Provide shared context to Platform API in renderer.

content/renderer/renderer_webkitplatformsupport_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/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram.h"
 #include "base/platform_file.h"
 #include "base/shared_memory.h"
 #include "base/utf_string_conversions.h"
+#include "cc/context_provider.h"
 #include "content/common/database_util.h"
 #include "content/common/file_utilities_messages.h"
 #include "content/common/fileapi/webblobregistry_impl.h"
 #include "content/common/fileapi/webfilesystem_impl.h"
+#include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/common/indexed_db/proxy_webidbfactory_impl.h"
 #include "content/common/mime_registry_messages.h"
 #include "content/common/npobject_util.h"
 #include "content/common/view_messages.h"
 #include "content/common/webmessageportchannel_impl.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/gpu_info.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
 #include "content/renderer/gamepad_shared_memory_reader.h"
@@ skipping 15 matching lines @@
 #include "third_party/WebKit/Source/Platform/chromium/public/WebMediaStreamCenterClient.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebURL.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebVector.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRuntimeFeatures.h"
 #include "webkit/base/file_path_string_conversions.h"
 #include "webkit/glue/simple_webmimeregistry_impl.h"
 #include "webkit/glue/webclipboard_impl.h"
 #include "webkit/glue/webfileutilities_impl.h"
 #include "webkit/glue/webkit_glue.h"
+#include "webkit/gpu/webgraphicscontext3d_in_process_impl.h"
 
 #if defined(OS_WIN)
 #include "content/common/child_process_messages.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/win/WebSandboxSupport.h"
 #endif
 
 #if defined(OS_MACOSX)
 #include "content/common/mac/font_descriptor.h"
 #include "content/common/mac/font_loader.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/mac/WebSandboxSupport.h"
@@ skipping 760 matching lines @@
   g_sandbox_enabled = enable;
   return was_enabled;
 }
 
 // static
 void RendererWebKitPlatformSupportImpl::SetMockGamepadsForTesting(
     const WebGamepads& pads) {
   g_test_gamepads.Get() = pads;
 }
 
-GpuChannelHostFactory*
-RendererWebKitPlatformSupportImpl::GetGpuChannelHostFactory() {
-  return RenderThreadImpl::current();
-}
-
 //------------------------------------------------------------------------------
 
 WebKit::WebHyphenator* RendererWebKitPlatformSupportImpl::hyphenator() {
   WebKit::WebHyphenator* hyphenator =
       GetContentClient()->renderer()->OverrideWebHyphenator();
   if (hyphenator)
     return hyphenator;
   return hyphenator_.get();
 }
 
 //------------------------------------------------------------------------------
 
 bool RendererWebKitPlatformSupportImpl::processMemorySizesInBytes(
     size_t* private_bytes, size_t* shared_bytes) {
   content::RenderThread::Get()->Send(
       new ViewHostMsg_GetProcessMemorySizes(private_bytes, shared_bytes));
   return true;
 }
 
+//------------------------------------------------------------------------------
+
+WebKit::WebGraphicsContext3D*
+RendererWebKitPlatformSupportImpl::createOffscreenGraphicsContext3D(
+    const WebKit::WebGraphicsContext3D::Attributes& attributes) {
+  // The WebGraphicsContext3DInProcessImpl code path is used for
+  // layout tests (though not through this code) as well as for
+  // debugging and bringing up new ports.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kInProcessWebGL)) {
+    return webkit::gpu::WebGraphicsContext3DInProcessImpl::CreateForWebView(
+        attributes, false);
+  } else {
+    return WebGraphicsContext3DCommandBufferImpl::CreateOffscreenContext(
+        RenderThreadImpl::current(),
+        attributes,
+        GURL(attributes.topDocumentURL));
+  }
+}
+
+//------------------------------------------------------------------------------
+
+WebKit::WebGraphicsContext3D* RendererWebKitPlatformSupportImpl::
+    sharedOffscreenGraphicsContext3D() {
+  if (!shared_offscreen_context_ ||
+      shared_offscreen_context_->DestroyedOnMainThread()) {
+    shared_offscreen_context_ =
+        RenderThreadImpl::current()->OffscreenContextProviderForMainThread();
+  }
+  if (!shared_offscreen_context_->InitializeOnMainThread())
+    return NULL;
+  if (!shared_offscreen_context_->BindToCurrentThread())
+    return NULL;
+  return shared_offscreen_context_->Context3d();
+}
+
+//------------------------------------------------------------------------------
+
+GrContext* RendererWebKitPlatformSupportImpl::sharedOffscreenGrContext() {
+  if (!shared_offscreen_context_)
+    return NULL;
+  return shared_offscreen_context_->GrContext();
+}
+
+
 }  // namespace content