Merge 131225 - Disable image transport surface on AMD's dynamic switchable graphics.

content/gpu/gpu_info_collector_win.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/gpu/gpu_info_collector.h"
 
 #include <windows.h>
 #include <d3d9.h>
 #include <setupapi.h>
 #include <winsatcominterfacei.h>
@@ skipping 270 matching lines @@
           driver_version = WideToASCII(std::wstring(value));
 
         std::string driver_date;
         dwcb_data = sizeof(value);
         result = RegQueryValueExW(
             key, L"DriverDate", NULL, NULL,
             reinterpret_cast<LPBYTE>(value), &dwcb_data);
         if (result == ERROR_SUCCESS)
           driver_date = WideToASCII(std::wstring(value));
 
+        std::string driver_vendor;
+        dwcb_data = sizeof(value);
+        result = RegQueryValueExW(
+            key, L"ProviderName", NULL, NULL,
+            reinterpret_cast<LPBYTE>(value), &dwcb_data);
+        if (result == ERROR_SUCCESS) {
+          driver_vendor = WideToASCII(std::wstring(value));
+          // If it's an Intel GPU with a driver provided by AMD then it's
+          // probably AMD's Dynamic Switchable Graphics.
+          // TODO: detect only AMD switchable
+          gpu_info->amd_switchable =
+              driver_vendor == "Advanced Micro Devices, Inc." ||
+              driver_vendor == "ATI Technologies Inc.";
+        }
+
+        gpu_info->driver_vendor = driver_vendor;
         gpu_info->driver_version = driver_version;
         gpu_info->driver_date = driver_date;
         found = true;
         RegCloseKey(key);
         break;
       }
     }
   }
   SetupDiDestroyDeviceInfoList(device_info);
   return found;
 }
 
 bool CollectDriverInfoGL(content::GPUInfo* gpu_info) {
   DCHECK(gpu_info);
 
   std::string gl_version_string = gpu_info->gl_version_string;
 
   // TODO(zmo): We assume the driver version is in the end of GL_VERSION
   // string.  Need to verify if it is true for majority drivers.
 
   size_t pos = gl_version_string.find_last_not_of("0123456789.");
   if (pos != std::string::npos && pos < gl_version_string.length() - 1) {
     gpu_info->driver_version = gl_version_string.substr(pos + 1);
     return true;
   }
   return false;
 }
 
 }  // namespace gpu_info_collector