src/content/common/gpu/client/context_provider_command_buffer.h

   1 // Copyright (c) 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 CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
   6 #define CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/synchronization/lock.h"
  11 #include "base/threading/thread_checker.h"
  12 #include "cc/output/context_provider.h"
  13 #include "content/common/content_export.h"
  14 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
  15 #include "webkit/common/gpu/context_provider_web_context.h"
  16
  17 namespace webkit {
  18 namespace gpu {
  19 class GrContextForWebGraphicsContext3D;
  20 }
  21 }
  22
  23 namespace content {
  24
  25 // Implementation of cc::ContextProvider that provides a
  26 // WebGraphicsContext3DCommandBufferImpl context and a GrContext.
  27 class CONTENT_EXPORT ContextProviderCommandBuffer
  28     : NON_EXPORTED_BASE(public webkit::gpu::ContextProviderWebContext) {
  29  public:
  30   static scoped_refptr<ContextProviderCommandBuffer> Create(
  31       scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
  32       const std::string& debug_name);
  33
  34   CommandBufferProxyImpl* GetCommandBufferProxy();
  35
  36   void set_leak_on_destroy() {
  37     base::AutoLock lock(main_thread_lock_);
  38     leak_on_destroy_ = true;
  39   }
  40
  41   // ContextProviderWebContext implementation.
  42   virtual WebGraphicsContext3DCommandBufferImpl* WebContext3D() OVERRIDE;
  43
  44   // cc::ContextProvider implementation.
  45   virtual bool BindToCurrentThread() OVERRIDE;
  46   virtual gpu::gles2::GLES2Interface* ContextGL() OVERRIDE;
  47   virtual gpu::ContextSupport* ContextSupport() OVERRIDE;
  48   virtual class GrContext* GrContext() OVERRIDE;
  49   virtual Capabilities ContextCapabilities() OVERRIDE;
  50   virtual bool IsContextLost() OVERRIDE;
  51   virtual void VerifyContexts() OVERRIDE;
  52   virtual bool DestroyedOnMainThread() OVERRIDE;
  53   virtual void SetLostContextCallback(
  54       const LostContextCallback& lost_context_callback) OVERRIDE;
  55   virtual void SetMemoryPolicyChangedCallback(
  56       const MemoryPolicyChangedCallback& memory_policy_changed_callback)
  57       OVERRIDE;
  58
  59  protected:
  60   ContextProviderCommandBuffer(
  61       scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
  62       const std::string& debug_name);
  63   virtual ~ContextProviderCommandBuffer();
  64
  65   void OnLostContext();
  66   void OnMemoryAllocationChanged(const gpu::MemoryAllocation& allocation);
  67
  68  private:
  69   void InitializeCapabilities();
  70
  71   base::ThreadChecker main_thread_checker_;
  72   base::ThreadChecker context_thread_checker_;
  73
  74   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d_;
  75   scoped_ptr<webkit::gpu::GrContextForWebGraphicsContext3D> gr_context_;
  76
  77   cc::ContextProvider::Capabilities capabilities_;
  78   std::string debug_name_;
  79
  80   LostContextCallback lost_context_callback_;
  81   MemoryPolicyChangedCallback memory_policy_changed_callback_;
  82
  83   base::Lock main_thread_lock_;
  84   bool leak_on_destroy_;
  85   bool destroyed_;
  86
  87   class LostContextCallbackProxy;
  88   scoped_ptr<LostContextCallbackProxy> lost_context_callback_proxy_;
  89 };
  90
  91 }  // namespace content
  92
  93 #endif  // CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER