text: /******************************************************************************
   * The MIT License (MIT)
   *
   * Copyright (c) 2019-2021 Baldur Karlsson
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   ******************************************************************************/
  
  #include "dxbc_compile.h"
  #include "common/common.h"
  #include "core/core.h"
  #include "os/os_specific.h"
  #include "strings/string_utils.h"
  
  static HMODULE GetLocalD3DCompiler()
  {
    rdcstr dllFile;
    FileIO::GetLibraryFilename(dllFile);
  
    rdcstr dll = get_dirname(dllFile) + "/d3dcompiler_47.dll";
  
    return LoadLibraryW(StringFormat::UTF82Wide(dll).data());
  }
  
  HMODULE GetD3DCompiler()
  {
    static HMODULE ret = NULL;
    if(ret != NULL)
      return ret;
  
    // during replay, try to load our local one to get the newest possible.
    if(RenderDoc::Inst().IsReplayApp())
    {
      ret = GetLocalD3DCompiler();
      if(ret)
        return ret;
    }
  
    // now dlls to try in priority order
    const char *dlls[] = {
        "d3dcompiler_47.dll", "d3dcompiler_46.dll", "d3dcompiler_45.dll",
        "d3dcompiler_44.dll", "d3dcompiler_43.dll",
    };
  
    for(int i = 0; i < 2; i++)
    {
      for(int d = 0; d < ARRAY_COUNT(dlls); d++)
      {
        // first time around, try to load one that already exists. Second time around try to load it
        // in the default search path.
        if(i == 0)
          ret = GetModuleHandleA(dlls[d]);
        else
          ret = LoadLibraryA(dlls[d]);
  
        if(ret != NULL)
          return ret;
      }
    }
  
    // finally if we couldn't load a library anywhere from the system while capturing, load our local
    // compiler.
    ret = GetLocalD3DCompiler();
  
    return ret;
  }
  