src/gpu/config/gpu_info_collector_win.cc

   1 // Copyright (c) 2012 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 #include "gpu/config/gpu_info_collector.h"
   6
   7 // This has to be included before windows.h.
   8 #include "third_party/re2/re2/re2.h"
   9
  10 #include <windows.h>
  11 #include <d3d9.h>
  12 #include <d3d11.h>
  13 #include <dxgi.h>
  14 #include <setupapi.h>
  15
  16 #include "base/command_line.h"
  17 #include "base/debug/trace_event.h"
  18 #include "base/file_util.h"
  19 #include "base/files/file_enumerator.h"
  20 #include "base/files/file_path.h"
  21 #include "base/logging.h"
  22 #include "base/message_loop/message_loop.h"
  23 #include "base/metrics/field_trial.h"
  24 #include "base/metrics/histogram.h"
  25 #include "base/scoped_native_library.h"
  26 #include "base/strings/string16.h"
  27 #include "base/strings/string_number_conversions.h"
  28 #include "base/strings/string_util.h"
  29 #include "base/strings/stringprintf.h"
  30 #include "base/threading/thread.h"
  31 #include "base/threading/worker_pool.h"
  32 #include "base/win/registry.h"
  33 #include "base/win/scoped_com_initializer.h"
  34 #include "base/win/scoped_comptr.h"
  35 #include "base/win/windows_version.h"
  36 #include "third_party/libxml/chromium/libxml_utils.h"
  37 #include "ui/gl/gl_implementation.h"
  38 #include "ui/gl/gl_surface_egl.h"
  39
  40 namespace gpu {
  41
  42 namespace {
  43
  44 // This must be kept in sync with histograms.xml.
  45 enum DisplayLinkInstallationStatus {
  46   DISPLAY_LINK_NOT_INSTALLED,
  47   DISPLAY_LINK_7_1_OR_EARLIER,
  48   DISPLAY_LINK_7_2_OR_LATER,
  49   DISPLAY_LINK_INSTALLATION_STATUS_MAX
  50 };
  51
  52 float ReadXMLFloatValue(XmlReader* reader) {
  53   std::string score_string;
  54   if (!reader->ReadElementContent(&score_string))
  55     return 0.0;
  56
  57   double score;
  58   if (!base::StringToDouble(score_string, &score))
  59     return 0.0;
  60
  61   return static_cast<float>(score);
  62 }
  63
  64 GpuPerformanceStats RetrieveGpuPerformanceStats() {
  65   TRACE_EVENT0("gpu", "RetrieveGpuPerformanceStats");
  66
  67   // If the user re-runs the assessment without restarting, the COM API
  68   // returns WINSAT_ASSESSMENT_STATE_NOT_AVAILABLE. Because of that and
  69   // http://crbug.com/124325, read the assessment result files directly.
  70   GpuPerformanceStats stats;
  71
  72   // Get path to WinSAT results files.
  73   wchar_t winsat_results_path[MAX_PATH];
  74   DWORD size = ExpandEnvironmentStrings(
  75       L"%WinDir%\\Performance\\WinSAT\\DataStore\\",
  76       winsat_results_path, MAX_PATH);
  77   if (size == 0 || size > MAX_PATH) {
  78     LOG(ERROR) << "The path to the WinSAT results is too long: "
  79                << size << " chars.";
  80     return stats;
  81   }
  82
  83   // Find most recent formal assessment results.
  84   base::FileEnumerator file_enumerator(
  85       base::FilePath(winsat_results_path),
  86       false,  // not recursive
  87       base::FileEnumerator::FILES,
  88       FILE_PATH_LITERAL("* * Formal.Assessment (*).WinSAT.xml"));
  89
  90   base::FilePath current_results;
  91   for (base::FilePath results = file_enumerator.Next(); !results.empty();
  92        results = file_enumerator.Next()) {
  93     // The filenames start with the date and time as yyyy-mm-dd hh.mm.ss.xxx,
  94     // so the greatest file lexicographically is also the most recent file.
  95     if (base::FilePath::CompareLessIgnoreCase(current_results.value(),
  96                                               results.value()))
  97       current_results = results;
  98   }
  99
 100   std::string current_results_string = current_results.MaybeAsASCII();
 101   if (current_results_string.empty()) {
 102     LOG(ERROR) << "Can't retrieve a valid WinSAT assessment.";
 103     return stats;
 104   }
 105
 106   // Get relevant scores from results file. XML schema at:
 107   // http://msdn.microsoft.com/en-us/library/windows/desktop/aa969210.aspx
 108   XmlReader reader;
 109   if (!reader.LoadFile(current_results_string)) {
 110     LOG(ERROR) << "Could not open WinSAT results file.";
 111     return stats;
 112   }
 113   // Descend into <WinSAT> root element.
 114   if (!reader.SkipToElement() || !reader.Read()) {
 115     LOG(ERROR) << "Could not read WinSAT results file.";
 116     return stats;
 117   }
 118
 119   // Search for <WinSPR> element containing the results.
 120   do {
 121     if (reader.NodeName() == "WinSPR")
 122       break;
 123   } while (reader.Next());
 124   // Descend into <WinSPR> element.
 125   if (!reader.Read()) {
 126     LOG(ERROR) << "Could not find WinSPR element in results file.";
 127     return stats;
 128   }
 129
 130   // Read scores.
 131   for (int depth = reader.Depth(); reader.Depth() == depth; reader.Next()) {
 132     std::string node_name = reader.NodeName();
 133     if (node_name == "SystemScore")
 134       stats.overall = ReadXMLFloatValue(&reader);
 135     else if (node_name == "GraphicsScore")
 136       stats.graphics = ReadXMLFloatValue(&reader);
 137     else if (node_name == "GamingScore")
 138       stats.gaming = ReadXMLFloatValue(&reader);
 139   }
 140
 141   if (stats.overall == 0.0)
 142     LOG(ERROR) << "Could not read overall score from assessment results.";
 143   if (stats.graphics == 0.0)
 144     LOG(ERROR) << "Could not read graphics score from assessment results.";
 145   if (stats.gaming == 0.0)
 146     LOG(ERROR) << "Could not read gaming score from assessment results.";
 147
 148   return stats;
 149 }
 150
 151 GpuPerformanceStats RetrieveGpuPerformanceStatsWithHistograms() {
 152   base::TimeTicks start_time = base::TimeTicks::Now();
 153
 154   GpuPerformanceStats stats = RetrieveGpuPerformanceStats();
 155
 156   UMA_HISTOGRAM_TIMES("GPU.WinSAT.ReadResultsFileTime",
 157                       base::TimeTicks::Now() - start_time);
 158   UMA_HISTOGRAM_CUSTOM_COUNTS("GPU.WinSAT.OverallScore2",
 159                               stats.overall * 10, 10, 200, 50);
 160   UMA_HISTOGRAM_CUSTOM_COUNTS("GPU.WinSAT.GraphicsScore2",
 161                               stats.graphics * 10, 10, 200, 50);
 162   UMA_HISTOGRAM_CUSTOM_COUNTS("GPU.WinSAT.GamingScore2",
 163                               stats.gaming * 10, 10, 200, 50);
 164   UMA_HISTOGRAM_BOOLEAN(
 165       "GPU.WinSAT.HasResults",
 166       stats.overall != 0.0 && stats.graphics != 0.0 && stats.gaming != 0.0);
 167
 168   return stats;
 169 }
 170
 171 // Returns the display link driver version or an invalid version if it is
 172 // not installed.
 173 Version DisplayLinkVersion() {
 174   base::win::RegKey key;
 175
 176   if (key.Open(HKEY_LOCAL_MACHINE, L"SOFTWARE", KEY_READ | KEY_WOW64_64KEY))
 177     return Version();
 178
 179   if (key.OpenKey(L"DisplayLink", KEY_READ | KEY_WOW64_64KEY))
 180     return Version();
 181
 182   if (key.OpenKey(L"Core", KEY_READ | KEY_WOW64_64KEY))
 183     return Version();
 184
 185   string16 version;
 186   if (key.ReadValue(L"Version", &version))
 187     return Version();
 188
 189   return Version(WideToASCII(version));
 190 }
 191
 192 // Returns whether Lenovo dCute is installed.
 193 bool IsLenovoDCuteInstalled() {
 194   base::win::RegKey key;
 195
 196   if (key.Open(HKEY_LOCAL_MACHINE, L"SOFTWARE", KEY_READ | KEY_WOW64_64KEY))
 197     return false;
 198
 199   if (key.OpenKey(L"Lenovo", KEY_READ | KEY_WOW64_64KEY))
 200     return false;
 201
 202   if (key.OpenKey(L"Lenovo dCute", KEY_READ | KEY_WOW64_64KEY))
 203     return false;
 204
 205   return true;
 206 }
 207
 208 // Determines whether D3D11 won't work, either because it is not supported on
 209 // the machine or because it is known it is likely to crash.
 210 bool D3D11ShouldWork(const GPUInfo& gpu_info) {
 211   // TODO(apatrick): This is a temporary change to see what impact disabling
 212   // D3D11 stats collection has on Canary.
 213   return false;
 214
 215   // Windows XP never supports D3D11. It seems to be less stable that D3D9 on
 216   // Vista.
 217   if (base::win::GetVersion() <= base::win::VERSION_VISTA)
 218     return false;
 219
 220   // http://crbug.com/175525.
 221   if (gpu_info.display_link_version.IsValid())
 222     return false;
 223
 224   return true;
 225 }
 226
 227 // Collects information about the level of D3D11 support and records it in
 228 // the UMA stats. Records no stats when D3D11 in not supported at all.
 229 void CollectD3D11SupportOnWorkerThread() {
 230   TRACE_EVENT0("gpu", "CollectD3D11Support");
 231
 232   typedef HRESULT (WINAPI *D3D11CreateDeviceFunc)(
 233       IDXGIAdapter* adapter,
 234       D3D_DRIVER_TYPE driver_type,
 235       HMODULE software,
 236       UINT flags,
 237       const D3D_FEATURE_LEVEL* feature_levels,
 238       UINT num_feature_levels,
 239       UINT sdk_version,
 240       ID3D11Device** device,
 241       D3D_FEATURE_LEVEL* feature_level,
 242       ID3D11DeviceContext** immediate_context);
 243
 244   // This enumeration must be kept in sync with histograms.xml. Do not reorder
 245   // the members; always add to the end.
 246   enum FeatureLevel {
 247     FEATURE_LEVEL_UNKNOWN,
 248     FEATURE_LEVEL_NO_D3D11_DLL,
 249     FEATURE_LEVEL_NO_CREATE_DEVICE_ENTRY_POINT,
 250     FEATURE_LEVEL_DEVICE_CREATION_FAILED,
 251     FEATURE_LEVEL_9_1,
 252     FEATURE_LEVEL_9_2,
 253     FEATURE_LEVEL_9_3,
 254     FEATURE_LEVEL_10_0,
 255     FEATURE_LEVEL_10_1,
 256     FEATURE_LEVEL_11_0,
 257     NUM_FEATURE_LEVELS
 258   };
 259
 260   FeatureLevel feature_level = FEATURE_LEVEL_UNKNOWN;
 261   UINT bgra_support = 0;
 262
 263   // This module is leaked in case it is hooked by third party software.
 264   base::NativeLibrary d3d11_module = base::LoadNativeLibrary(
 265       base::FilePath(L"d3d11.dll"),
 266       NULL);
 267
 268   if (!d3d11_module) {
 269     feature_level = FEATURE_LEVEL_NO_D3D11_DLL;
 270   } else {
 271     D3D11CreateDeviceFunc create_func =
 272         reinterpret_cast<D3D11CreateDeviceFunc>(
 273             base::GetFunctionPointerFromNativeLibrary(d3d11_module,
 274                                                       "D3D11CreateDevice"));
 275     if (!create_func) {
 276       feature_level = FEATURE_LEVEL_NO_CREATE_DEVICE_ENTRY_POINT;
 277     } else {
 278       static const D3D_FEATURE_LEVEL d3d_feature_levels[] = {
 279         D3D_FEATURE_LEVEL_11_0,
 280         D3D_FEATURE_LEVEL_10_1,
 281         D3D_FEATURE_LEVEL_10_0,
 282         D3D_FEATURE_LEVEL_9_3,
 283         D3D_FEATURE_LEVEL_9_2,
 284         D3D_FEATURE_LEVEL_9_1
 285       };
 286
 287       base::win::ScopedComPtr<ID3D11Device> device;
 288       D3D_FEATURE_LEVEL d3d_feature_level;
 289       base::win::ScopedComPtr<ID3D11DeviceContext> device_context;
 290       HRESULT hr = create_func(NULL,
 291                                D3D_DRIVER_TYPE_HARDWARE,
 292                                NULL,
 293                                0,
 294                                d3d_feature_levels,
 295                                arraysize(d3d_feature_levels),
 296                                D3D11_SDK_VERSION,
 297                                device.Receive(),
 298                                &d3d_feature_level,
 299                                device_context.Receive());
 300       if (FAILED(hr)) {
 301         feature_level = FEATURE_LEVEL_DEVICE_CREATION_FAILED;
 302       } else {
 303         switch (d3d_feature_level) {
 304           case D3D_FEATURE_LEVEL_11_0:
 305             feature_level = FEATURE_LEVEL_11_0;
 306             break;
 307           case D3D_FEATURE_LEVEL_10_1:
 308             feature_level = FEATURE_LEVEL_10_1;
 309             break;
 310           case D3D_FEATURE_LEVEL_10_0:
 311             feature_level = FEATURE_LEVEL_10_0;
 312             break;
 313           case D3D_FEATURE_LEVEL_9_3:
 314             feature_level = FEATURE_LEVEL_9_3;
 315             break;
 316           case D3D_FEATURE_LEVEL_9_2:
 317             feature_level = FEATURE_LEVEL_9_2;
 318             break;
 319           case D3D_FEATURE_LEVEL_9_1:
 320             feature_level = FEATURE_LEVEL_9_1;
 321             break;
 322           default:
 323             NOTREACHED();
 324             break;
 325         }
 326
 327         hr = device->CheckFormatSupport(DXGI_FORMAT_B8G8R8A8_UNORM,
 328                                         &bgra_support);
 329         DCHECK(SUCCEEDED(hr));
 330       }
 331     }
 332   }
 333
 334   UMA_HISTOGRAM_ENUMERATION("GPU.D3D11_FeatureLevel",
 335                             feature_level,
 336                             NUM_FEATURE_LEVELS);
 337
 338   // ANGLE requires at least feature level 10.0. Do not record any further
 339   // stats if ANGLE would not work anyway.
 340   if (feature_level < FEATURE_LEVEL_10_0)
 341     return;
 342
 343   UMA_HISTOGRAM_BOOLEAN(
 344       "GPU.D3D11_B8G8R8A8_Texture2DSupport",
 345       (bgra_support & D3D11_FORMAT_SUPPORT_TEXTURE2D) != 0);
 346   UMA_HISTOGRAM_BOOLEAN(
 347       "GPU.D3D11_B8G8R8A8_RenderTargetSupport",
 348       (bgra_support & D3D11_FORMAT_SUPPORT_RENDER_TARGET) != 0);
 349 }
 350
 351 // Collects information about the level of D3D11 support and records it in
 352 // the UMA stats. Records no stats when D3D11 in not supported at all.
 353 void CollectD3D11Support() {
 354   // D3D11 takes about 50ms to initialize so do this on a worker thread.
 355   base::WorkerPool::PostTask(
 356       FROM_HERE,
 357       base::Bind(CollectD3D11SupportOnWorkerThread),
 358       false);
 359 }
 360 }  // namespace anonymous
 361
 362 #if !defined(GOOGLE_CHROME_BUILD)
 363 AMDVideoCardType GetAMDVideocardType() {
 364   return STANDALONE;
 365 }
 366 #else
 367 // This function has a real implementation for official builds that can
 368 // be found in src/third_party/amd.
 369 AMDVideoCardType GetAMDVideocardType();
 370 #endif
 371
 372 bool CollectDriverInfoD3D(const std::wstring& device_id,
 373                           GPUInfo* gpu_info) {
 374   TRACE_EVENT0("gpu", "CollectDriverInfoD3D");
 375
 376   // create device info for the display device
 377   HDEVINFO device_info = SetupDiGetClassDevsW(
 378       NULL, device_id.c_str(), NULL,
 379       DIGCF_PRESENT | DIGCF_PROFILE | DIGCF_ALLCLASSES);
 380   if (device_info == INVALID_HANDLE_VALUE) {
 381     LOG(ERROR) << "Creating device info failed";
 382     return false;
 383   }
 384
 385   DWORD index = 0;
 386   bool found = false;
 387   SP_DEVINFO_DATA device_info_data;
 388   device_info_data.cbSize = sizeof(device_info_data);
 389   while (SetupDiEnumDeviceInfo(device_info, index++, &device_info_data)) {
 390     WCHAR value[255];
 391     if (SetupDiGetDeviceRegistryPropertyW(device_info,
 392                                         &device_info_data,
 393                                         SPDRP_DRIVER,
 394                                         NULL,
 395                                         reinterpret_cast<PBYTE>(value),
 396                                         sizeof(value),
 397                                         NULL)) {
 398       HKEY key;
 399       std::wstring driver_key = L"System\\CurrentControlSet\\Control\\Class\\";
 400       driver_key += value;
 401       LONG result = RegOpenKeyExW(
 402           HKEY_LOCAL_MACHINE, driver_key.c_str(), 0, KEY_QUERY_VALUE, &key);
 403       if (result == ERROR_SUCCESS) {
 404         DWORD dwcb_data = sizeof(value);
 405         std::string driver_version;
 406         result = RegQueryValueExW(
 407             key, L"DriverVersion", NULL, NULL,
 408             reinterpret_cast<LPBYTE>(value), &dwcb_data);
 409         if (result == ERROR_SUCCESS)
 410           driver_version = WideToASCII(std::wstring(value));
 411
 412         std::string driver_date;
 413         dwcb_data = sizeof(value);
 414         result = RegQueryValueExW(
 415             key, L"DriverDate", NULL, NULL,
 416             reinterpret_cast<LPBYTE>(value), &dwcb_data);
 417         if (result == ERROR_SUCCESS)
 418           driver_date = WideToASCII(std::wstring(value));
 419
 420         std::string driver_vendor;
 421         dwcb_data = sizeof(value);
 422         result = RegQueryValueExW(
 423             key, L"ProviderName", NULL, NULL,
 424             reinterpret_cast<LPBYTE>(value), &dwcb_data);
 425         if (result == ERROR_SUCCESS) {
 426           driver_vendor = WideToASCII(std::wstring(value));
 427           if (driver_vendor == "Advanced Micro Devices, Inc." ||
 428               driver_vendor == "ATI Technologies Inc.") {
 429             // We are conservative and assume that in the absence of a clear
 430             // signal the videocard is assumed to be switchable. Additionally,
 431             // some switchable systems with Intel GPUs aren't correctly
 432             // detected, so always count them.
 433             AMDVideoCardType amd_card_type = GetAMDVideocardType();
 434             gpu_info->amd_switchable = (gpu_info->gpu.vendor_id == 0x8086) ||
 435                                        (amd_card_type != STANDALONE);
 436           }
 437         }
 438
 439         gpu_info->driver_vendor = driver_vendor;
 440         gpu_info->driver_version = driver_version;
 441         gpu_info->driver_date = driver_date;
 442         found = true;
 443         RegCloseKey(key);
 444         break;
 445       }
 446     }
 447   }
 448   SetupDiDestroyDeviceInfoList(device_info);
 449   return found;
 450 }
 451
 452 bool CollectContextGraphicsInfo(GPUInfo* gpu_info) {
 453   TRACE_EVENT0("gpu", "CollectGraphicsInfo");
 454
 455   DCHECK(gpu_info);
 456
 457   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseGL)) {
 458     std::string requested_implementation_name =
 459         CommandLine::ForCurrentProcess()->GetSwitchValueASCII(switches::kUseGL);
 460     if (requested_implementation_name == "swiftshader") {
 461       gpu_info->software_rendering = true;
 462       return false;
 463     }
 464   }
 465
 466   if (!CollectGraphicsInfoGL(gpu_info))
 467     return false;
 468
 469   // ANGLE's renderer strings are of the form:
 470   // ANGLE (<adapter_identifier> Direct3D<version> vs_x_x ps_x_x)
 471   std::string direct3d_version;
 472   int vertex_shader_major_version = 0;
 473   int vertex_shader_minor_version = 0;
 474   int pixel_shader_major_version = 0;
 475   int pixel_shader_minor_version = 0;
 476   gpu_info->adapter_luid = 0;
 477   if (RE2::FullMatch(gpu_info->gl_renderer,
 478                      "ANGLE \\(.*\\)") &&
 479       RE2::PartialMatch(gpu_info->gl_renderer,
 480                         " Direct3D(\\w+)",
 481                         &direct3d_version) &&
 482       RE2::PartialMatch(gpu_info->gl_renderer,
 483                         " vs_(\\d+)_(\\d+)",
 484                         &vertex_shader_major_version,
 485                         &vertex_shader_minor_version) &&
 486       RE2::PartialMatch(gpu_info->gl_renderer,
 487                         " ps_(\\d+)_(\\d+)",
 488                         &pixel_shader_major_version,
 489                         &pixel_shader_minor_version)) {
 490     gpu_info->can_lose_context = direct3d_version == "9";
 491     gpu_info->vertex_shader_version =
 492         base::StringPrintf("%d.%d",
 493                            vertex_shader_major_version,
 494                            vertex_shader_minor_version);
 495     gpu_info->pixel_shader_version =
 496         base::StringPrintf("%d.%d",
 497                            pixel_shader_major_version,
 498                            pixel_shader_minor_version);
 499
 500     // ANGLE's EGL vendor strings are of the form:
 501     // Google, Inc. (adapter LUID: 0123456789ABCDEF)
 502     // The LUID is optional and identifies the GPU adapter ANGLE is using.
 503     const char* egl_vendor = eglQueryString(
 504         gfx::GLSurfaceEGL::GetHardwareDisplay(),
 505         EGL_VENDOR);
 506     RE2::PartialMatch(egl_vendor,
 507                       " \\(adapter LUID: ([0-9A-Fa-f]{16})\\)",
 508                       RE2::Hex(&gpu_info->adapter_luid));
 509
 510     // DirectX diagnostics are collected asynchronously because it takes a
 511     // couple of seconds. Do not mark gpu_info as complete until that is done.
 512     gpu_info->finalized = false;
 513   } else {
 514     gpu_info->finalized = true;
 515   }
 516
 517   return true;
 518 }
 519
 520 GpuIDResult CollectGpuID(uint32* vendor_id, uint32* device_id) {
 521   DCHECK(vendor_id && device_id);
 522   *vendor_id = 0;
 523   *device_id = 0;
 524
 525   // Taken from http://developer.nvidia.com/object/device_ids.html
 526   DISPLAY_DEVICE dd;
 527   dd.cb = sizeof(DISPLAY_DEVICE);
 528   std::wstring id;
 529   for (int i = 0; EnumDisplayDevices(NULL, i, &dd, 0); ++i) {
 530     if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
 531       id = dd.DeviceID;
 532       break;
 533     }
 534   }
 535
 536   if (id.length() > 20) {
 537     int vendor = 0, device = 0;
 538     std::wstring vendor_string = id.substr(8, 4);
 539     std::wstring device_string = id.substr(17, 4);
 540     base::HexStringToInt(WideToASCII(vendor_string), &vendor);
 541     base::HexStringToInt(WideToASCII(device_string), &device);
 542     *vendor_id = vendor;
 543     *device_id = device;
 544     return kGpuIDSuccess;
 545   }
 546   return kGpuIDFailure;
 547 }
 548
 549 bool CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
 550   TRACE_EVENT0("gpu", "CollectPreliminaryGraphicsInfo");
 551
 552   DCHECK(gpu_info);
 553
 554   gpu_info->performance_stats = RetrieveGpuPerformanceStatsWithHistograms();
 555
 556   // nvd3d9wrap.dll is loaded into all processes when Optimus is enabled.
 557   HMODULE nvd3d9wrap = GetModuleHandleW(L"nvd3d9wrap.dll");
 558   gpu_info->optimus = nvd3d9wrap != NULL;
 559
 560   gpu_info->lenovo_dcute = IsLenovoDCuteInstalled();
 561
 562   gpu_info->display_link_version = DisplayLinkVersion();
 563
 564   if (!gpu_info->display_link_version .IsValid()) {
 565     UMA_HISTOGRAM_ENUMERATION("GPU.DisplayLinkInstallationStatus",
 566                               DISPLAY_LINK_NOT_INSTALLED,
 567                               DISPLAY_LINK_INSTALLATION_STATUS_MAX);
 568   } else if (gpu_info->display_link_version.IsOlderThan("7.2")) {
 569     UMA_HISTOGRAM_ENUMERATION("GPU.DisplayLinkInstallationStatus",
 570                               DISPLAY_LINK_7_1_OR_EARLIER,
 571                               DISPLAY_LINK_INSTALLATION_STATUS_MAX);
 572   } else {
 573     UMA_HISTOGRAM_ENUMERATION("GPU.DisplayLinkInstallationStatus",
 574                               DISPLAY_LINK_7_2_OR_LATER,
 575                               DISPLAY_LINK_INSTALLATION_STATUS_MAX);
 576   }
 577
 578   // Taken from http://developer.nvidia.com/object/device_ids.html
 579   DISPLAY_DEVICE dd;
 580   dd.cb = sizeof(DISPLAY_DEVICE);
 581   std::wstring id;
 582   for (int i = 0; EnumDisplayDevices(NULL, i, &dd, 0); ++i) {
 583     if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
 584       id = dd.DeviceID;
 585       break;
 586     }
 587   }
 588
 589   if (id.length() <= 20)
 590     return false;
 591
 592   int vendor_id = 0, device_id = 0;
 593   string16 vendor_id_string = id.substr(8, 4);
 594   string16 device_id_string = id.substr(17, 4);
 595   base::HexStringToInt(WideToASCII(vendor_id_string), &vendor_id);
 596   base::HexStringToInt(WideToASCII(device_id_string), &device_id);
 597   gpu_info->gpu.vendor_id = vendor_id;
 598   gpu_info->gpu.device_id = device_id;
 599   // TODO(zmo): we only need to call CollectDriverInfoD3D() if we use ANGLE.
 600   if (!CollectDriverInfoD3D(id, gpu_info))
 601     return false;
 602
 603   // Collect basic information about supported D3D11 features. Delay for 45
 604   // seconds so as not to regress performance tests.
 605   if (D3D11ShouldWork(*gpu_info)) {
 606     // This is on a field trial so we can turn it off easily if it blows up
 607     // again in stable channel.
 608     scoped_refptr<base::FieldTrial> trial(
 609         base::FieldTrialList::FactoryGetFieldTrial(
 610             "D3D11Experiment", 100, "Disabled", 2015, 7, 8,
 611             base::FieldTrial::SESSION_RANDOMIZED, NULL));
 612     const int enabled_group =
 613         trial->AppendGroup("Enabled", 0);
 614
 615     if (trial->group() == enabled_group) {
 616       base::MessageLoop::current()->PostDelayedTask(
 617           FROM_HERE,
 618           base::Bind(&CollectD3D11Support),
 619           base::TimeDelta::FromSeconds(45));
 620     }
 621   }
 622
 623   return true;
 624 }
 625
 626 bool CollectDriverInfoGL(GPUInfo* gpu_info) {
 627   TRACE_EVENT0("gpu", "CollectDriverInfoGL");
 628
 629   if (!gpu_info->driver_version.empty())
 630     return true;
 631
 632   std::string gl_version_string = gpu_info->gl_version_string;
 633
 634   return RE2::PartialMatch(gl_version_string,
 635                            "([\\d\\.]+)$",
 636                            &gpu_info->driver_version);
 637 }
 638
 639 void MergeGPUInfo(GPUInfo* basic_gpu_info,
 640                   const GPUInfo& context_gpu_info) {
 641   DCHECK(basic_gpu_info);
 642
 643   if (context_gpu_info.software_rendering) {
 644     basic_gpu_info->software_rendering = true;
 645     return;
 646   }
 647
 648   MergeGPUInfoGL(basic_gpu_info, context_gpu_info);
 649
 650   basic_gpu_info->dx_diagnostics = context_gpu_info.dx_diagnostics;
 651 }
 652
 653 }  // namespace gpu