kc3-lang/angle/src/common/system_utils_win.cpp

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• Hash : 1f56ed2a
  Author :
  Date : 2019-01-03T15:24:22
  

  Add WGLWindow and WGL test configs.
  
  WGLWindow lets us use a Windows driver's bindings instead of ANGLE.
  This only works if the underlying driver supports OpenGL ES
  compatibility.
  
  Also adds the WGL headers, WGL XML, and a specialized WGL loader.
  
  Because of a small driver issue with NVIDIA I added a retry for the WGL
  Window initialization.
  
  Bug: angleproject:2995
  Change-Id: Ie5148ece470dd03df33015f4919ad1fa79a859ec
  Reviewed-on: https://chromium-review.googlesource.com/c/1366021
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  

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• src/common/system_utils_win.cpp

• //
  // Copyright (c) 2014 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.
  //
  
  // system_utils_win.cpp: Implementation of OS-specific functions for Windows
  
  #include "system_utils.h"
  
  #include <stdarg.h>
  #include <windows.h>
  #include <array>
  #include <vector>
  
  namespace angle
  {
  
  namespace
  {
  
  std::string GetExecutablePathImpl()
  {
      std::array<char, MAX_PATH> executableFileBuf;
      DWORD executablePathLen = GetModuleFileNameA(nullptr, executableFileBuf.data(),
                                                   static_cast<DWORD>(executableFileBuf.size()));
      return (executablePathLen > 0 ? std::string(executableFileBuf.data()) : "");
  }
  
  std::string GetExecutableDirectoryImpl()
  {
      std::string executablePath = GetExecutablePath();
      size_t lastPathSepLoc      = executablePath.find_last_of("\\/");
      return (lastPathSepLoc != std::string::npos) ? executablePath.substr(0, lastPathSepLoc) : "";
  }
  
  }  // anonymous namespace
  
  const char *GetExecutablePath()
  {
      // TODO(jmadill): Make global static string thread-safe.
      const static std::string &exePath = GetExecutablePathImpl();
      return exePath.c_str();
  }
  
  const char *GetExecutableDirectory()
  {
      // TODO(jmadill): Make global static string thread-safe.
      const static std::string &exeDir = GetExecutableDirectoryImpl();
      return exeDir.c_str();
  }
  
  const char *GetSharedLibraryExtension()
  {
      return "dll";
  }
  
  Optional<std::string> GetCWD()
  {
      std::array<char, MAX_PATH> pathBuf;
      DWORD result = GetCurrentDirectoryA(static_cast<DWORD>(pathBuf.size()), pathBuf.data());
      if (result == 0)
      {
          return Optional<std::string>::Invalid();
      }
      return std::string(pathBuf.data());
  }
  
  bool SetCWD(const char *dirName)
  {
      return (SetCurrentDirectoryA(dirName) == TRUE);
  }
  
  bool UnsetEnvironmentVar(const char *variableName)
  {
      return (SetEnvironmentVariableA(variableName, nullptr) == TRUE);
  }
  
  bool SetEnvironmentVar(const char *variableName, const char *value)
  {
      return (SetEnvironmentVariableA(variableName, value) == TRUE);
  }
  
  std::string GetEnvironmentVar(const char *variableName)
  {
      std::array<char, MAX_PATH> oldValue;
      DWORD result =
          GetEnvironmentVariableA(variableName, oldValue.data(), static_cast<DWORD>(oldValue.size()));
      if (result == 0)
      {
          return std::string();
      }
      else
      {
          return std::string(oldValue.data());
      }
  }
  
  const char *GetPathSeparator()
  {
      return ";";
  }
  
  class Win32Library : public Library
  {
    public:
      Win32Library(const char *libraryName)
      {
          char buffer[MAX_PATH];
          int ret = snprintf(buffer, MAX_PATH, "%s.%s", libraryName, GetSharedLibraryExtension());
          if (ret > 0 && ret < MAX_PATH)
          {
              mModule = LoadLibraryA(buffer);
          }
      }
  
      ~Win32Library() override
      {
          if (mModule)
          {
              FreeLibrary(mModule);
          }
      }
  
      void *getSymbol(const char *symbolName) override
      {
          if (!mModule)
          {
              return nullptr;
          }
  
          return reinterpret_cast<void *>(GetProcAddress(mModule, symbolName));
      }
  
      void *getNative() const override { return reinterpret_cast<void *>(mModule); }
  
    private:
      HMODULE mModule = nullptr;
  };
  
  Library *OpenSharedLibrary(const char *libraryName)
  {
      return new Win32Library(libraryName);
  }
  }  // namespace angle
  

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