components/mus/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_MUS_GLES2_COMMAND_BUFFER_IMPL_H_
   6 #define COMPONENTS_MUS_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/mus/public/interfaces/command_buffer.mojom.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
  13
  14 namespace mus {
  15
  16 class CommandBufferDriver;
  17 class CommandBufferImplObserver;
  18 class GpuState;
  19
  20 // This class listens to the CommandBuffer message pipe on a low-latency thread
  21 // so that we can insert sync points without blocking on the GL driver. It
  22 // forwards most method calls to the CommandBufferDriver, which runs on the
  23 // same thread as the native viewport.
  24 class CommandBufferImpl : public mojo::CommandBuffer {
  25  public:
  26   CommandBufferImpl(mojo::InterfaceRequest<CommandBuffer> request,
  27                     scoped_refptr<GpuState> gpu_state,
  28                     scoped_ptr<CommandBufferDriver> driver);
  29
  30   // mojo::CommandBuffer:
  31   void Initialize(mojo::CommandBufferSyncClientPtr sync_client,
  32                   mojo::CommandBufferSyncPointClientPtr sync_point_client,
  33                   mojo::CommandBufferLostContextObserverPtr loss_observer,
  34                   mojo::ScopedSharedBufferHandle shared_state,
  35                   mojo::Array<int32_t> attribs) override;
  36   void SetGetBuffer(int32_t buffer) override;
  37   void Flush(int32_t put_offset) override;
  38   void MakeProgress(int32_t last_get_offset) override;
  39   void RegisterTransferBuffer(int32_t id,
  40                               mojo::ScopedSharedBufferHandle transfer_buffer,
  41                               uint32_t size) override;
  42   void DestroyTransferBuffer(int32_t id) override;
  43   void InsertSyncPoint(bool retire) override;
  44   void RetireSyncPoint(uint32_t sync_point) override;
  45   void Echo(const mojo::Callback<void()>& callback) override;
  46   void CreateImage(int32_t id,
  47                    mojo::ScopedHandle memory_handle,
  48                    int32_t type,
  49                    mojo::SizePtr size,
  50                    int32_t format,
  51                    int32_t internal_format) override;
  52   void DestroyImage(int32_t id) override;
  53
  54   void DidLoseContext();
  55
  56   void set_observer(CommandBufferImplObserver* observer) {
  57     observer_ = observer;
  58   }
  59
  60  private:
  61   class CommandBufferDriverClientImpl;
  62
  63   friend class base::DeleteHelper<CommandBufferImpl>;
  64
  65   ~CommandBufferImpl() override;
  66
  67   void BindToRequest(mojo::InterfaceRequest<CommandBuffer> request);
  68
  69   void OnConnectionError();
  70
  71   scoped_refptr<GpuState> gpu_state_;
  72   scoped_refptr<base::SingleThreadTaskRunner> driver_task_runner_;
  73   scoped_ptr<CommandBufferDriver> driver_;
  74   mojo::CommandBufferSyncPointClientPtr sync_point_client_;
  75   mojo::Binding<CommandBuffer> binding_;
  76   CommandBufferImplObserver* observer_;
  77   base::WeakPtrFactory<CommandBufferImpl> weak_ptr_factory_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(CommandBufferImpl);
  80 };
  81
  82 }  // namespace mus
  83
  84 #endif  // COMPONENTS_MUS_GLES2_COMMAND_BUFFER_IMPL_H_