Provide shared context to Platform API in renderer.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 12 matching lines @@
 #include "base/string_number_conversions.h"  // Temporary
 #include "base/threading/thread_local.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "content/common/appcache/appcache_dispatcher.h"
 #include "content/common/child_histogram_message_filter.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/database_messages.h"
 #include "content/common/db_message_filter.h"
 #include "content/common/dom_storage_messages.h"
+#include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/indexed_db/indexed_db_dispatcher.h"
 #include "content/common/indexed_db/indexed_db_message_filter.h"
 #include "content/common/npobject_util.h"
 #include "content/common/plugin_messages.h"
 #include "content/common/resource_dispatcher.h"
 #include "content/common/resource_messages.h"
 #include "content/common/view_messages.h"
 #include "content/common/web_database_observer_impl.h"
@@ skipping 856 matching lines @@
     gpu_vda_context3d_.reset(
         WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
             this, WebKit::WebGraphicsContext3D::Attributes(),
             GURL("chrome://gpu/RenderThreadImpl::GetGpuVDAContext3D")));
     if (gpu_vda_context3d_.get())
       gpu_vda_context3d_->setContextLostCallback(context_lost_cb_.get());
   }
   return gpu_vda_context3d_.get();
 }
 
+scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
+RenderThreadImpl::CreateOffscreenContext3d() {
+  WebKit::WebGraphicsContext3D::Attributes attributes;
+  attributes.shareResources = true;
+  attributes.depth = false;
+  attributes.stencil = false;
+  attributes.antialias = false;
+  attributes.noAutomaticFlushes = true;
+
+  return make_scoped_ptr(
+      WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
+          this,
+          attributes,
+          GURL("chrome://gpu/RenderThreadImpl::CreateOffscreenContext3d")));
+}
+
+class RenderThreadImpl::RendererContextProviderCommandBuffer
+    : public content::ContextProviderCommandBuffer {
+ protected:
+  virtual ~RendererContextProviderCommandBuffer() {}
+
+  virtual scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
+  CreateOffscreenContext3d() {
+    RenderThreadImpl* self = RenderThreadImpl::current();
+    DCHECK(self);
+    return self->CreateOffscreenContext3d().Pass();
+  }
+};
+
+scoped_refptr<cc::ContextProvider>
+RenderThreadImpl::OffscreenContextProviderForMainThread() {
+  if (!shared_contexts_main_thread_ ||
+      shared_contexts_main_thread_->DestroyedOnMainThread())
+    shared_contexts_main_thread_ = new RendererContextProviderCommandBuffer;
+  return shared_contexts_main_thread_;
+}
+
+scoped_refptr<cc::ContextProvider>
+RenderThreadImpl::OffscreenContextProviderForCompositorThread() {
+  if (!shared_contexts_compositor_thread_ ||
+      shared_contexts_compositor_thread_->DestroyedOnMainThread()) {
+    shared_contexts_compositor_thread_ =
+        new RendererContextProviderCommandBuffer;
+  }
+  return shared_contexts_compositor_thread_;
+}
+
 AudioRendererMixerManager* RenderThreadImpl::GetAudioRendererMixerManager() {
   if (!audio_renderer_mixer_manager_.get()) {
     audio_renderer_mixer_manager_.reset(new AudioRendererMixerManager(
         GetAudioHardwareConfig()));
   }
 
   return audio_renderer_mixer_manager_.get();
 }
 
 media::AudioHardwareConfig* RenderThreadImpl::GetAudioHardwareConfig() {
@@ skipping 283 matching lines @@
 
 void RenderThreadImpl::SetFlingCurveParameters(
     const std::vector<float>& new_touchpad,
     const std::vector<float>& new_touchscreen) {
   webkit_platform_support_->SetFlingCurveParameters(new_touchpad,
                                                     new_touchscreen);
 
 }
 
 }  // namespace content