components/mus/gles2/command_buffer_driver.h

   1 // Copyright 2013 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_DRIVER_H_
   6 #define COMPONENTS_MUS_GLES2_COMMAND_BUFFER_DRIVER_H_
   7
   8 #include "base/callback.h"
   9 #include "base/macros.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/single_thread_task_runner.h"
  13 #include "base/timer/timer.h"
  14 #include "components/mus/public/interfaces/command_buffer.mojom.h"
  15 #include "ui/gfx/geometry/size.h"
  16
  17 namespace gpu {
  18 class CommandBufferService;
  19 class GpuScheduler;
  20 class GpuControlService;
  21 namespace gles2 {
  22 class GLES2Decoder;
  23 }
  24 }
  25
  26 namespace gfx {
  27 class GLContext;
  28 class GLSurface;
  29 }
  30
  31 namespace mus {
  32
  33 class GpuState;
  34
  35 // This class receives CommandBuffer messages on the same thread as the native
  36 // viewport.
  37 class CommandBufferDriver {
  38  public:
  39   class Client {
  40    public:
  41     virtual ~Client();
  42     virtual void DidLoseContext() = 0;
  43   };
  44   explicit CommandBufferDriver(scoped_refptr<GpuState> gpu_state);
  45
  46   ~CommandBufferDriver();
  47
  48   void set_client(scoped_ptr<Client> client) { client_ = client.Pass(); }
  49
  50   void Initialize(mojo::CommandBufferSyncClientPtr sync_client,
  51                   mojo::CommandBufferLostContextObserverPtr loss_observer,
  52                   mojo::ScopedSharedBufferHandle shared_state,
  53                   mojo::Array<int32_t> attribs);
  54   void SetGetBuffer(int32_t buffer);
  55   void Flush(int32_t put_offset);
  56   void MakeProgress(int32_t last_get_offset);
  57   void RegisterTransferBuffer(int32_t id,
  58                               mojo::ScopedSharedBufferHandle transfer_buffer,
  59                               uint32_t size);
  60   void DestroyTransferBuffer(int32_t id);
  61   void Echo(const mojo::Callback<void()>& callback);
  62   void CreateImage(int32_t id,
  63                    mojo::ScopedHandle memory_handle,
  64                    int32_t type,
  65                    mojo::SizePtr size,
  66                    int32_t format,
  67                    int32_t internal_format);
  68   void DestroyImage(int32_t id);
  69
  70  private:
  71   bool MakeCurrent();
  72   bool DoInitialize(mojo::ScopedSharedBufferHandle shared_state,
  73                     mojo::Array<int32_t> attribs);
  74   void OnResize(gfx::Size size, float scale_factor);
  75   bool OnWaitSyncPoint(uint32_t sync_point);
  76   void OnSyncPointRetired();
  77   void OnParseError();
  78   void OnContextLost(uint32_t reason);
  79   void DestroyDecoder();
  80
  81   scoped_ptr<Client> client_;
  82   mojo::CommandBufferSyncClientPtr sync_client_;
  83   mojo::CommandBufferLostContextObserverPtr loss_observer_;
  84   scoped_ptr<gpu::CommandBufferService> command_buffer_;
  85   scoped_ptr<gpu::gles2::GLES2Decoder> decoder_;
  86   scoped_ptr<gpu::GpuScheduler> scheduler_;
  87   scoped_refptr<gfx::GLContext> context_;
  88   scoped_refptr<gfx::GLSurface> surface_;
  89   scoped_refptr<GpuState> gpu_state_;
  90
  91   scoped_refptr<base::SingleThreadTaskRunner> context_lost_task_runner_;
  92   base::Callback<void(int32_t)> context_lost_callback_;
  93
  94   base::WeakPtrFactory<CommandBufferDriver> weak_factory_;
  95
  96   DISALLOW_COPY_AND_ASSIGN(CommandBufferDriver);
  97 };
  98
  99 }  // namespace mus
 100
 101 #endif  // COMPONENTS_GLES2_COMMAND_BUFFER_DRIVER_H_