
+#include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/resource_creation_api.h"
+#include "ppapi/thunk/thunk.h"
+
+using ppapi::thunk::EnterFunctionNoLock;
+using ppapi::thunk::EnterResourceNoLock;
+using ppapi::thunk::PPB_Graphics3D_API;
+using ppapi::thunk::ResourceCreationAPI;
+
+namespace pp {
+namespace proxy {
+
+namespace {
+const int32 kCommandBufferSize = 1024 * 1024;
+const int32 kTransferBufferSize = 1024 * 1024;
+
+class CommandBuffer : public gpu::CommandBuffer {
+ public:
+  CommandBuffer(const HostResource& resource, PluginDispatcher* dispatcher);
+  virtual ~CommandBuffer();
+
+  // gpu::CommandBuffer implementation:
+  virtual bool Initialize(int32 size);
+  virtual bool Initialize(base::SharedMemory* buffer, int32 size);
+  virtual gpu::Buffer GetRingBuffer();
+  virtual State GetState();
+  virtual void Flush(int32 put_offset);
+  virtual State FlushSync(int32 put_offset, int32 last_known_get);
+  virtual void SetGetOffset(int32 get_offset);
+  virtual int32 CreateTransferBuffer(size_t size, int32 id_request);
+  virtual int32 RegisterTransferBuffer(base::SharedMemory* shared_memory,
+                                       size_t size,
+                                       int32 id_request);
+  virtual void DestroyTransferBuffer(int32 id);
+  virtual gpu::Buffer GetTransferBuffer(int32 handle);
+  virtual void SetToken(int32 token);
+  virtual void SetParseError(gpu::error::Error error);
+  virtual void SetContextLostReason(gpu::error::ContextLostReason reason);
+
+ private:
+  bool Send(IPC::Message* msg);
+  void UpdateState(const gpu::CommandBuffer::State& state);
+
+  int32 num_entries_;
+  scoped_ptr<base::SharedMemory> ring_buffer_;
+
+  typedef base::hash_map<int32, gpu::Buffer> TransferBufferMap;
+  TransferBufferMap transfer_buffers_;
+
+  State last_state_;
+
+  HostResource resource_;
+  PluginDispatcher* dispatcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(CommandBuffer);
+};
+
+CommandBuffer::CommandBuffer(const HostResource& resource,
+                             PluginDispatcher* dispatcher)
+    : num_entries_(0),
+      resource_(resource),
+      dispatcher_(dispatcher) {
+}
+
+CommandBuffer::~CommandBuffer() {
+  // Delete all the locally cached shared memory objects, closing the handle
+  // in this process.
+  for (TransferBufferMap::iterator it = transfer_buffers_.begin();
+       it != transfer_buffers_.end(); ++it) {
+    delete it->second.shared_memory;
+    it->second.shared_memory = NULL;
+  }
+}
+
+bool CommandBuffer::Initialize(int32 size) {
+  DCHECK(!ring_buffer_.get());
+
+  // Initialize the service. Assuming we are sandboxed, the GPU
+  // process is responsible for duplicating the handle. This might not be true
+  // for NaCl.
+  base::SharedMemoryHandle handle;
+  if (Send(new PpapiHostMsg_PPBGraphics3D_InitCommandBuffer(
+          INTERFACE_ID_PPB_GRAPHICS_3D, resource_, size, &handle)) &&
+      base::SharedMemory::IsHandleValid(handle)) {
+    ring_buffer_.reset(new base::SharedMemory(handle, false));
+    if (ring_buffer_->Map(size)) {
+      num_entries_ = size / sizeof(gpu::CommandBufferEntry);
+      return true;
+    }
+
+    ring_buffer_.reset();
+  }
+
+  return false;
+}
+
+bool CommandBuffer::Initialize(base::SharedMemory* buffer, int32 size) {
+  // Not implemented in proxy.
+  NOTREACHED();
+  return false;
+}
+
+gpu::Buffer CommandBuffer::GetRingBuffer() {
+  // Return locally cached ring buffer.
+  gpu::Buffer buffer;
+  buffer.ptr = ring_buffer_->memory();
+  buffer.size = num_entries_ * sizeof(gpu::CommandBufferEntry);
+  buffer.shared_memory = ring_buffer_.get();
+  return buffer;
+}
+
+gpu::CommandBuffer::State CommandBuffer::GetState() {
+  // Send will flag state with lost context if IPC fails.
+  if (last_state_.error == gpu::error::kNoError) {
+    gpu::CommandBuffer::State state;
+    if (Send(new PpapiHostMsg_PPBGraphics3D_GetState(
+             INTERFACE_ID_PPB_GRAPHICS_3D, resource_, &state)))
+      UpdateState(state);
+  }
+
+  return last_state_;
+}
+
+void CommandBuffer::Flush(int32 put_offset) {
+  if (last_state_.error != gpu::error::kNoError)
+    return;
+
+  IPC::Message* message = new PpapiHostMsg_PPBGraphics3D_AsyncFlush(
+      INTERFACE_ID_PPB_GRAPHICS_3D, resource_, put_offset);
+
+  // Do not let a synchronous flush hold up this message. If this handler is
+  // deferred until after the synchronous flush completes, it will overwrite the
+  // cached last_state_ with out-of-date data.
+  message->set_unblock(true);
+  Send(message);
+}
+
+gpu::CommandBuffer::State CommandBuffer::FlushSync(int32 put_offset,
+                                                   int32 last_known_get) {
+  if (last_known_get == last_state_.get_offset) {
+    // Send will flag state with lost context if IPC fails.
+    if (last_state_.error == gpu::error::kNoError) {
+      gpu::CommandBuffer::State state;
+      if (Send(new PpapiHostMsg_PPBGraphics3D_Flush(
+              INTERFACE_ID_PPB_GRAPHICS_3D, resource_, put_offset,
+              last_known_get, &state)))
+        UpdateState(state);
+    }
+  } else {
+    Flush(put_offset);
+  }
+
+  return last_state_;
+}
+
+void CommandBuffer::SetGetOffset(int32 get_offset) {
+  // Not implemented in proxy.
+  NOTREACHED();
+}
+
+int32 CommandBuffer::CreateTransferBuffer(size_t size, int32 id_request) {
+  if (last_state_.error == gpu::error::kNoError) {
+    int32 id;
+    if (Send(new PpapiHostMsg_PPBGraphics3D_CreateTransferBuffer(
+            INTERFACE_ID_PPB_GRAPHICS_3D, resource_, size, &id))) {
+      return id;
+    }
+  }
+
+  return -1;
+}
+
+int32 CommandBuffer::RegisterTransferBuffer(
+    base::SharedMemory* shared_memory,
+    size_t size,
+    int32 id_request) {
+  // Not implemented in proxy.
+  NOTREACHED();
+  return -1;
+}
+
+void CommandBuffer::DestroyTransferBuffer(int32 id) {
+  if (last_state_.error != gpu::error::kNoError)
+    return;
+
+  // Remove the transfer buffer from the client side4 cache.
+  TransferBufferMap::iterator it = transfer_buffers_.find(id);
+  DCHECK(it != transfer_buffers_.end());
+
+  // Delete the shared memory object, closing the handle in this process.
+  delete it->second.shared_memory;
+
+  transfer_buffers_.erase(it);
+
+  Send(new PpapiHostMsg_PPBGraphics3D_DestroyTransferBuffer(
+      INTERFACE_ID_PPB_GRAPHICS_3D, resource_, id));
+}
+
+gpu::Buffer CommandBuffer::GetTransferBuffer(int32 id) {
+  if (last_state_.error != gpu::error::kNoError)
+    return gpu::Buffer();
+
+  // Check local cache to see if there is already a client side shared memory
+  // object for this id.
+  TransferBufferMap::iterator it = transfer_buffers_.find(id);
+  if (it != transfer_buffers_.end()) {
+    return it->second;
+  }
+
+  // Assuming we are in the renderer process, the service is responsible for
+  // duplicating the handle. This might not be true for NaCl.
+  base::SharedMemoryHandle handle;
+  uint32 size;
+  if (!Send(new PpapiHostMsg_PPBGraphics3D_GetTransferBuffer(
+          INTERFACE_ID_PPB_GRAPHICS_3D, resource_, id, &handle, &size))) {
+    return gpu::Buffer();
+  }
+
+  // Cache the transfer buffer shared memory object client side.
+  scoped_ptr<base::SharedMemory> shared_memory(
+      new base::SharedMemory(handle, false));
+
+  // Map the shared memory on demand.
+  if (!shared_memory->memory()) {
+    if (!shared_memory->Map(size)) {
+      return gpu::Buffer();
+    }
+  }
+
+  gpu::Buffer buffer;
+  buffer.ptr = shared_memory->memory();
+  buffer.size = size;
+  buffer.shared_memory = shared_memory.release();
+  transfer_buffers_[id] = buffer;
+
+  return buffer;
+}
+
+void CommandBuffer::SetToken(int32 token) {
+  NOTREACHED();
+}
+
+void CommandBuffer::SetParseError(gpu::error::Error error) {
+  NOTREACHED();
+}
+
+void CommandBuffer::SetContextLostReason(
+    gpu::error::ContextLostReason reason) {
+  NOTREACHED();
+}
+
+bool CommandBuffer::Send(IPC::Message* msg) {
+  DCHECK(last_state_.error == gpu::error::kNoError);
+
+  if (dispatcher_->Send(msg))
+    return true;
+
+  last_state_.error = gpu::error::kLostContext;
+  return false;
+}
+
+void CommandBuffer::UpdateState(const gpu::CommandBuffer::State& state) {
+  // Handle wraparound. It works as long as we don't have more than 2B state
+  // updates in flight across which reordering occurs.
+  if (state.generation - last_state_.generation < 0x80000000U)
+    last_state_ = state;
+}
+
+base::SharedMemoryHandle TransportSHMHandleFromInt(Dispatcher* dispatcher,
+                                                   int shm_handle) {
+  // TODO(piman): Change trusted interface to return a PP_FileHandle, those
+  // casts are ugly.
+  base::PlatformFile source =
+#if defined(OS_WIN)
+      reinterpret_cast<HANDLE>(static_cast<intptr_t>(shm_handle));
+#elif defined(OS_POSIX)
+      shm_handle;
+#else
+  #error Not implemented.
+#endif
+  // Don't close the handle, it doesn't belong to us.
+  return dispatcher->ShareHandleWithRemote(source, false);
+}
+
+PP_Graphics3DTrustedState GetErrorState() {
+  PP_Graphics3DTrustedState error_state = { 0 };
+  error_state.error = PPB_GRAPHICS3D_TRUSTED_ERROR_GENERICERROR;
+  return error_state;
+}
+
+gpu::CommandBuffer::State GPUStateFromPPState(
+    const PP_Graphics3DTrustedState& s) {
+  gpu::CommandBuffer::State state;
+  state.num_entries = s.num_entries;
+  state.get_offset = s.get_offset;
+  state.put_offset = s.put_offset;
+  state.token = s.token;
+  state.error = static_cast<gpu::error::Error>(s.error);
+  state.generation = s.generation;
+  return state;
+}
+
+InterfaceProxy* CreateGraphics3DProxy(Dispatcher* dispatcher,
+                                      const void* target_interface) {
+  return new PPB_Graphics3D_Proxy(dispatcher, target_interface);
+}
+}  // namespace
+
+Graphics3D::Graphics3D(const HostResource& resource)
+    : PluginResource(resource) {
+}
+
+Graphics3D::~Graphics3D() {
+  DestroyGLES2Impl();
+}
+
+bool Graphics3D::Init() {
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance());
+  if (!dispatcher)
+    return false;
+
+  command_buffer_.reset(new CommandBuffer(host_resource(), dispatcher));
+
+  return CreateGLES2Impl(kCommandBufferSize, kTransferBufferSize);
+}
+
+PP_Bool Graphics3D::InitCommandBuffer(int32_t size) {
+  return PP_FALSE;
+}
+
+PP_Bool Graphics3D::GetRingBuffer(int* shm_handle, uint32_t* shm_size) {
+  return PP_FALSE;
+}
+
+PP_Graphics3DTrustedState Graphics3D::GetState() {
+  return GetErrorState();
+}
+
+PP_Bool Graphics3D::Flush(int32_t put_offset) {
+  return PP_FALSE;
+}
+
+PP_Graphics3DTrustedState Graphics3D::FlushSync(int32_t put_offset) {
+  return GetErrorState();
+}
+
+int32_t Graphics3D::CreateTransferBuffer(uint32_t size) {
+  return PP_FALSE;
+}
+
+PP_Bool Graphics3D::DestroyTransferBuffer(int32_t id) {
+  return PP_FALSE;
+}
+
+PP_Bool Graphics3D::GetTransferBuffer(int32_t id,
+                                      int* shm_handle,
+                                      uint32_t* shm_size) {
+  return PP_FALSE;
+}
+
+PP_Graphics3DTrustedState Graphics3D::FlushSyncFast(int32_t put_offset,
+                                                    int32_t last_known_get) {
+  return GetErrorState();
+}
+
+gpu::CommandBuffer* Graphics3D::GetCommandBuffer() {
+  return command_buffer_.get();
+}
+
+int32 Graphics3D::DoSwapBuffers() {
+  IPC::Message* msg = new PpapiHostMsg_PPBGraphics3D_SwapBuffers(
+      INTERFACE_ID_PPB_GRAPHICS_3D, host_resource());
+  msg->set_unblock(true);
+  GetDispatcher()->Send(msg);
+
+  gles2_impl()->SwapBuffers();
+  return PP_OK_COMPLETIONPENDING;
+}
+
+PPB_Graphics3D_Proxy::PPB_Graphics3D_Proxy(Dispatcher* dispatcher,
+                                           const void* target_interface)
+    : InterfaceProxy(dispatcher, target_interface) {
+}
+
+PPB_Graphics3D_Proxy::~PPB_Graphics3D_Proxy() {
+}
+
+// static
+const InterfaceProxy::Info* PPB_Graphics3D_Proxy::GetInfo() {
+  static const Info info = {
+    ::ppapi::thunk::GetPPB_Graphics3D_Thunk(),
+    PPB_GRAPHICS_3D_DEV_INTERFACE,
+    INTERFACE_ID_PPB_GRAPHICS_3D,
+    false,
+    &CreateGraphics3DProxy,
+  };
+  return &info;
+}
+
+// static
+PP_Resource PPB_Graphics3D_Proxy::CreateProxyResource(
+    PP_Instance instance,
+    PP_Config3D_Dev config,
+    PP_Resource share_context,
+    const int32_t* attrib_list) {
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return PP_ERROR_BADARGUMENT;
+
+  // TODO(alokp): Support shared context.
+  DCHECK_EQ(0, share_context);
+  if (share_context != 0)
+    return 0;
+
+  std::vector<int32_t> attribs;
+  if (attrib_list) {
+    for (const int32_t* attr = attrib_list;
+         *attr != PP_GRAPHICS3DATTRIB_NONE;
+         ++attr) {
+      attribs.push_back(*attr);
+    }
+    attribs.push_back(PP_GRAPHICS3DATTRIB_NONE);
+  }
+
+  HostResource result;
+  dispatcher->Send(new PpapiHostMsg_PPBGraphics3D_Create(
+      INTERFACE_ID_PPB_GRAPHICS_3D, instance, config, attribs, &result));
+  if (result.is_null())
+    return 0;
+
+  linked_ptr<Graphics3D> graphics_3d(new Graphics3D(result));
+  if (!graphics_3d->Init())
+    return 0;
+
+  return PluginResourceTracker::GetInstance()->AddResource(graphics_3d);
+}
+
+bool PPB_Graphics3D_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PPB_Graphics3D_Proxy, msg)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_Create,
+                        OnMsgCreate)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_InitCommandBuffer,
+                        OnMsgInitCommandBuffer)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_GetState,
+                        OnMsgGetState)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_Flush,
+                        OnMsgFlush)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_AsyncFlush,
+                        OnMsgAsyncFlush)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_CreateTransferBuffer,
+                        OnMsgCreateTransferBuffer)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_DestroyTransferBuffer,
+                        OnMsgDestroyTransferBuffer)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_GetTransferBuffer,
+                        OnMsgGetTransferBuffer)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics3D_SwapBuffers,
+                        OnMsgSwapBuffers)
+
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPBGraphics3D_SwapBuffersACK,
+                        OnMsgSwapBuffersACK)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+
+  IPC_END_MESSAGE_MAP()
+  // FIXME(brettw) handle bad messages!
+  return handled;
+}
+
+void PPB_Graphics3D_Proxy::OnMsgCreate(PP_Instance instance,
+                                       PP_Config3D_Dev config,
+                                       const std::vector<int32_t>& attribs,
+                                       HostResource* result) {
+  if (attribs.empty() || attribs.back() != 0)
+    return;  // Bad message.
+
+  EnterFunctionNoLock<ResourceCreationAPI> enter(instance, true);
+  if (enter.succeeded()) {
+    result->SetHostResource(
+        instance,
+        enter.functions()->CreateGraphics3DRaw(instance, config, 0,
+                                               &attribs.front()));
+  }
+}
+
+void PPB_Graphics3D_Proxy::OnMsgInitCommandBuffer(
+    const HostResource& context,
+    int32 size,
+    base::SharedMemoryHandle* ring_buffer) {
+  *ring_buffer = base::SharedMemory::NULLHandle();
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  if (enter.failed())
+    return;
+
+  if (!enter.object()->InitCommandBuffer(size))
+    return;
+
+  int shm_handle;
+  uint32_t shm_size;
+  if (!enter.object()->GetRingBuffer(&shm_handle, &shm_size))
+    return;
+  *ring_buffer = TransportSHMHandleFromInt(dispatcher(), shm_handle);
+}
+
+void PPB_Graphics3D_Proxy::OnMsgGetState(const HostResource& context,
+                                         gpu::CommandBuffer::State* state) {
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  if (enter.failed())
+    return;
+  PP_Graphics3DTrustedState pp_state = enter.object()->GetState();
+  *state = GPUStateFromPPState(pp_state);
+}
+
+void PPB_Graphics3D_Proxy::OnMsgFlush(const HostResource& context,
+                                      int32 put_offset,
+                                      int32 last_known_get,
+                                      gpu::CommandBuffer::State* state) {
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  if (enter.failed())
+    return;
+  PP_Graphics3DTrustedState pp_state = enter.object()->FlushSyncFast(
+      put_offset, last_known_get);
+  *state = GPUStateFromPPState(pp_state);
+}
+
+void PPB_Graphics3D_Proxy::OnMsgAsyncFlush(const HostResource& context,
+                                           int32 put_offset) {
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  if (enter.succeeded())
+    enter.object()->Flush(put_offset);
+}
+
+void PPB_Graphics3D_Proxy::OnMsgCreateTransferBuffer(
+    const HostResource& context,
+    int32 size,
+    int32* id) {
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  if (enter.succeeded())
+    *id = enter.object()->CreateTransferBuffer(size);
+  else
+    *id = 0;
+}
+
+void PPB_Graphics3D_Proxy::OnMsgDestroyTransferBuffer(
+    const HostResource& context,
+    int32 id) {
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  if (enter.succeeded())
+    enter.object()->DestroyTransferBuffer(id);
+}
+
+void PPB_Graphics3D_Proxy::OnMsgGetTransferBuffer(
+    const HostResource& context,
+    int32 id,
+    base::SharedMemoryHandle* transfer_buffer,
+    uint32* size) {
+  *transfer_buffer = base::SharedMemory::NULLHandle();
+  *size = 0;
+
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  int shm_handle = 0;
+  uint32_t shm_size = 0;
+  if (enter.succeeded() &&
+      enter.object()->GetTransferBuffer(id, &shm_handle, &shm_size)) {
+    *transfer_buffer = TransportSHMHandleFromInt(dispatcher(), shm_handle);
+    *size = shm_size;
+  }
+}
+
+void PPB_Graphics3D_Proxy::OnMsgSwapBuffers(const HostResource& context) {
+  CompletionCallback callback = callback_factory_.NewOptionalCallback(
+      &PPB_Graphics3D_Proxy::SendSwapBuffersACKToPlugin, context);
+
+  EnterHostFromHostResource<PPB_Graphics3D_API> enter(context);
+  int32_t result = PP_ERROR_BADRESOURCE;
+  if (enter.succeeded())
+    result = enter.object()->SwapBuffers(callback.pp_completion_callback());
+  if (result != PP_OK_COMPLETIONPENDING) {
+    // There was some error, so we won't get a flush callback. We need to now
+    // issue the ACK to the plugin hears about the error. This will also clean
+    // up the data associated with the callback.
+    callback.Run(result);
+  }
+}
+
+void PPB_Graphics3D_Proxy::OnMsgSwapBuffersACK(const HostResource& resource,
+                                              int32_t pp_error) {
+  EnterPluginFromHostResource<PPB_Graphics3D_API> enter(resource);
+  if (enter.succeeded())
+    static_cast<Graphics3D*>(enter.object())->SwapBuffersACK(pp_error);
+}
+
+void PPB_Graphics3D_Proxy::SendSwapBuffersACKToPlugin(
+    int32_t result,
+    const HostResource& context) {
+  dispatcher()->Send(new PpapiMsg_PPBGraphics3D_SwapBuffersACK(
+      INTERFACE_ID_PPB_GRAPHICS_3D, context, result));
+}
+
+}  // namespace proxy
+}  // namespace pp
+
diff --git a/ppapi/proxy/ppb_graphics_3d_proxy.h b/ppapi/proxy/ppb_graphics_3d_proxy.h
new file mode 100644
index 0000000..6ff3a10
--- /dev/null
+++ b/ppapi/proxy/ppb_graphics_3d_proxy.h
@@ -0,0 +1,125 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_PROXY_PPB_GRAPHICS_3D_PROXY_H_
+#define PPAPI_PROXY_PPB_GRAPHICS_3D_PROXY_H_
+
+#include <vector>
+
+#include "base/shared_memory.h"
+#include "gpu/command_buffer/common/command_buffer.h"
+#include "ppapi/c/dev/pp_graphics_3d_dev.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/cpp/completion_callback.h"
+#include "ppapi/proxy/interface_proxy.h"
+#include "ppapi/proxy/plugin_resource.h"
+#include "ppapi/proxy/proxy_non_thread_safe_ref_count.h"
+#include "ppapi/shared_impl/graphics_3d_impl.h"
+
+namespace pp {
+namespace proxy {
+
+class HostResource;
+
+class Graphics3D : public PluginResource,
+                   public ppapi::Graphics3DImpl {
+ public:
+  explicit Graphics3D(const HostResource& resource);
+  virtual ~Graphics3D();
+
+  bool Init();
+
+  // PluginResource overrides.
+  virtual ::ppapi::thunk::PPB_Graphics3D_API* AsPPB_Graphics3D_API() OVERRIDE {
+    return this;
+  }
+
+  // Graphics3DTrusted API. These are not implemented in the proxy.
+  virtual PP_Bool InitCommandBuffer(int32_t size) OVERRIDE;
+  virtual PP_Bool GetRingBuffer(int* shm_handle, uint32_t* shm_size) OVERRIDE;
+  virtual PP_Graphics3DTrustedState GetState() OVERRIDE;
+  virtual PP_Bool Flush(int32_t put_offset) OVERRIDE;
+  virtual PP_Graphics3DTrustedState FlushSync(int32_t put_offset) OVERRIDE;
+  virtual int32_t CreateTransferBuffer(uint32_t size) OVERRIDE;
+  virtual PP_Bool DestroyTransferBuffer(int32_t id) OVERRIDE;
+  virtual PP_Bool GetTransferBuffer(int32_t id,
+                                    int* shm_handle,
+                                    uint32_t* shm_size) OVERRIDE;
+  virtual PP_Graphics3DTrustedState FlushSyncFast(
+      int32_t put_offset,
+      int32_t last_known_get) OVERRIDE;
+
+ protected:
+  // ppapi::Graphics3DImpl overrides.
+  virtual gpu::CommandBuffer* GetCommandBuffer() OVERRIDE;
+  virtual int32 DoSwapBuffers() OVERRIDE;
+
+ private:
+  scoped_ptr<gpu::CommandBuffer> command_buffer_;
+
+  DISALLOW_COPY_AND_ASSIGN(Graphics3D);
+};
+
+class PPB_Graphics3D_Proxy : public InterfaceProxy {
+ public:
+  PPB_Graphics3D_Proxy(Dispatcher* dispatcher, const void* target_interface);
+  virtual ~PPB_Graphics3D_Proxy();
+
+  static const Info* GetInfo();
+
+  static PP_Resource CreateProxyResource(PP_Instance instance,
+                                         PP_Config3D_Dev config,
+                                         PP_Resource share_context,
+                                         const int32_t* attrib_list);
+
+  const PPB_Graphics3D_Dev* ppb_graphics_3d_target() const {
+    return static_cast<const PPB_Graphics3D_Dev*>(target_interface());
+  }
+
+  // InterfaceProxy implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg);
+
+ private:
+  void OnMsgCreate(PP_Instance instance,
+                   PP_Config3D_Dev config,
+                   const std::vector<int32_t>& attribs,
+                   HostResource* result);
+  void OnMsgInitCommandBuffer(const HostResource& context,
+                              int32 size,
+                              base::SharedMemoryHandle* ring_buffer);
+  void OnMsgGetState(const HostResource& context,
+                     gpu::CommandBuffer::State* state);
+  void OnMsgFlush(const HostResource& context,
+                  int32 put_offset,
+                  int32 last_known_get,
+                  gpu::CommandBuffer::State* state);
+  void OnMsgAsyncFlush(const HostResource& context,
+                       int32 put_offset);
+  void OnMsgCreateTransferBuffer(const HostResource& context,
+                                 int32 size,
+                                 int32* id);
+  void OnMsgDestroyTransferBuffer(const HostResource& context,
+                                  int32 id);
+  void OnMsgGetTransferBuffer(const HostResource& context,
+                              int32 id,
+                              base::SharedMemoryHandle* transfer_buffer,
+                              uint32* size);
+  void OnMsgSwapBuffers(const HostResource& context);
+  // Renderer->plugin message handlers.
+  void OnMsgSwapBuffersACK(const HostResource& context, int32_t pp_error);
+
+  void SendSwapBuffersACKToPlugin(int32_t result,
+                                  const HostResource& context);
+
+  CompletionCallbackFactory<PPB_Graphics3D_Proxy,
+                            ProxyNonThreadSafeRefCount> callback_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(PPB_Graphics3D_Proxy);
+};
+
+}  // namespace proxy
+}  // namespace pp
+
+#endif  // PPAPI_PROXY_PPB_GRAPHICS_3D_PROXY_H_
+
diff --git a/ppapi/proxy/resource_creation_proxy.cc b/ppapi/proxy/resource_creation_proxy.cc
index 20e6735..c498002 100644
--- a/ppapi/proxy/resource_creation_proxy.cc
+++ b/ppapi/proxy/resource_creation_proxy.cc
@@ -25,6 +25,7 @@
 #include "ppapi/proxy/ppb_flash_tcp_socket_proxy.h"
 #include "ppapi/proxy/ppb_font_proxy.h"
 #include "ppapi/proxy/ppb_graphics_2d_proxy.h"
+#include "ppapi/proxy/ppb_graphics_3d_proxy.h"
 #include "ppapi/proxy/ppb_image_data_proxy.h"
 #include "ppapi/proxy/ppb_surface_3d_proxy.h"
 #include "ppapi/proxy/ppb_url_loader_proxy.h"
@@ -193,7 +194,17 @@ PP_Resource ResourceCreationProxy::CreateGraphics3D(
     PP_Config3D_Dev config,
     PP_Resource share_context,
     const int32_t* attrib_list) {
-  NOTIMPLEMENTED();  // Not proxied yet.
+  return PPB_Graphics3D_Proxy::CreateProxyResource(
+      instance, config, share_context, attrib_list);
+}
+
+PP_Resource ResourceCreationProxy::CreateGraphics3DRaw(
+    PP_Instance instance,
+    PP_Config3D_Dev config,
+    PP_Resource share_context,
+    const int32_t* attrib_list) {
+  // Not proxied. The raw creation function is used only in the implementation
+  // of the proxy on the host side.
   return 0;
 }
 
diff --git a/ppapi/proxy/resource_creation_proxy.h b/ppapi/proxy/resource_creation_proxy.h
index e6b609f..4336f85 100644
--- a/ppapi/proxy/resource_creation_proxy.h
+++ b/ppapi/proxy/resource_creation_proxy.h
@@ -76,6 +76,10 @@ class ResourceCreationProxy : public ::ppapi::FunctionGroupBase,
                                        PP_Config3D_Dev config,
                                        PP_Resource share_context,
                                        const int32_t* attrib_list) OVERRIDE;
+  virtual PP_Resource CreateGraphics3DRaw(PP_Instance instance,
+                                          PP_Config3D_Dev config,
+                                          PP_Resource share_context,
+                                          const int32_t* attrib_list) OVERRIDE;
   virtual PP_Resource CreateImageData(PP_Instance instance,
                                       PP_ImageDataFormat format,
                                       const PP_Size& size,
diff --git a/ppapi/shared_impl/DEPS b/ppapi/shared_impl/DEPS
index 512b07b..013d2acf 100644
--- a/ppapi/shared_impl/DEPS
+++ b/ppapi/shared_impl/DEPS
@@ -1,5 +1,6 @@
 include_rules = [
   "+base",
+  "+gpu",
   "+skia",
   "+webkit/glue",
 
diff --git a/ppapi/shared_impl/graphics_3d_impl.cc b/ppapi/shared_impl/graphics_3d_impl.cc
new file mode 100644
index 0000000..e7f5c70
--- /dev/null
+++ b/ppapi/shared_impl/graphics_3d_impl.cc
@@ -0,0 +1,104 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/shared_impl/graphics_3d_impl.h"
+
+#include "gpu/command_buffer/client/gles2_cmd_helper.h"
+#include "gpu/command_buffer/client/gles2_implementation.h"
+#include "ppapi/c/pp_errors.h"
+
+namespace ppapi {
+
+Graphics3DImpl::Graphics3DImpl()
+    : transfer_buffer_id_(-1),
+      swap_callback_(PP_BlockUntilComplete()) {
+}
+
+Graphics3DImpl::~Graphics3DImpl() {
+  // Make sure that GLES2 implementation has already been destroyed.
+  DCHECK_EQ(transfer_buffer_id_, -1);
+  DCHECK(!gles2_helper_.get());
+  DCHECK(!gles2_impl_.get());
+}
+
+int32_t Graphics3DImpl::GetAttribs(int32_t* attrib_list) {
+  // TODO(alokp): Implement me.
+  return PP_ERROR_FAILED;
+}
+
+int32_t Graphics3DImpl::SetAttribs(int32_t* attrib_list) {
+  // TODO(alokp): Implement me.
+  return PP_ERROR_FAILED;
+}
+
+int32_t Graphics3DImpl::SwapBuffers(PP_CompletionCallback callback) {
+  if (!callback.func) {
+    // Blocking SwapBuffers isn't supported (since we have to be on the main
+    // thread).
+    return PP_ERROR_BADARGUMENT;
+  }
+
+  if (HasPendingSwap()) {
+    // Already a pending SwapBuffers that hasn't returned yet.
+    return PP_ERROR_INPROGRESS;
+  }
+
+  swap_callback_ = callback;
+  return DoSwapBuffers();
+}
+
+void Graphics3DImpl::SwapBuffersACK(int32_t pp_error) {
+  DCHECK(HasPendingSwap());
+  PP_RunAndClearCompletionCallback(&swap_callback_, pp_error);
+}
+
+bool Graphics3DImpl::CreateGLES2Impl(int32 command_buffer_size,
+                                     int32 transfer_buffer_size) {
+  gpu::CommandBuffer* command_buffer = GetCommandBuffer();
+  DCHECK(command_buffer);
+
+  // Create the GLES2 helper, which writes the command buffer protocol.
+  gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer));
+  if (!gles2_helper_->Initialize(command_buffer_size))
+    return false;
+
+  // Create a transfer buffer used to copy resources between the renderer
+  // process and the GPU process.
+  transfer_buffer_id_ =
+      command_buffer->CreateTransferBuffer(transfer_buffer_size, -1);
+  if (transfer_buffer_id_ < 0)
+    return false;
+
+  // Map the buffer into the renderer process's address space.
+  gpu::Buffer transfer_buffer =
+      command_buffer->GetTransferBuffer(transfer_buffer_id_);
+  if (!transfer_buffer.ptr)
+    return false;
+
+  // Create the object exposing the OpenGL API.
+  gles2_impl_.reset(new gpu::gles2::GLES2Implementation(
+      gles2_helper_.get(),
+      transfer_buffer.size,
+      transfer_buffer.ptr,
+      transfer_buffer_id_,
+      false));
+
+  return true;
+}
+
+void Graphics3DImpl::DestroyGLES2Impl() {
+  gles2_impl_.reset();
+
+  if (transfer_buffer_id_ != -1) {
+    gpu::CommandBuffer* command_buffer = GetCommandBuffer();
+    DCHECK(command_buffer);
+    command_buffer->DestroyTransferBuffer(transfer_buffer_id_);
+    transfer_buffer_id_ = -1;
+  }
+
+  gles2_helper_.reset();
+}
+
+}  // namespace ppapi
+
diff --git a/ppapi/shared_impl/graphics_3d_impl.h b/ppapi/shared_impl/graphics_3d_impl.h
new file mode 100644
index 0000000..41a71af
--- /dev/null
+++ b/ppapi/shared_impl/graphics_3d_impl.h
@@ -0,0 +1,63 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
+#define PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/thunk/ppb_graphics_3d_api.h"
+
+namespace gpu {
+class CommandBuffer;
+namespace gles2 {
+class GLES2CmdHelper;
+class GLES2Implementation;
+}  // namespace gles2
+}  // namespace gpu.
+
+namespace ppapi {
+
+class Graphics3DImpl : public thunk::PPB_Graphics3D_API {
+ public:
+  // PPB_Graphics3D_API implementation.
+  virtual int32_t GetAttribs(int32_t* attrib_list) OVERRIDE;
+  virtual int32_t SetAttribs(int32_t* attrib_list) OVERRIDE;
+  virtual int32_t SwapBuffers(PP_CompletionCallback callback) OVERRIDE;
+
+  gpu::gles2::GLES2Implementation* gles2_impl() {
+    return gles2_impl_.get();
+  }
+
+  // Sends swap-buffers notification to the plugin.
+  void SwapBuffersACK(int32_t pp_error);
+
+ protected:
+  Graphics3DImpl();
+  virtual ~Graphics3DImpl();
+
+  virtual gpu::CommandBuffer* GetCommandBuffer() = 0;
+  virtual int32 DoSwapBuffers() = 0;
+
+  bool HasPendingSwap() { return swap_callback_.func != NULL; }
+  bool CreateGLES2Impl(int32 command_buffer_size,
+                       int32 transfer_buffer_size);
+  void DestroyGLES2Impl();
+
+ private:
+  int32 transfer_buffer_id_;
+  scoped_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
+  scoped_ptr<gpu::gles2::GLES2Implementation> gles2_impl_;
+
+  // Callback that needs to be executed when swap-buffers is completed.
+  PP_CompletionCallback swap_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(Graphics3DImpl);
+};
+
+}  // namespace ppapi
+
+#endif  // PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
+
diff --git a/ppapi/tests/all_c_includes.h b/ppapi/tests/all_c_includes.h
index 7b95220..eae0b86 100644
--- a/ppapi/tests/all_c_includes.h
+++ b/ppapi/tests/all_c_includes.h
@@ -25,6 +25,7 @@
 #include "ppapi/c/dev/ppb_font_dev.h"
 #include "ppapi/c/dev/ppb_fullscreen_dev.h"
 #include "ppapi/c/dev/ppb_graphics_3d_dev.h"
+#include "ppapi/c/dev/ppb_graphics_3d_trusted_dev.h"
 #include "ppapi/c/dev/ppb_layer_compositor_dev.h"
 #include "ppapi/c/dev/ppb_memory_dev.h"
 #include "ppapi/c/dev/ppb_opengles_dev.h"
diff --git a/ppapi/thunk/ppb_graphics_3d_api.h b/ppapi/thunk/ppb_graphics_3d_api.h
index 99fe935..8871d6b 100644
--- a/ppapi/thunk/ppb_graphics_3d_api.h
+++ b/ppapi/thunk/ppb_graphics_3d_api.h
@@ -6,6 +6,7 @@
 #define PPAPI_THUNK_PPB_GRAPHICS_3D_API_H_
 
 #include "ppapi/c/dev/ppb_graphics_3d_dev.h"
+#include "ppapi/c/dev/ppb_graphics_3d_trusted_dev.h"
 
 namespace ppapi {
 namespace thunk {
@@ -14,9 +15,28 @@ class PPB_Graphics3D_API {
  public:
   virtual ~PPB_Graphics3D_API() {}
 
+  // Graphics3D API.
   virtual int32_t GetAttribs(int32_t* attrib_list) = 0;
   virtual int32_t SetAttribs(int32_t* attrib_list) = 0;
   virtual int32_t SwapBuffers(PP_CompletionCallback callback) = 0;
+
+  // Graphics3DTrusted API.
+  virtual PP_Bool InitCommandBuffer(int32_t size) = 0;
+  virtual PP_Bool GetRingBuffer(int* shm_handle,
+                                uint32_t* shm_size) = 0;
+  virtual PP_Graphics3DTrustedState GetState() = 0;
+  virtual int32_t CreateTransferBuffer(uint32_t size) = 0;
+  virtual PP_Bool DestroyTransferBuffer(int32_t id) = 0;
+  virtual PP_Bool GetTransferBuffer(int32_t id,
+                                    int* shm_handle,
+                                    uint32_t* shm_size) = 0;
+  virtual PP_Bool Flush(int32_t put_offset) = 0;
+  virtual PP_Graphics3DTrustedState FlushSync(int32_t put_offset) = 0;
+  virtual PP_Graphics3DTrustedState FlushSyncFast(int32_t put_offset,
+                                                  int32_t last_known_get) = 0;
+
+  // TODO(alokp): Implement GLESChromiumTextureMapping here after
+  // deprecating Context3D.
 };
 
 }  // namespace thunk
diff --git a/ppapi/thunk/ppb_graphics_3d_trusted_thunk.cc b/ppapi/thunk/ppb_graphics_3d_trusted_thunk.cc
new file mode 100644
index 0000000..1910dcd
--- /dev/null
+++ b/ppapi/thunk/ppb_graphics_3d_trusted_thunk.cc
@@ -0,0 +1,125 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/thunk/thunk.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_graphics_3d_api.h"
+#include "ppapi/thunk/resource_creation_api.h"
+
+namespace ppapi {
+namespace thunk {
+
+namespace {
+
+typedef EnterResource<PPB_Graphics3D_API> EnterGraphics3D;
+
+PP_Graphics3DTrustedState GetErrorState() {
+  PP_Graphics3DTrustedState error_state = { 0 };
+  error_state.error = PPB_GRAPHICS3D_TRUSTED_ERROR_GENERICERROR;
+  return error_state;
+}
+
+PP_Resource CreateRaw(PP_Instance instance,
+                      PP_Config3D_Dev config,
+                      PP_Resource share_context,
+                      const int32_t* attrib_list) {
+  EnterFunction<ResourceCreationAPI> enter(instance, true);
+  if (enter.failed())
+    return 0;
+  return enter.functions()->CreateGraphics3DRaw(
+      instance, config, share_context, attrib_list);
+}
+
+PP_Bool InitCommandBuffer(PP_Resource context, int32_t size) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->InitCommandBuffer(size);
+}
+
+PP_Bool GetRingBuffer(PP_Resource context,
+                      int* shm_handle,
+                      uint32_t* shm_size) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->GetRingBuffer(shm_handle, shm_size);
+}
+
+PP_Graphics3DTrustedState GetState(PP_Resource context) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return GetErrorState();
+  return enter.object()->GetState();
+}
+
+int32_t CreateTransferBuffer(PP_Resource context, uint32_t size) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->CreateTransferBuffer(size);
+}
+
+PP_Bool DestroyTransferBuffer(PP_Resource context, int32_t id) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->DestroyTransferBuffer(id);
+}
+
+PP_Bool GetTransferBuffer(PP_Resource context,
+                          int32_t id,
+                          int* shm_handle,
+                          uint32_t* shm_size) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->GetTransferBuffer(id, shm_handle, shm_size);
+}
+
+PP_Bool Flush(PP_Resource context, int32_t put_offset) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return PP_FALSE;
+  return enter.object()->Flush(put_offset);
+}
+
+PP_Graphics3DTrustedState FlushSync(PP_Resource context, int32_t put_offset) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return GetErrorState();
+  return enter.object()->FlushSync(put_offset);
+}
+
+PP_Graphics3DTrustedState FlushSyncFast(PP_Resource context,
+                                        int32_t put_offset,
+                                        int32_t last_known_get) {
+  EnterGraphics3D enter(context, true);
+  if (enter.failed())
+    return GetErrorState();
+  return enter.object()->FlushSyncFast(put_offset, last_known_get);
+}
+
+const PPB_Graphics3DTrusted_Dev g_ppb_graphics_3d_trusted_thunk = {
+  &CreateRaw,
+  &InitCommandBuffer,
+  &GetRingBuffer,
+  &GetState,
+  &CreateTransferBuffer,
+  &DestroyTransferBuffer,
+  &GetTransferBuffer,
+  &Flush,
+  &FlushSync,
+  &FlushSyncFast,
+};
+
+}  // namespace
+
+const PPB_Graphics3DTrusted_Dev* GetPPB_Graphics3DTrusted_Thunk() {
+  return &g_ppb_graphics_3d_trusted_thunk;
+}
+
+}  // namespace thunk
+}  // namespace ppapi
+
diff --git a/ppapi/thunk/resource_creation_api.h b/ppapi/thunk/resource_creation_api.h
index 0925b59..15641c3 100644
--- a/ppapi/thunk/resource_creation_api.h
+++ b/ppapi/thunk/resource_creation_api.h
@@ -75,6 +75,10 @@ class ResourceCreationAPI {
                                        PP_Config3D_Dev config,
                                        PP_Resource share_context,
                                        const int32_t* attrib_list) = 0;
+  virtual PP_Resource CreateGraphics3DRaw(PP_Instance instance,
+                                          PP_Config3D_Dev config,
+                                          PP_Resource share_context,
+                                          const int32_t* attrib_list) = 0;
   virtual PP_Resource CreateImageData(PP_Instance instance,
                                       PP_ImageDataFormat format,
                                       const PP_Size& size,