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_H_
   6 #define CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER_H_
   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/blink/context_provider_web_context.h"
  13 #include "cc/output/context_provider.h"
  14 #include "content/common/content_export.h"
  15 #include "content/common/gpu/client/command_buffer_metrics.h"
  16 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
  17
  18 namespace content {
  19
  20 class GrContextForWebGraphicsContext3D;
  21
  22 // Implementation of cc::ContextProvider that provides a
  23 // WebGraphicsContext3DCommandBufferImpl context and a GrContext.
  24 class CONTENT_EXPORT ContextProviderCommandBuffer
  25     : NON_EXPORTED_BASE(public cc_blink::ContextProviderWebContext) {
  26  public:
  27   static scoped_refptr<ContextProviderCommandBuffer> Create(
  28       scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
  29       CommandBufferContextType type);
  30
  31   CommandBufferProxyImpl* GetCommandBufferProxy();
  32
  33   // cc_blink::ContextProviderWebContext implementation.
  34   WebGraphicsContext3DCommandBufferImpl* WebContext3D() override;
  35
  36   // cc::ContextProvider implementation.
  37   bool BindToCurrentThread() override;
  38   void DetachFromThread() override;
  39   gpu::gles2::GLES2Interface* ContextGL() override;
  40   gpu::ContextSupport* ContextSupport() override;
  41   class GrContext* GrContext() override;
  42   void InvalidateGrContext(uint32_t state) override;
  43   void SetupLock() override;
  44   base::Lock* GetLock() override;
  45   Capabilities ContextCapabilities() override;
  46   void VerifyContexts() override;
  47   void DeleteCachedResources() override;
  48   bool DestroyedOnMainThread() override;
  49   void SetLostContextCallback(
  50       const LostContextCallback& lost_context_callback) override;
  51   void SetMemoryPolicyChangedCallback(
  52       const MemoryPolicyChangedCallback& memory_policy_changed_callback)
  53       override;
  54
  55  protected:
  56   ContextProviderCommandBuffer(
  57       scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d,
  58       CommandBufferContextType type);
  59   ~ContextProviderCommandBuffer() override;
  60
  61   void OnLostContext();
  62   void OnMemoryAllocationChanged(const gpu::MemoryAllocation& allocation);
  63
  64  private:
  65   void InitializeCapabilities();
  66
  67   base::ThreadChecker main_thread_checker_;
  68   base::ThreadChecker context_thread_checker_;
  69
  70   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d_;
  71   scoped_ptr<GrContextForWebGraphicsContext3D> gr_context_;
  72
  73   cc::ContextProvider::Capabilities capabilities_;
  74   CommandBufferContextType context_type_;
  75   std::string debug_name_;
  76
  77   LostContextCallback lost_context_callback_;
  78   MemoryPolicyChangedCallback memory_policy_changed_callback_;
  79
  80   base::Lock main_thread_lock_;
  81   bool destroyed_;
  82
  83   base::Lock context_lock_;
  84
  85   class LostContextCallbackProxy;
  86   scoped_ptr<LostContextCallbackProxy> lost_context_callback_proxy_;
  87 };
  88
  89 }  // namespace content
  90
  91 #endif  // CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER_H_