components/view_manager/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_VIEW_MANAGER_GLES2_COMMAND_BUFFER_IMPL_H_
   6 #define COMPONENTS_VIEW_MANAGER_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/view_manager/public/interfaces/command_buffer.mojom.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
  13
  14 namespace gles2 {
  15 class CommandBufferDriver;
  16 class CommandBufferImplObserver;
  17 class GpuState;
  18
  19 // This class listens to the CommandBuffer message pipe on a low-latency thread
  20 // so that we can insert sync points without blocking on the GL driver. It
  21 // forwards most method calls to the CommandBufferDriver, which runs on the
  22 // same thread as the native viewport.
  23 class CommandBufferImpl : public mojo::CommandBuffer {
  24  public:
  25   CommandBufferImpl(mojo::InterfaceRequest<CommandBuffer> request,
  26                     scoped_refptr<GpuState> gpu_state,
  27                     scoped_ptr<CommandBufferDriver> driver);
  28
  29   // mojo::CommandBuffer:
  30   void Initialize(mojo::CommandBufferSyncClientPtr sync_client,
  31                   mojo::CommandBufferSyncPointClientPtr sync_point_client,
  32                   mojo::CommandBufferLostContextObserverPtr loss_observer,
  33                   mojo::ScopedSharedBufferHandle shared_state) override;
  34   void SetGetBuffer(int32_t buffer) override;
  35   void Flush(int32_t put_offset) override;
  36   void MakeProgress(int32_t last_get_offset) override;
  37   void RegisterTransferBuffer(int32_t id,
  38                               mojo::ScopedSharedBufferHandle transfer_buffer,
  39                               uint32_t size) override;
  40   void DestroyTransferBuffer(int32_t id) override;
  41   void InsertSyncPoint(bool retire) override;
  42   void RetireSyncPoint(uint32_t sync_point) override;
  43   void Echo(const mojo::Callback<void()>& callback) override;
  44   void CreateImage(int32_t id,
  45                    mojo::ScopedHandle memory_handle,
  46                    int32_t type,
  47                    mojo::SizePtr size,
  48                    int32_t format,
  49                    int32_t internal_format) override;
  50   void DestroyImage(int32_t id) override;
  51
  52   void DidLoseContext();
  53
  54   void set_observer(CommandBufferImplObserver* observer) {
  55     observer_ = observer;
  56   }
  57
  58  private:
  59   class CommandBufferDriverClientImpl;
  60
  61   friend class base::DeleteHelper<CommandBufferImpl>;
  62
  63   ~CommandBufferImpl() override;
  64
  65   void BindToRequest(mojo::InterfaceRequest<CommandBuffer> request);
  66
  67   void OnConnectionError();
  68
  69   scoped_refptr<GpuState> gpu_state_;
  70   scoped_refptr<base::SingleThreadTaskRunner> driver_task_runner_;
  71   scoped_ptr<CommandBufferDriver> driver_;
  72   mojo::CommandBufferSyncPointClientPtr sync_point_client_;
  73   mojo::Binding<CommandBuffer> binding_;
  74   CommandBufferImplObserver* observer_;
  75   base::WeakPtrFactory<CommandBufferImpl> weak_ptr_factory_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(CommandBufferImpl);
  78 };
  79
  80 }  // namespace gles2
  81
  82 #endif  // COMPONENTS_VIEW_MANAGER_GLES2_COMMAND_BUFFER_IMPL_H_