kc3-lang/angle/src/libOpenCL/dispatch.cpp

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• Hash : dfe208f1
  Author :
  Date : 2021-04-28T18:26:00
  

  Add loader for CL pass-through back end
  
  Bug: angleproject:5904
  Change-Id: If4960f3150f6bbc85a30f0f6ac5c9e668e6ff756
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2864022
  Commit-Queue: John Plate <jplate@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  

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• src/libOpenCL/dispatch.cpp

• //
  // Copyright 2021 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.
  //
  // dispatch.cpp: Implements a function to fetch the ANGLE OpenCL dispatch table.
  
  #include "libOpenCL/dispatch.h"
  
  #include "anglebase/no_destructor.h"
  #include "common/system_utils.h"
  
  #include <iostream>
  #include <memory>
  
  namespace cl
  {
  
  namespace
  {
  
  std::unique_ptr<angle::Library> &EntryPointsLib()
  {
      static angle::base::NoDestructor<std::unique_ptr<angle::Library>> sEntryPointsLib;
      return *sEntryPointsLib;
  }
  
  IcdDispatch CreateDispatch()
  {
      IcdDispatch dispatch;
  
      EntryPointsLib().reset(
          angle::OpenSharedLibrary(ANGLE_GLESV2_LIBRARY_NAME, angle::SearchType::ApplicationDir));
      if (EntryPointsLib())
      {
          auto clIcdDispatch = reinterpret_cast<const cl_icd_dispatch *>(
              EntryPointsLib()->getSymbol("gCLIcdDispatchTable"));
          if (clIcdDispatch != nullptr)
          {
              static_cast<cl_icd_dispatch &>(dispatch) = *clIcdDispatch;
              dispatch.clIcdGetPlatformIDsKHR          = reinterpret_cast<clIcdGetPlatformIDsKHR_fn>(
                  clIcdDispatch->clGetExtensionFunctionAddress("clIcdGetPlatformIDsKHR"));
          }
          else
          {
              std::cerr << "Error loading CL dispatch table." << std::endl;
          }
      }
      else
      {
          std::cerr << "Error opening GLESv2 library." << std::endl;
      }
  
      return dispatch;
  }
  
  }  // anonymous namespace
  
  const IcdDispatch &GetDispatch()
  {
      static const IcdDispatch sDispatch(CreateDispatch());
      return sDispatch;
  }
  
  }  // namespace cl
  

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