Implemented new fence syncs which replaces the old sync points.

components/mus/gles2/command_buffer_driver.cc

 // Copyright 2013 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 "components/mus/gles2/command_buffer_driver.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "base/process/process_handle.h"
 #include "components/mus/gles2/command_buffer_type_conversions.h"
 #include "components/mus/gles2/gpu_memory_tracker.h"
 #include "components/mus/gles2/gpu_state.h"
 #include "components/mus/gles2/mojo_buffer_backing.h"
-#include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/common/value_state.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "gpu/command_buffer/service/gpu_scheduler.h"
 #include "gpu/command_buffer/service/image_factory.h"
 #include "gpu/command_buffer/service/image_manager.h"
 #include "gpu/command_buffer/service/mailbox_manager.h"
 #include "gpu/command_buffer/service/memory_tracking.h"
 #include "gpu/command_buffer/service/sync_point_manager.h"
@@ skipping 84 matching lines @@
   DCHECK(result);
 
   decoder_.reset(::gpu::gles2::GLES2Decoder::Create(context_group.get()));
   scheduler_.reset(new gpu::GpuScheduler(command_buffer_.get(), decoder_.get(),
                                          decoder_.get()));
   decoder_->set_engine(scheduler_.get());
   decoder_->SetResizeCallback(
       base::Bind(&CommandBufferDriver::OnResize, base::Unretained(this)));
   decoder_->SetWaitSyncPointCallback(base::Bind(
       &CommandBufferDriver::OnWaitSyncPoint, base::Unretained(this)));
+  decoder_->SetFenceSyncReleaseCallback(base::Bind(
+      &CommandBufferDriver::OnFenceSyncRelease, base::Unretained(this)));
+  decoder_->SetWaitFenceSyncCallback(base::Bind(
+      &CommandBufferDriver::OnWaitFenceSync, base::Unretained(this)));
 
   gpu::gles2::DisallowedFeatures disallowed_features;
 
   const bool offscreen = true;
   std::vector<int32> attrib_vector;
   attrib_helper.Serialize(&attrib_vector);
   if (!decoder_->Initialize(surface_, context_, offscreen, gfx::Size(1, 1),
                             disallowed_features, attrib_vector))
     return false;
 
@@ skipping 156 matching lines @@
     return true;
   if (gpu_state_->sync_point_manager()->IsSyncPointRetired(sync_point))
     return true;
   scheduler_->SetScheduled(false);
   gpu_state_->sync_point_manager()->AddSyncPointCallback(
       sync_point, base::Bind(&CommandBufferDriver::OnSyncPointRetired,
                              weak_factory_.GetWeakPtr()));
   return scheduler_->scheduled();
 }
 
+void CommandBufferDriver::OnFenceSyncRelease(uint64_t release) {
+  // TODO(dyen): Implement once CommandBufferID has been figured out and
+  // we have a SyncPointClient. It would probably look like what is commented
+  // out below:
+  // if (!sync_point_client_->client_state()->IsFenceSyncReleased(release))
+  //   sync_point_client_->ReleaseFenceSync(release);
+  NOTIMPLEMENTED();
+}
+
+bool CommandBufferDriver::OnWaitFenceSync(
+    gpu::CommandBufferNamespace namespace_id,
+    uint64_t command_buffer_id,
+    uint64_t release) {
+  gpu::SyncPointManager* sync_point_manager = gpu_state_->sync_point_manager();
+  DCHECK(sync_point_manager);
+
+  scoped_refptr<gpu::SyncPointClientState> release_state =
+      sync_point_manager->GetSyncPointClientState(namespace_id,
+                                                  command_buffer_id);
+
+  if (!release_state)
+    return true;
+
+  if (release_state->IsFenceSyncReleased(release))
+    return true;
+
+  // TODO(dyen): Implement once CommandBufferID has been figured out and
+  // we have a SyncPointClient. It would probably look like what is commented
+  // out below:
+  // scheduler_->SetScheduled(false);
+  // sync_point_client_->Wait(
+  //     release_state.get(),
+  //     release,
+  //     base::Bind(&CommandBufferDriver::OnSyncPointRetired,
+  //                weak_factory_.GetWeakPtr()));
+  NOTIMPLEMENTED();
+  return scheduler_->scheduled();
+}
+
 void CommandBufferDriver::OnSyncPointRetired() {
   scheduler_->SetScheduled(true);
 }
 
 void CommandBufferDriver::OnContextLost(uint32_t reason) {
   loss_observer_->DidLoseContext(reason);
   client_->DidLoseContext();
 }
 
 void CommandBufferDriver::DestroyDecoder() {
   if (decoder_) {
     bool have_context = decoder_->MakeCurrent();
     decoder_->Destroy(have_context);
     decoder_.reset();
   }
 }
 
 }  // namespace mus