text: //
  // Copyright (c) 2008-2017 the Urho3D project.
  //
  // 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 "../../Precompiled.h"
  
  #include "../../Graphics/Graphics.h"
  #include "../../Graphics/GraphicsImpl.h"
  
  #include "../../DebugNew.h"
  
  namespace Urho3D
  {
  
  GraphicsImpl::GraphicsImpl() :
      interface_(0),
      device_(0),
      defaultColorSurface_(0),
      defaultDepthStencilSurface_(0),
      frameQuery_(0),
      adapter_(D3DADAPTER_DEFAULT),
      deviceType_(D3DDEVTYPE_HAL),
      shaderProgram_(0),
      deviceLost_(false),
      queryIssued_(false)
  {
      memset(&presentParams_, 0, sizeof presentParams_);
  }
  
  bool GraphicsImpl::CheckFormatSupport(D3DFORMAT format, DWORD usage, D3DRESOURCETYPE type)
  {
      return interface_ ? SUCCEEDED(interface_->CheckDeviceFormat(adapter_, deviceType_, D3DFMT_X8R8G8B8, usage, type, format)) :
          false;
  }
  
  bool GraphicsImpl::CheckMultiSampleSupport(D3DFORMAT format, int level)
  {
      return interface_ ? SUCCEEDED(interface_->CheckDeviceMultiSampleType(adapter_, deviceType_, format, FALSE,
          (D3DMULTISAMPLE_TYPE)level, NULL)) : false;
  }
  
  }
  