gpu: Add IOSurface backed GpuMemoryBuffer implementation.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 388 matching lines @@
   base::FilePath media_path;
   PathService::Get(DIR_MEDIA_LIBS, &media_path);
   if (!media_path.empty())
     media::InitializeMediaLibrary(media_path);
 
   memory_pressure_listener_.reset(new base::MemoryPressureListener(
       base::Bind(&RenderThreadImpl::OnMemoryPressure, base::Unretained(this))));
 
   renderer_process_id_ = base::kNullProcessId;
 
+  // AllocateGpuMemoryBuffer must be used exclusively on one thread but
+  // it doesn't have to be the same thread RenderThreadImpl is created on.
+  allocate_gpu_memory_buffer_thread_checker_.DetachFromThread();
+
   TRACE_EVENT_END_ETW("RenderThreadImpl::Init", 0, "");
 }
 
 RenderThreadImpl::~RenderThreadImpl() {
 }
 
 void RenderThreadImpl::Shutdown() {
   FOR_EACH_OBSERVER(
       RenderProcessObserver, observers_, OnRenderProcessShutdown());
 
@@ skipping 644 matching lines @@
 }
 
 void RenderThreadImpl::DeleteImage(int32 image_id, int32 sync_point) {
   NOTREACHED();
 }
 
 scoped_ptr<gfx::GpuMemoryBuffer> RenderThreadImpl::AllocateGpuMemoryBuffer(
     size_t width,
     size_t height,
     unsigned internalformat) {
+  DCHECK(allocate_gpu_memory_buffer_thread_checker_.CalledOnValidThread());
+
   if (!GpuMemoryBufferImpl::IsFormatValid(internalformat))
     return scoped_ptr<gfx::GpuMemoryBuffer>();
 
-  size_t size = width * height *
-      GpuMemoryBufferImpl::BytesPerPixel(internalformat);
-  if (size > static_cast<size_t>(std::numeric_limits<int>::max()))
-    return scoped_ptr<gfx::GpuMemoryBuffer>();
-
   gfx::GpuMemoryBufferHandle handle;
   bool success;
   IPC::Message* message =
-      new ChildProcessHostMsg_SyncAllocateGpuMemoryBuffer(size, &handle);
+      new ChildProcessHostMsg_SyncAllocateGpuMemoryBuffer(width,
+                                                          height,
+                                                          internalformat,
+                                                          &handle);
 
   // Allow calling this from the compositor thread.
   if (base::MessageLoop::current() == message_loop())
     success = ChildThread::Send(message);
   else
     success = sync_message_filter()->Send(message);
 
   if (!success)
     return scoped_ptr<gfx::GpuMemoryBuffer>();
 
-  // Currently, shared memory is the only supported buffer type.
-  if (handle.type != gfx::SHARED_MEMORY_BUFFER)
-    return scoped_ptr<gfx::GpuMemoryBuffer>();
-
-  if (!base::SharedMemory::IsHandleValid(handle.handle))
-    return scoped_ptr<gfx::GpuMemoryBuffer>();
-
-  return make_scoped_ptr<gfx::GpuMemoryBuffer>(
-      new GpuMemoryBufferImpl(
-          make_scoped_ptr(new base::SharedMemory(handle.handle, false)),
-          width,
-          height,
-          internalformat));
+  return GpuMemoryBufferImpl::Create(
+      handle,
+      gfx::Size(width, height),
+      internalformat).PassAs<gfx::GpuMemoryBuffer>();
 }
 
 void RenderThreadImpl::DoNotSuspendWebKitSharedTimer() {
   suspend_webkit_shared_timer_ = false;
 }
 
 void RenderThreadImpl::DoNotNotifyWebKitOfModalLoop() {
   notify_webkit_of_modal_loop_ = false;
 }
 
@@ skipping 252 matching lines @@
   if (!gamepad_shared_memory_reader_)
     gamepad_shared_memory_reader_.reset(new GamepadSharedMemoryReader);
   gamepad_shared_memory_reader_->SampleGamepads(*data);
 }
 
 base::ProcessId RenderThreadImpl::renderer_process_id() const {
   return renderer_process_id_;
 }
 
 }  // namespace content