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/strings/utf_string_conversions.h"
  31 #include "base/threading/thread.h"
  32 #include "base/threading/worker_pool.h"
  33 #include "base/win/registry.h"
  34 #include "base/win/scoped_com_initializer.h"
  35 #include "base/win/scoped_comptr.h"
  36 #include "base/win/windows_version.h"
  37 #include "third_party/libxml/chromium/libxml_utils.h"
  38 #include "ui/gl/gl_implementation.h"
  39 #include "ui/gl/gl_surface_egl.h"
  40
  41 namespace gpu {
  42
  43 namespace {
  44
  45 // This must be kept in sync with histograms.xml.
  46 enum DisplayLinkInstallationStatus {
  47   DISPLAY_LINK_NOT_INSTALLED,
  48   DISPLAY_LINK_7_1_OR_EARLIER,
  49   DISPLAY_LINK_7_2_OR_LATER,
  50   DISPLAY_LINK_INSTALLATION_STATUS_MAX
  51 };
  52
  53 float ReadXMLFloatValue(XmlReader* reader) {
  54   std::string score_string;
  55   if (!reader->ReadElementContent(&score_string))
  56     return 0.0;
  57
  58   double score;
  59   if (!base::StringToDouble(score_string, &score))
  60     return 0.0;
  61
  62   return static_cast<float>(score);
  63 }
  64
  65 GpuPerformanceStats RetrieveGpuPerformanceStats() {
  66   TRACE_EVENT0("gpu", "RetrieveGpuPerformanceStats");
  67
  68   // If the user re-runs the assessment without restarting, the COM API
  69   // returns WINSAT_ASSESSMENT_STATE_NOT_AVAILABLE. Because of that and
  70   // http://crbug.com/124325, read the assessment result files directly.
  71   GpuPerformanceStats stats;
  72
  73   // Get path to WinSAT results files.
  74   wchar_t winsat_results_path[MAX_PATH];
  75   DWORD size = ExpandEnvironmentStrings(
  76       L"%WinDir%\\Performance\\WinSAT\\DataStore\\",
  77       winsat_results_path, MAX_PATH);
  78   if (size == 0 || size > MAX_PATH) {
  79     LOG(ERROR) << "The path to the WinSAT results is too long: "
  80                << size << " chars.";
  81     return stats;
  82   }
  83
  84   // Find most recent formal assessment results.
  85   base::FileEnumerator file_enumerator(
  86       base::FilePath(winsat_results_path),
  87       false,  // not recursive
  88       base::FileEnumerator::FILES,
  89       FILE_PATH_LITERAL("* * Formal.Assessment (*).WinSAT.xml"));
  90
  91   base::FilePath current_results;
  92   for (base::FilePath results = file_enumerator.Next(); !results.empty();
  93        results = file_enumerator.Next()) {
  94     // The filenames start with the date and time as yyyy-mm-dd hh.mm.ss.xxx,
  95     // so the greatest file lexicographically is also the most recent file.
  96     if (base::FilePath::CompareLessIgnoreCase(current_results.value(),
  97                                               results.value()))
  98       current_results = results;
  99   }
 100
 101   std::string current_results_string = current_results.MaybeAsASCII();
 102   if (current_results_string.empty())
 103     return stats;
 104
 105   // Get relevant scores from results file. XML schema at:
 106   // http://msdn.microsoft.com/en-us/library/windows/desktop/aa969210.aspx
 107   XmlReader reader;
 108   if (!reader.LoadFile(current_results_string)) {
 109     LOG(ERROR) << "Could not open WinSAT results file.";
 110     return stats;
 111   }
 112   // Descend into <WinSAT> root element.
 113   if (!reader.SkipToElement() || !reader.Read()) {
 114     LOG(ERROR) << "Could not read WinSAT results file.";
 115     return stats;
 116   }
 117
 118   // Search for <WinSPR> element containing the results.
 119   do {
 120     if (reader.NodeName() == "WinSPR")
 121       break;
 122   } while (reader.Next());
 123   // Descend into <WinSPR> element.
 124   if (!reader.Read()) {
 125     LOG(ERROR) << "Could not find WinSPR element in results file.";
 126     return stats;
 127   }
 128
 129   // Read scores.
 130   for (int depth = reader.Depth(); reader.Depth() == depth; reader.Next()) {
 131     std::string node_name = reader.NodeName();
 132     if (node_name == "SystemScore")
 133       stats.overall = ReadXMLFloatValue(&reader);
 134     else if (node_name == "GraphicsScore")
 135       stats.graphics = ReadXMLFloatValue(&reader);
 136     else if (node_name == "GamingScore")
 137       stats.gaming = ReadXMLFloatValue(&reader);
 138   }
 139
 140   if (stats.overall == 0.0)
 141     LOG(ERROR) << "Could not read overall score from assessment results.";
 142   if (stats.graphics == 0.0)
 143     LOG(ERROR) << "Could not read graphics score from assessment results.";
 144   if (stats.gaming == 0.0)
 145     LOG(ERROR) << "Could not read gaming score from assessment results.";
 146
 147   return stats;
 148 }
 149
 150 GpuPerformanceStats RetrieveGpuPerformanceStatsWithHistograms() {
 151   base::TimeTicks start_time = base::TimeTicks::Now();
 152
 153   GpuPerformanceStats stats = RetrieveGpuPerformanceStats();
 154
 155   UMA_HISTOGRAM_TIMES("GPU.WinSAT.ReadResultsFileTime",
 156                       base::TimeTicks::Now() - start_time);
 157   UMA_HISTOGRAM_CUSTOM_COUNTS("GPU.WinSAT.OverallScore2",
 158                               stats.overall * 10, 10, 200, 50);
 159   UMA_HISTOGRAM_CUSTOM_COUNTS("GPU.WinSAT.GraphicsScore2",
 160                               stats.graphics * 10, 10, 200, 50);
 161   UMA_HISTOGRAM_CUSTOM_COUNTS("GPU.WinSAT.GamingScore2",
 162                               stats.gaming * 10, 10, 200, 50);
 163   UMA_HISTOGRAM_BOOLEAN(
 164       "GPU.WinSAT.HasResults",
 165       stats.overall != 0.0 && stats.graphics != 0.0 && stats.gaming != 0.0);
 166
 167   return stats;
 168 }
 169
 170 // Returns the display link driver version or an invalid version if it is
 171 // not installed.
 172 Version DisplayLinkVersion() {
 173   base::win::RegKey key;
 174
 175   if (key.Open(HKEY_LOCAL_MACHINE, L"SOFTWARE", KEY_READ | KEY_WOW64_64KEY))
 176     return Version();
 177
 178   if (key.OpenKey(L"DisplayLink", KEY_READ | KEY_WOW64_64KEY))
 179     return Version();
 180
 181   if (key.OpenKey(L"Core", KEY_READ | KEY_WOW64_64KEY))
 182     return Version();
 183
 184   base::string16 version;
 185   if (key.ReadValue(L"Version", &version))
 186     return Version();
 187
 188   return Version(base::UTF16ToASCII(version));
 189 }
 190
 191 // Returns whether Lenovo dCute is installed.
 192 bool IsLenovoDCuteInstalled() {
 193   base::win::RegKey key;
 194
 195   if (key.Open(HKEY_LOCAL_MACHINE, L"SOFTWARE", KEY_READ | KEY_WOW64_64KEY))
 196     return false;
 197
 198   if (key.OpenKey(L"Lenovo", KEY_READ | KEY_WOW64_64KEY))
 199     return false;
 200
 201   if (key.OpenKey(L"Lenovo dCute", KEY_READ | KEY_WOW64_64KEY))
 202     return false;
 203
 204   return true;
 205 }
 206
 207 // Determines whether D3D11 won't work, either because it is not supported on
 208 // the machine or because it is known it is likely to crash.
 209 bool D3D11ShouldWork(const GPUInfo& gpu_info) {
 210   // TODO(apatrick): This is a temporary change to see what impact disabling
 211   // D3D11 stats collection has on Canary.
 212 #if 1
 213   return false;
 214 #else
 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 #endif
 226 }
 227
 228 // Collects information about the level of D3D11 support and records it in
 229 // the UMA stats. Records no stats when D3D11 in not supported at all.
 230 void CollectD3D11SupportOnWorkerThread() {
 231   TRACE_EVENT0("gpu", "CollectD3D11Support");
 232
 233   typedef HRESULT (WINAPI *D3D11CreateDeviceFunc)(
 234       IDXGIAdapter* adapter,
 235       D3D_DRIVER_TYPE driver_type,
 236       HMODULE software,
 237       UINT flags,
 238       const D3D_FEATURE_LEVEL* feature_levels,
 239       UINT num_feature_levels,
 240       UINT sdk_version,
 241       ID3D11Device** device,
 242       D3D_FEATURE_LEVEL* feature_level,
 243       ID3D11DeviceContext** immediate_context);
 244
 245   // This enumeration must be kept in sync with histograms.xml. Do not reorder
 246   // the members; always add to the end.
 247   enum FeatureLevel {
 248     FEATURE_LEVEL_UNKNOWN,
 249     FEATURE_LEVEL_NO_D3D11_DLL,
 250     FEATURE_LEVEL_NO_CREATE_DEVICE_ENTRY_POINT,
 251     FEATURE_LEVEL_DEVICE_CREATION_FAILED,
 252     FEATURE_LEVEL_9_1,
 253     FEATURE_LEVEL_9_2,
 254     FEATURE_LEVEL_9_3,
 255     FEATURE_LEVEL_10_0,
 256     FEATURE_LEVEL_10_1,
 257     FEATURE_LEVEL_11_0,
 258     NUM_FEATURE_LEVELS
 259   };
 260
 261   FeatureLevel feature_level = FEATURE_LEVEL_UNKNOWN;
 262   UINT bgra_support = 0;
 263
 264   // This module is leaked in case it is hooked by third party software.
 265   base::NativeLibrary d3d11_module = base::LoadNativeLibrary(
 266       base::FilePath(L"d3d11.dll"),
 267       NULL);
 268
 269   if (!d3d11_module) {
 270     feature_level = FEATURE_LEVEL_NO_D3D11_DLL;
 271   } else {
 272     D3D11CreateDeviceFunc create_func =
 273         reinterpret_cast<D3D11CreateDeviceFunc>(
 274             base::GetFunctionPointerFromNativeLibrary(d3d11_module,
 275                                                       "D3D11CreateDevice"));
 276     if (!create_func) {
 277       feature_level = FEATURE_LEVEL_NO_CREATE_DEVICE_ENTRY_POINT;
 278     } else {
 279       static const D3D_FEATURE_LEVEL d3d_feature_levels[] = {
 280         D3D_FEATURE_LEVEL_11_0,
 281         D3D_FEATURE_LEVEL_10_1,
 282         D3D_FEATURE_LEVEL_10_0,
 283         D3D_FEATURE_LEVEL_9_3,
 284         D3D_FEATURE_LEVEL_9_2,
 285         D3D_FEATURE_LEVEL_9_1
 286       };
 287
 288       base::win::ScopedComPtr<ID3D11Device> device;
 289       D3D_FEATURE_LEVEL d3d_feature_level;
 290       base::win::ScopedComPtr<ID3D11DeviceContext> device_context;
 291       HRESULT hr = create_func(NULL,
 292                                D3D_DRIVER_TYPE_HARDWARE,
 293                                NULL,
 294                                0,
 295                                d3d_feature_levels,
 296                                arraysize(d3d_feature_levels),
 297                                D3D11_SDK_VERSION,
 298                                device.Receive(),
 299                                &d3d_feature_level,
 300                                device_context.Receive());
 301       if (FAILED(hr)) {
 302         feature_level = FEATURE_LEVEL_DEVICE_CREATION_FAILED;
 303       } else {
 304         switch (d3d_feature_level) {
 305           case D3D_FEATURE_LEVEL_11_0:
 306             feature_level = FEATURE_LEVEL_11_0;
 307             break;
 308           case D3D_FEATURE_LEVEL_10_1:
 309             feature_level = FEATURE_LEVEL_10_1;
 310             break;
 311           case D3D_FEATURE_LEVEL_10_0:
 312             feature_level = FEATURE_LEVEL_10_0;
 313             break;
 314           case D3D_FEATURE_LEVEL_9_3:
 315             feature_level = FEATURE_LEVEL_9_3;
 316             break;
 317           case D3D_FEATURE_LEVEL_9_2:
 318             feature_level = FEATURE_LEVEL_9_2;
 319             break;
 320           case D3D_FEATURE_LEVEL_9_1:
 321             feature_level = FEATURE_LEVEL_9_1;
 322             break;
 323           default:
 324             NOTREACHED();
 325             break;
 326         }
 327
 328         hr = device->CheckFormatSupport(DXGI_FORMAT_B8G8R8A8_UNORM,
 329                                         &bgra_support);
 330         DCHECK(SUCCEEDED(hr));
 331       }
 332     }
 333   }
 334
 335   UMA_HISTOGRAM_ENUMERATION("GPU.D3D11_FeatureLevel",
 336                             feature_level,
 337                             NUM_FEATURE_LEVELS);
 338
 339   // ANGLE requires at least feature level 10.0. Do not record any further
 340   // stats if ANGLE would not work anyway.
 341   if (feature_level < FEATURE_LEVEL_10_0)
 342     return;
 343
 344   UMA_HISTOGRAM_BOOLEAN(
 345       "GPU.D3D11_B8G8R8A8_Texture2DSupport",
 346       (bgra_support & D3D11_FORMAT_SUPPORT_TEXTURE2D) != 0);
 347   UMA_HISTOGRAM_BOOLEAN(
 348       "GPU.D3D11_B8G8R8A8_RenderTargetSupport",
 349       (bgra_support & D3D11_FORMAT_SUPPORT_RENDER_TARGET) != 0);
 350 }
 351
 352 // Collects information about the level of D3D11 support and records it in
 353 // the UMA stats. Records no stats when D3D11 in not supported at all.
 354 void CollectD3D11Support() {
 355   // D3D11 takes about 50ms to initialize so do this on a worker thread.
 356   base::WorkerPool::PostTask(
 357       FROM_HERE,
 358       base::Bind(CollectD3D11SupportOnWorkerThread),
 359       false);
 360 }
 361 }  // namespace anonymous
 362
 363 #if !defined(GOOGLE_CHROME_BUILD)
 364 void GetAMDVideocardInfo(GPUInfo* gpu_info) {
 365   DCHECK(gpu_info);
 366   return;
 367 }
 368 #else
 369 // This function has a real implementation for official builds that can
 370 // be found in src/third_party/amd.
 371 void GetAMDVideocardInfo(GPUInfo* gpu_info);
 372 #endif
 373
 374 bool CollectDriverInfoD3D(const std::wstring& device_id,
 375                           GPUInfo* gpu_info) {
 376   TRACE_EVENT0("gpu", "CollectDriverInfoD3D");
 377
 378   // create device info for the display device
 379   HDEVINFO device_info = SetupDiGetClassDevsW(
 380       NULL, device_id.c_str(), NULL,
 381       DIGCF_PRESENT | DIGCF_PROFILE | DIGCF_ALLCLASSES);
 382   if (device_info == INVALID_HANDLE_VALUE) {
 383     LOG(ERROR) << "Creating device info failed";
 384     return false;
 385   }
 386
 387   DWORD index = 0;
 388   bool found = false;
 389   SP_DEVINFO_DATA device_info_data;
 390   device_info_data.cbSize = sizeof(device_info_data);
 391   while (SetupDiEnumDeviceInfo(device_info, index++, &device_info_data)) {
 392     WCHAR value[255];
 393     if (SetupDiGetDeviceRegistryPropertyW(device_info,
 394                                         &device_info_data,
 395                                         SPDRP_DRIVER,
 396                                         NULL,
 397                                         reinterpret_cast<PBYTE>(value),
 398                                         sizeof(value),
 399                                         NULL)) {
 400       HKEY key;
 401       std::wstring driver_key = L"System\\CurrentControlSet\\Control\\Class\\";
 402       driver_key += value;
 403       LONG result = RegOpenKeyExW(
 404           HKEY_LOCAL_MACHINE, driver_key.c_str(), 0, KEY_QUERY_VALUE, &key);
 405       if (result == ERROR_SUCCESS) {
 406         DWORD dwcb_data = sizeof(value);
 407         std::string driver_version;
 408         result = RegQueryValueExW(
 409             key, L"DriverVersion", NULL, NULL,
 410             reinterpret_cast<LPBYTE>(value), &dwcb_data);
 411         if (result == ERROR_SUCCESS)
 412           driver_version = base::UTF16ToASCII(std::wstring(value));
 413
 414         std::string driver_date;
 415         dwcb_data = sizeof(value);
 416         result = RegQueryValueExW(
 417             key, L"DriverDate", NULL, NULL,
 418             reinterpret_cast<LPBYTE>(value), &dwcb_data);
 419         if (result == ERROR_SUCCESS)
 420           driver_date = base::UTF16ToASCII(std::wstring(value));
 421
 422         std::string driver_vendor;
 423         dwcb_data = sizeof(value);
 424         result = RegQueryValueExW(
 425             key, L"ProviderName", NULL, NULL,
 426             reinterpret_cast<LPBYTE>(value), &dwcb_data);
 427         if (result == ERROR_SUCCESS) {
 428           driver_vendor = base::UTF16ToASCII(std::wstring(value));
 429           if (driver_vendor == "Advanced Micro Devices, Inc." ||
 430               driver_vendor == "ATI Technologies Inc.") {
 431             // We are conservative and assume that in the absence of a clear
 432             // signal the videocard is assumed to be switchable. Additionally,
 433             // some switchable systems with Intel GPUs aren't correctly
 434             // detected, so always count them.
 435             GetAMDVideocardInfo(gpu_info);
 436             if (!gpu_info->amd_switchable &&
 437                 gpu_info->gpu.vendor_id == 0x8086) {
 438               gpu_info->amd_switchable = true;
 439               gpu_info->secondary_gpus.push_back(gpu_info->gpu);
 440               gpu_info->gpu.vendor_id = 0x1002;
 441               gpu_info->gpu.device_id = 0;  // Unknown discrete AMD GPU.
 442             }
 443           }
 444         }
 445
 446         gpu_info->driver_vendor = driver_vendor;
 447         gpu_info->driver_version = driver_version;
 448         gpu_info->driver_date = driver_date;
 449         found = true;
 450         RegCloseKey(key);
 451         break;
 452       }
 453     }
 454   }
 455   SetupDiDestroyDeviceInfoList(device_info);
 456   return found;
 457 }
 458
 459 CollectInfoResult CollectContextGraphicsInfo(GPUInfo* gpu_info) {
 460   TRACE_EVENT0("gpu", "CollectGraphicsInfo");
 461
 462   DCHECK(gpu_info);
 463
 464   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseGL)) {
 465     std::string requested_implementation_name =
 466         CommandLine::ForCurrentProcess()->GetSwitchValueASCII(switches::kUseGL);
 467     if (requested_implementation_name == "swiftshader") {
 468       gpu_info->software_rendering = true;
 469       return kCollectInfoNonFatalFailure;
 470     }
 471   }
 472
 473   CollectInfoResult result = CollectGraphicsInfoGL(gpu_info);
 474   if (result != kCollectInfoSuccess)
 475     return result;
 476
 477   // ANGLE's renderer strings are of the form:
 478   // ANGLE (<adapter_identifier> Direct3D<version> vs_x_x ps_x_x)
 479   std::string direct3d_version;
 480   int vertex_shader_major_version = 0;
 481   int vertex_shader_minor_version = 0;
 482   int pixel_shader_major_version = 0;
 483   int pixel_shader_minor_version = 0;
 484   gpu_info->adapter_luid = 0;
 485   if (RE2::FullMatch(gpu_info->gl_renderer,
 486                      "ANGLE \\(.*\\)") &&
 487       RE2::PartialMatch(gpu_info->gl_renderer,
 488                         " Direct3D(\\w+)",
 489                         &direct3d_version) &&
 490       RE2::PartialMatch(gpu_info->gl_renderer,
 491                         " vs_(\\d+)_(\\d+)",
 492                         &vertex_shader_major_version,
 493                         &vertex_shader_minor_version) &&
 494       RE2::PartialMatch(gpu_info->gl_renderer,
 495                         " ps_(\\d+)_(\\d+)",
 496                         &pixel_shader_major_version,
 497                         &pixel_shader_minor_version)) {
 498     gpu_info->can_lose_context = direct3d_version == "9";
 499     gpu_info->vertex_shader_version =
 500         base::StringPrintf("%d.%d",
 501                            vertex_shader_major_version,
 502                            vertex_shader_minor_version);
 503     gpu_info->pixel_shader_version =
 504         base::StringPrintf("%d.%d",
 505                            pixel_shader_major_version,
 506                            pixel_shader_minor_version);
 507
 508     // ANGLE's EGL vendor strings are of the form:
 509     // Google, Inc. (adapter LUID: 0123456789ABCDEF)
 510     // The LUID is optional and identifies the GPU adapter ANGLE is using.
 511     const char* egl_vendor = eglQueryString(
 512         gfx::GLSurfaceEGL::GetHardwareDisplay(),
 513         EGL_VENDOR);
 514     RE2::PartialMatch(egl_vendor,
 515                       " \\(adapter LUID: ([0-9A-Fa-f]{16})\\)",
 516                       RE2::Hex(&gpu_info->adapter_luid));
 517
 518     // DirectX diagnostics are collected asynchronously because it takes a
 519     // couple of seconds. Do not mark gpu_info as complete until that is done.
 520     gpu_info->finalized = false;
 521   } else {
 522     gpu_info->finalized = true;
 523   }
 524
 525   return kCollectInfoSuccess;
 526 }
 527
 528 GpuIDResult CollectGpuID(uint32* vendor_id, uint32* device_id) {
 529   DCHECK(vendor_id && device_id);
 530   *vendor_id = 0;
 531   *device_id = 0;
 532
 533   // Taken from http://developer.nvidia.com/object/device_ids.html
 534   DISPLAY_DEVICE dd;
 535   dd.cb = sizeof(DISPLAY_DEVICE);
 536   std::wstring id;
 537   for (int i = 0; EnumDisplayDevices(NULL, i, &dd, 0); ++i) {
 538     if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
 539       id = dd.DeviceID;
 540       break;
 541     }
 542   }
 543
 544   if (id.length() > 20) {
 545     int vendor = 0, device = 0;
 546     std::wstring vendor_string = id.substr(8, 4);
 547     std::wstring device_string = id.substr(17, 4);
 548     base::HexStringToInt(base::UTF16ToASCII(vendor_string), &vendor);
 549     base::HexStringToInt(base::UTF16ToASCII(device_string), &device);
 550     *vendor_id = vendor;
 551     *device_id = device;
 552     if (*vendor_id != 0 && *device_id != 0)
 553       return kGpuIDSuccess;
 554   }
 555   return kGpuIDFailure;
 556 }
 557
 558 CollectInfoResult CollectBasicGraphicsInfo(GPUInfo* gpu_info) {
 559   TRACE_EVENT0("gpu", "CollectPreliminaryGraphicsInfo");
 560
 561   DCHECK(gpu_info);
 562
 563   gpu_info->performance_stats = RetrieveGpuPerformanceStatsWithHistograms();
 564
 565   // nvd3d9wrap.dll is loaded into all processes when Optimus is enabled.
 566   HMODULE nvd3d9wrap = GetModuleHandleW(L"nvd3d9wrap.dll");
 567   gpu_info->optimus = nvd3d9wrap != NULL;
 568
 569   gpu_info->lenovo_dcute = IsLenovoDCuteInstalled();
 570
 571   gpu_info->display_link_version = DisplayLinkVersion();
 572
 573   if (!gpu_info->display_link_version .IsValid()) {
 574     UMA_HISTOGRAM_ENUMERATION("GPU.DisplayLinkInstallationStatus",
 575                               DISPLAY_LINK_NOT_INSTALLED,
 576                               DISPLAY_LINK_INSTALLATION_STATUS_MAX);
 577   } else if (gpu_info->display_link_version.IsOlderThan("7.2")) {
 578     UMA_HISTOGRAM_ENUMERATION("GPU.DisplayLinkInstallationStatus",
 579                               DISPLAY_LINK_7_1_OR_EARLIER,
 580                               DISPLAY_LINK_INSTALLATION_STATUS_MAX);
 581   } else {
 582     UMA_HISTOGRAM_ENUMERATION("GPU.DisplayLinkInstallationStatus",
 583                               DISPLAY_LINK_7_2_OR_LATER,
 584                               DISPLAY_LINK_INSTALLATION_STATUS_MAX);
 585   }
 586
 587   // Taken from http://developer.nvidia.com/object/device_ids.html
 588   DISPLAY_DEVICE dd;
 589   dd.cb = sizeof(DISPLAY_DEVICE);
 590   std::wstring id;
 591   for (int i = 0; EnumDisplayDevices(NULL, i, &dd, 0); ++i) {
 592     if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
 593       id = dd.DeviceID;
 594       break;
 595     }
 596   }
 597
 598   if (id.length() <= 20)
 599     return kCollectInfoNonFatalFailure;
 600
 601   int vendor_id = 0, device_id = 0;
 602   base::string16 vendor_id_string = id.substr(8, 4);
 603   base::string16 device_id_string = id.substr(17, 4);
 604   base::HexStringToInt(base::UTF16ToASCII(vendor_id_string), &vendor_id);
 605   base::HexStringToInt(base::UTF16ToASCII(device_id_string), &device_id);
 606   gpu_info->gpu.vendor_id = vendor_id;
 607   gpu_info->gpu.device_id = device_id;
 608   // TODO(zmo): we only need to call CollectDriverInfoD3D() if we use ANGLE.
 609   if (!CollectDriverInfoD3D(id, gpu_info))
 610     return kCollectInfoNonFatalFailure;
 611
 612   // Collect basic information about supported D3D11 features. Delay for 45
 613   // seconds so as not to regress performance tests.
 614   if (D3D11ShouldWork(*gpu_info)) {
 615     // This is on a field trial so we can turn it off easily if it blows up
 616     // again in stable channel.
 617     scoped_refptr<base::FieldTrial> trial(
 618         base::FieldTrialList::FactoryGetFieldTrial(
 619             "D3D11Experiment", 100, "Disabled", 2015, 7, 8,
 620             base::FieldTrial::SESSION_RANDOMIZED, NULL));
 621     const int enabled_group =
 622         trial->AppendGroup("Enabled", 0);
 623
 624     if (trial->group() == enabled_group) {
 625       base::MessageLoop::current()->PostDelayedTask(
 626           FROM_HERE,
 627           base::Bind(&CollectD3D11Support),
 628           base::TimeDelta::FromSeconds(45));
 629     }
 630   }
 631
 632   return kCollectInfoSuccess;
 633 }
 634
 635 CollectInfoResult CollectDriverInfoGL(GPUInfo* gpu_info) {
 636   TRACE_EVENT0("gpu", "CollectDriverInfoGL");
 637
 638   if (!gpu_info->driver_version.empty())
 639     return kCollectInfoSuccess;
 640
 641   bool parsed = RE2::PartialMatch(
 642       gpu_info->gl_version, "([\\d\\.]+)$", &gpu_info->driver_version);
 643   return parsed ? kCollectInfoSuccess : kCollectInfoNonFatalFailure;
 644 }
 645
 646 void MergeGPUInfo(GPUInfo* basic_gpu_info,
 647                   const GPUInfo& context_gpu_info) {
 648   DCHECK(basic_gpu_info);
 649
 650   if (context_gpu_info.software_rendering) {
 651     basic_gpu_info->software_rendering = true;
 652     return;
 653   }
 654
 655   MergeGPUInfoGL(basic_gpu_info, context_gpu_info);
 656
 657   basic_gpu_info->dx_diagnostics = context_gpu_info.dx_diagnostics;
 658 }
 659
 660 }  // namespace gpu