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/single_thread_task_runner.h"
  10 #include "components/view_manager/public/interfaces/command_buffer.mojom.h"
  11 #include "components/view_manager/public/interfaces/viewport_parameter_listener.mojom.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
  13
  14 namespace gpu {
  15 class SyncPointManager;
  16 }
  17
  18 namespace gles2 {
  19 class CommandBufferDriver;
  20 class CommandBufferImplObserver;
  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 mojo::ErrorHandler {
  28  public:
  29   CommandBufferImpl(
  30       mojo::InterfaceRequest<CommandBuffer> request,
  31       mojo::ViewportParameterListenerPtr listener,
  32       scoped_refptr<base::SingleThreadTaskRunner> control_task_runner,
  33       gpu::SyncPointManager* sync_point_manager,
  34       scoped_ptr<CommandBufferDriver> driver);
  35
  36   // mojo::CommandBuffer:
  37   void Initialize(mojo::CommandBufferSyncClientPtr sync_client,
  38                   mojo::CommandBufferSyncPointClientPtr sync_point_client,
  39                   mojo::CommandBufferLostContextObserverPtr loss_observer,
  40                   mojo::ScopedSharedBufferHandle shared_state) override;
  41   void SetGetBuffer(int32_t buffer) override;
  42   void Flush(int32_t put_offset) override;
  43   void MakeProgress(int32_t last_get_offset) override;
  44   void RegisterTransferBuffer(int32_t id,
  45                               mojo::ScopedSharedBufferHandle transfer_buffer,
  46                               uint32_t size) override;
  47   void DestroyTransferBuffer(int32_t id) override;
  48   void InsertSyncPoint(bool retire) override;
  49   void RetireSyncPoint(uint32_t sync_point) override;
  50   void Echo(const mojo::Callback<void()>& callback) override;
  51   void CreateImage(int32_t id,
  52                    mojo::ScopedHandle memory_handle,
  53                    int32_t type,
  54                    mojo::SizePtr size,
  55                    int32_t format,
  56                    int32_t internal_format) override;
  57   void DestroyImage(int32_t id) override;
  58
  59   void DidLoseContext();
  60
  61   void set_observer(CommandBufferImplObserver* observer) {
  62     observer_ = observer;
  63   }
  64
  65  private:
  66   class CommandBufferDriverClientImpl;
  67
  68   friend class base::DeleteHelper<CommandBufferImpl>;
  69
  70   ~CommandBufferImpl() override;
  71
  72   void BindToRequest(mojo::InterfaceRequest<CommandBuffer> request);
  73
  74   void UpdateVSyncParameters(base::TimeTicks timebase,
  75                              base::TimeDelta interval);
  76
  77   // mojo::ErrorHandler:
  78   void OnConnectionError() override;
  79
  80   scoped_refptr<gpu::SyncPointManager> sync_point_manager_;
  81   scoped_refptr<base::SingleThreadTaskRunner> driver_task_runner_;
  82   scoped_ptr<CommandBufferDriver> driver_;
  83   mojo::CommandBufferSyncPointClientPtr sync_point_client_;
  84   mojo::ViewportParameterListenerPtr viewport_parameter_listener_;
  85   mojo::Binding<CommandBuffer> binding_;
  86   CommandBufferImplObserver* observer_;
  87
  88   DISALLOW_COPY_AND_ASSIGN(CommandBufferImpl);
  89 };
  90
  91 }  // namespace gles2
  92
  93 #endif  // COMPONENTS_VIEW_MANAGER_GLES2_COMMAND_BUFFER_IMPL_H_