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   // ContextProviderWebContext implementation.
  37   WebGraphicsContext3DCommandBufferImpl* WebContext3D() override;
  38
  39   // cc::ContextProvider implementation.
  40   bool BindToCurrentThread() override;
  41   gpu::gles2::GLES2Interface* ContextGL() override;
  42   gpu::ContextSupport* ContextSupport() override;
  43   class GrContext* GrContext() override;
  44   Capabilities ContextCapabilities() override;
  45   bool IsContextLost() 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       const std::string& debug_name);
  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<webkit::gpu::GrContextForWebGraphicsContext3D> gr_context_;
  72
  73   cc::ContextProvider::Capabilities capabilities_;
  74   std::string debug_name_;
  75
  76   LostContextCallback lost_context_callback_;
  77   MemoryPolicyChangedCallback memory_policy_changed_callback_;
  78
  79   base::Lock main_thread_lock_;
  80   bool destroyed_;
  81
  82   class LostContextCallbackProxy;
  83   scoped_ptr<LostContextCallbackProxy> lost_context_callback_proxy_;
  84 };
  85
  86 }  // namespace content
  87
  88 #endif  // CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER