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

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• Hash : 11dc1635
  Author :
  Date : 2019-09-18T14:46:23
  

  Add support for generating UWP (Windows Store) projects again
  
  Until late 2017, ANGLE supported  Windows Store apps on Windows 8.1,
  Windows Phone 8.1, and Windows 10 (via the Universal Windows
  Platform, aka UWP).
  
  Unfortunately ANGLE deprecated support for Windows Store when it
  switched from GYP to GN in 2017. Since then, users have been able
  to use Microsoft\angle for their UWP apps but this isn't ideal since
  it's based on a 2017 copy of Google\angle.
  
  This PR bring back support for UWPs, so that UWP users can use
  Google\angle again. Specifically it:
  
  - Adds support for generating UWP projects via GN
  - Adds helper/util functions specific to UWP (they're mostly
  similar to the desktop Windows helpers)
  - Fixes some existing Windows Store code that's rotted since 2017
  - Disables async shader compilation for UWPs, since its
  implementation calls wait on the UI thread (which is forbidden
  in UWPs)
  - Renames 'ANGLE_ENABLE_WINDOWS_STORE' to
  'ANGLE_ENABLE_WINDOWS_UWP', since ANGLE only support UWPs now
  - Fixes misc other related issues (such as dependencies on D3D9
  headers in API-agnostic code)
  
  Note that this doesn't bring back support for Windows/Phone 8.1.
  
  BUG=angleproject:3922
  
  Change-Id: Ia79ae05a5e0e0a0625eb633bf1928722dfd3e85f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1811871
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/gpu_info_util/SystemInfo_win.cpp

• //
  // Copyright 2013 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_win.cpp: implementation of the Windows-specific parts of SystemInfo.h
  
  #include "gpu_info_util/SystemInfo_internal.h"
  
  #include "common/debug.h"
  #include "common/string_utils.h"
  
  // Windows.h needs to be included first
  #include <windows.h>
  
  #include <dxgi.h>
  
  #include <array>
  #include <sstream>
  
  namespace angle
  {
  
  namespace
  {
  
  bool GetDevicesFromDXGI(std::vector<GPUDeviceInfo> *devices)
  {
  #if defined(ANGLE_ENABLE_WINDOWS_UWP)
      IDXGIFactory1 *factory;
      if (!SUCCEEDED(
              CreateDXGIFactory1(__uuidof(IDXGIFactory1), reinterpret_cast<void **>(&factory))))
      {
          return false;
      }
  #else
      IDXGIFactory *factory;
      if (!SUCCEEDED(CreateDXGIFactory(__uuidof(IDXGIFactory), reinterpret_cast<void **>(&factory))))
      {
          return false;
      }
  #endif
  
      UINT i                = 0;
      IDXGIAdapter *adapter = nullptr;
      while (factory->EnumAdapters(i++, &adapter) != DXGI_ERROR_NOT_FOUND)
      {
          DXGI_ADAPTER_DESC desc;
          adapter->GetDesc(&desc);
  
          LARGE_INTEGER umdVersion;
          if (adapter->CheckInterfaceSupport(__uuidof(IDXGIDevice), &umdVersion) ==
              DXGI_ERROR_UNSUPPORTED)
          {
              adapter->Release();
              continue;
          }
  
          // The UMD driver version here is the same as in the registry except for the last number.
          uint64_t intVersion = umdVersion.QuadPart;
          std::ostringstream o;
  
          constexpr uint64_t kMask16 = std::numeric_limits<uint16_t>::max();
          o << ((intVersion >> 48) & kMask16) << ".";
          o << ((intVersion >> 32) & kMask16) << ".";
          o << ((intVersion >> 16) & kMask16) << ".";
          o << (intVersion & kMask16);
  
          GPUDeviceInfo device;
          device.vendorId      = desc.VendorId;
          device.deviceId      = desc.DeviceId;
          device.driverVersion = o.str();
  
          devices->push_back(device);
  
          adapter->Release();
      }
  
      factory->Release();
  
      return (i > 0);
  }
  
  }  // anonymous namespace
  
  bool GetSystemInfo(SystemInfo *info)
  {
      if (!GetDevicesFromDXGI(&info->gpus))
      {
          return false;
      }
  
      if (info->gpus.size() == 0)
      {
          return false;
      }
  
      // Call GetDualGPUInfo to populate activeGPUIndex, isOptimus, and isAMDSwitchable.
      GetDualGPUInfo(info);
  
      // Override activeGPUIndex. The first index returned by EnumAdapters is the active GPU. We
      // can override the heuristic to find the active GPU
      info->activeGPUIndex = 0;
  
  #if !defined(ANGLE_ENABLE_WINDOWS_UWP)
      // Override isOptimus. nvd3d9wrap.dll is loaded into all processes when Optimus is enabled.
      HMODULE nvd3d9wrap = GetModuleHandleW(L"nvd3d9wrap.dll");
      info->isOptimus    = nvd3d9wrap != nullptr;
  #endif
  
      return true;
  }
  
  }  // namespace angle
  

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