kc3-lang/angle/src/gpu_info_util/SystemInfo.cpp

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• Author : Corentin Wallez
  Date : 2017-03-24 11:58:59
  Hash : 8f77e5d3
  Message : gpu_info_util: Implement GetSystemInfo on Windows BUG=angleproject:1874 Change-Id: I97a02d2c8b1f7ecb530684464fc02f528d34de7c Reviewed-on: https://chromium-review.googlesource.com/458965 Reviewed-by: Austin Kinross <aukinros@microsoft.com> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Corentin Wallez <cwallez@chromium.org>

• src/gpu_info_util/SystemInfo.cpp

• //
  // Copyright (c) 2013-2017 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // SystemInfo.cpp: implementation of the system-agnostic parts of SystemInfo.h
  
  #include "gpu_info_util/SystemInfo.h"
  
  #include <cstring>
  #include <sstream>
  
  #include "common/debug.h"
  #include "common/string_utils.h"
  
  namespace angle
  {
  
  bool IsAMD(VendorID vendorId)
  {
      return vendorId == kVendorID_AMD;
  }
  
  bool IsIntel(VendorID vendorId)
  {
      return vendorId == kVendorID_Intel;
  }
  
  bool IsNvidia(VendorID vendorId)
  {
      return vendorId == kVendorID_Nvidia;
  }
  
  bool IsQualcomm(VendorID vendorId)
  {
      return vendorId == kVendorID_Qualcomm;
  }
  
  bool ParseAMDBrahmaDriverVersion(const std::string &content, std::string *version)
  {
      const size_t begin = content.find_first_of("0123456789");
      if (begin == std::string::npos)
      {
          return false;
      }
  
      const size_t end = content.find_first_not_of("0123456789.", begin);
      if (end == std::string::npos)
      {
          *version = content.substr(begin);
      }
      else
      {
          *version = content.substr(begin, end - begin);
      }
      return true;
  }
  
  bool ParseAMDCatalystDriverVersion(const std::string &content, std::string *version)
  {
      std::istringstream stream(content);
  
      std::string line;
      while (std::getline(stream, line))
      {
          static const char kReleaseVersion[] = "ReleaseVersion=";
          if (line.compare(0, std::strlen(kReleaseVersion), kReleaseVersion) != 0)
          {
              continue;
          }
  
          if (ParseAMDBrahmaDriverVersion(line, version))
          {
              return true;
          }
      }
      return false;
  }
  
  bool ParseMacMachineModel(const std::string &identifier,
                            std::string *type,
                            int32_t *major,
                            int32_t *minor)
  {
      size_t numberLoc = identifier.find_first_of("0123456789");
      if (numberLoc == std::string::npos)
      {
          return false;
      }
  
      size_t commaLoc = identifier.find(',', numberLoc);
      if (commaLoc == std::string::npos || commaLoc >= identifier.size())
      {
          return false;
      }
  
      const char *numberPtr = &identifier[numberLoc];
      const char *commaPtr  = &identifier[commaLoc + 1];
      char *endPtr          = nullptr;
  
      int32_t majorTmp = std::strtol(numberPtr, &endPtr, 10);
      if (endPtr == numberPtr)
      {
          return false;
      }
  
      int32_t minorTmp = std::strtol(commaPtr, &endPtr, 10);
      if (endPtr == commaPtr)
      {
          return false;
      }
  
      *major = majorTmp;
      *minor = minorTmp;
      *type  = identifier.substr(0, numberLoc);
  
      return true;
  }
  
  bool CMDeviceIDToDeviceAndVendorID(const std::string &id, uint32_t *vendorId, uint32_t *deviceId)
  {
      unsigned int vendor = 0;
      unsigned int device = 0;
  
      bool success = id.length() >= 21 && HexStringToUInt(id.substr(8, 4), &vendor) &&
                     HexStringToUInt(id.substr(17, 4), &device);
  
      *vendorId = vendor;
      *deviceId = device;
      return success;
  }
  
  void FindPrimaryGPU(SystemInfo *info)
  {
      ASSERT(!info->gpus.empty());
  
      // On dual-GPU systems we assume the non-Intel GPU is the primary one.
      int primary   = 0;
      bool hasIntel = false;
      for (size_t i = 0; i < info->gpus.size(); ++i)
      {
          if (IsIntel(info->gpus[i].vendorId))
          {
              hasIntel = true;
          }
          if (IsIntel(info->gpus[primary].vendorId))
          {
              primary = static_cast<int>(i);
          }
      }
  
      // Assume that a combination of AMD or Nvidia with Intel means Optimus or AMD Switchable
      info->primaryGPUIndex = primary;
      info->isOptimus       = hasIntel && IsNvidia(info->gpus[primary].vendorId);
      info->isAMDSwitchable = hasIntel && IsAMD(info->gpus[primary].vendorId);
  }
  
  }  // namespace angle