Ensure a compositing window is created if the image transport surface isn't used.

content/browser/gpu/gpu_data_manager_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/browser/gpu/gpu_data_manager_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/stringprintf.h"
 #include "base/sys_info.h"
 #include "base/values.h"
 #include "base/version.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/gpu/gpu_info_collector.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/gpu_data_manager_observer.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_switches.h"
 #include "webkit/plugins/plugin_switches.h"
 
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#endif
+
 using content::BrowserThread;
 using content::GpuDataManagerObserver;
 using content::GpuFeatureType;
 
 // static
 content::GpuDataManager* content::GpuDataManager::GetInstance() {
   return GpuDataManagerImpl::GetInstance();
 }
 
 // static
@@ skipping 198 matching lines @@
         base::StringPrintf("0x%04x", gpu_info_.gpu.vendor_id));
     command_line->AppendSwitchASCII(switches::kGpuDeviceID,
         base::StringPrintf("0x%04x", gpu_info_.gpu.device_id));
     command_line->AppendSwitchASCII(switches::kGpuDriverVendor,
         gpu_info_.driver_vendor);
     command_line->AppendSwitchASCII(switches::kGpuDriverVersion,
         gpu_info_.driver_version);
   }
 }
 
+#if defined(OS_WIN)
+bool GpuDataManagerImpl::IsUsingAcceleratedSurface() {
+  if (base::win::GetVersion() < base::win::VERSION_VISTA)
+    return false;
+
+  base::AutoLock auto_lock(gpu_info_lock_);
+  if (gpu_info_.amd_switchable)
+    return false;
+  if (software_rendering_)
+    return false;
+  uint32 flags = GetGpuFeatureType();
+  if (flags & content::GPU_FEATURE_TYPE_TEXTURE_SHARING)
+    return false;
+
+  return true;
+}
+#endif
+
 void GpuDataManagerImpl::AppendPluginCommandLine(
     CommandLine* command_line) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   DCHECK(command_line);
 
 #if defined(OS_MACOSX)
   uint32 flags = GetGpuFeatureType();
   // TODO(jbauman): Add proper blacklist support for core animation plugins so
   // special-casing this video card won't be necessary. See
   // http://crbug.com/134015
@@ skipping 68 matching lines @@
 
 void GpuDataManagerImpl::BlacklistCard() {
   card_blacklisted_ = true;
 
   gpu_feature_type_ = content::GPU_FEATURE_TYPE_ALL;
 
   EnableSoftwareRenderingIfNecessary();
   NotifyGpuInfoUpdate();
 }