components/gles2/command_buffer_impl.h

   1 // Copyright 2014 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 #ifndef COMPONENTS_GLES2_COMMAND_BUFFER_IMPL_H_
   6 #define COMPONENTS_GLES2_COMMAND_BUFFER_IMPL_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "base/single_thread_task_runner.h"
  11 #include "components/gpu/public/interfaces/command_buffer.mojom.h"
  12 #include "components/gpu/public/interfaces/viewport_parameter_listener.mojom.h"
  13 #include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
  14
  15 namespace gpu {
  16 class SyncPointManager;
  17 }
  18
  19 namespace gles2 {
  20 class CommandBufferDriver;
  21
  22 // This class listens to the CommandBuffer message pipe on a low-latency thread
  23 // so that we can insert sync points without blocking on the GL driver. It
  24 // forwards most method calls to the CommandBufferDriver, which runs on the
  25 // same thread as the native viewport.
  26 class CommandBufferImpl : public mojo::CommandBuffer {
  27  public:
  28   CommandBufferImpl(
  29       mojo::InterfaceRequest<CommandBuffer> request,
  30       mojo::ViewportParameterListenerPtr listener,
  31       scoped_refptr<base::SingleThreadTaskRunner> control_task_runner,
  32       gpu::SyncPointManager* sync_point_manager,
  33       scoped_ptr<CommandBufferDriver> driver);
  34   ~CommandBufferImpl() override;
  35
  36   void Initialize(mojo::CommandBufferSyncClientPtr sync_client,
  37                   mojo::CommandBufferSyncPointClientPtr sync_point_client,
  38                   mojo::CommandBufferLostContextObserverPtr loss_observer,
  39                   mojo::ScopedSharedBufferHandle shared_state) override;
  40   void SetGetBuffer(int32_t buffer) override;
  41   void Flush(int32_t put_offset) override;
  42   void MakeProgress(int32_t last_get_offset) override;
  43   void RegisterTransferBuffer(int32_t id,
  44                               mojo::ScopedSharedBufferHandle transfer_buffer,
  45                               uint32_t size) override;
  46   void DestroyTransferBuffer(int32_t id) override;
  47   void InsertSyncPoint(bool retire) override;
  48   void RetireSyncPoint(uint32_t sync_point) override;
  49   void Echo(const mojo::Callback<void()>& callback) override;
  50
  51   void DidLoseContext();
  52   void UpdateVSyncParameters(base::TimeTicks timebase,
  53                              base::TimeDelta interval);
  54
  55  private:
  56   void BindToRequest(mojo::InterfaceRequest<CommandBuffer> request);
  57
  58   scoped_refptr<gpu::SyncPointManager> sync_point_manager_;
  59   scoped_refptr<base::SingleThreadTaskRunner> driver_task_runner_;
  60   scoped_ptr<CommandBufferDriver> driver_;
  61   mojo::CommandBufferSyncPointClientPtr sync_point_client_;
  62   mojo::ViewportParameterListenerPtr viewport_parameter_listener_;
  63   mojo::StrongBinding<CommandBuffer> binding_;
  64
  65   base::WeakPtrFactory<CommandBufferImpl> weak_factory_;
  66   DISALLOW_COPY_AND_ASSIGN(CommandBufferImpl);
  67 };
  68
  69 }  // namespace gles2
  70
  71 #endif  // COMPONENTS_GLES2_COMMAND_BUFFER_IMPL_H_