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// Copyright 2014 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 COMPONENTS_GLES2_COMMAND_BUFFER_IMPL_H_
#define COMPONENTS_GLES2_COMMAND_BUFFER_IMPL_H_
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/single_thread_task_runner.h"
#include "components/gpu/public/interfaces/command_buffer.mojom.h"
#include "components/gpu/public/interfaces/viewport_parameter_listener.mojom.h"
#include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
namespace gpu {
class SyncPointManager;
}
namespace gles2 {
class CommandBufferDriver;
// This class listens to the CommandBuffer message pipe on a low-latency thread
// so that we can insert sync points without blocking on the GL driver. It
// forwards most method calls to the CommandBufferDriver, which runs on the
// same thread as the native viewport.
class CommandBufferImpl : public mojo::CommandBuffer {
public:
CommandBufferImpl(
mojo::InterfaceRequest<CommandBuffer> request,
mojo::ViewportParameterListenerPtr listener,
scoped_refptr<base::SingleThreadTaskRunner> control_task_runner,
gpu::SyncPointManager* sync_point_manager,
scoped_ptr<CommandBufferDriver> driver);
~CommandBufferImpl() override;
void Initialize(mojo::CommandBufferSyncClientPtr sync_client,
mojo::CommandBufferSyncPointClientPtr sync_point_client,
mojo::CommandBufferLostContextObserverPtr loss_observer,
mojo::ScopedSharedBufferHandle shared_state) override;
void SetGetBuffer(int32_t buffer) override;
void Flush(int32_t put_offset) override;
void MakeProgress(int32_t last_get_offset) override;
void RegisterTransferBuffer(int32_t id,
mojo::ScopedSharedBufferHandle transfer_buffer,
uint32_t size) override;
void DestroyTransferBuffer(int32_t id) override;
void InsertSyncPoint(bool retire) override;
void RetireSyncPoint(uint32_t sync_point) override;
void Echo(const mojo::Callback<void()>& callback) override;
void DidLoseContext();
void UpdateVSyncParameters(base::TimeTicks timebase,
base::TimeDelta interval);
private:
void BindToRequest(mojo::InterfaceRequest<CommandBuffer> request);
scoped_refptr<gpu::SyncPointManager> sync_point_manager_;
scoped_refptr<base::SingleThreadTaskRunner> driver_task_runner_;
scoped_ptr<CommandBufferDriver> driver_;
mojo::CommandBufferSyncPointClientPtr sync_point_client_;
mojo::ViewportParameterListenerPtr viewport_parameter_listener_;
mojo::StrongBinding<CommandBuffer> binding_;
base::WeakPtrFactory<CommandBufferImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(CommandBufferImpl);
};
} // namespace gles2
#endif // COMPONENTS_GLES2_COMMAND_BUFFER_IMPL_H_
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