text: /*
   * Copyright (c) 2020 Samsung Electronics Co., Ltd.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use *this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   */
  
  // CLASS HEADER
  #include <dali/public-api/rendering/frame-buffer.h>
  
  // EXTERNAL INCLUDES
  #include <type_traits>
  
  // INTERNAL INCLUDES
  #include <dali/integration-api/debug.h> // DALI_LOG_WARNING_NOFN
  #include <dali/internal/event/rendering/frame-buffer-impl.h> // Dali::Internal::FrameBuffer
  #include <dali/internal/event/rendering/texture-impl.h> // Dali::Internal::Texture
  
  namespace Dali
  {
  
  namespace
  {
  /// Bool operator for FrameBuffer::Attachment::Mask.
  /// in cpp as only used in this file
  bool operator&( FrameBuffer::Attachment::Mask lhs, FrameBuffer::Attachment::Mask rhs )
  {
    using UnderlyingType = typename std::underlying_type< FrameBuffer::Attachment::Mask >::type;
    return static_cast<bool>( static_cast<UnderlyingType>( lhs ) & static_cast<UnderlyingType>( rhs ) );
  }
  
  } // unnamed namespace
  
  FrameBuffer FrameBuffer::New( uint32_t width, uint32_t height )
  {
    return New( width, height, FrameBuffer::Attachment::COLOR );
  }
  
  FrameBuffer FrameBuffer::New( uint32_t width, uint32_t height, Attachment::Mask attachments )
  {
    Internal::FrameBufferPtr frameBuffer = Internal::FrameBuffer::New( width, height, attachments );
    if( attachments & FrameBuffer::Attachment::COLOR )
    {
      Internal::TexturePtr texture = Internal::Texture::New( Dali::TextureType::TEXTURE_2D, Pixel::RGB888, width, height );
      frameBuffer->AttachColorTexture( texture, 0u, 0u );
    }
    return FrameBuffer( frameBuffer.Get() );
  }
  
  FrameBuffer FrameBuffer::New( uint32_t width, uint32_t height, uint32_t attachments )
  {
    DALI_LOG_WARNING_NOFN("DEPRECATION WARNING: FrameBuffer::New(uint32_t,uint32_t,uint32_t) is deprecated and will be removed from next release. use New(uint32_t, uint32_t,Attachment::Mask) instead.\n" );
    // have to static cast, which according to standard since C++11 is undefined behaviour, hence this variant is deprecated
    Internal::FrameBufferPtr frameBuffer = Internal::FrameBuffer::New( width, height, static_cast<Attachment::Mask>( attachments ) );
    return FrameBuffer( frameBuffer.Get() );
  }
  
  FrameBuffer::FrameBuffer()
  {
  }
  
  FrameBuffer::~FrameBuffer()
  {
  }
  
  FrameBuffer::FrameBuffer( const FrameBuffer& handle )
  : BaseHandle( handle )
  {
  }
  
  FrameBuffer FrameBuffer::DownCast( BaseHandle handle )
  {
    return FrameBuffer( dynamic_cast<Dali::Internal::FrameBuffer*>(handle.GetObjectPtr()));
  }
  
  FrameBuffer& FrameBuffer::operator=( const FrameBuffer& handle )
  {
    BaseHandle::operator=( handle );
    return *this;
  }
  
  FrameBuffer::FrameBuffer( Internal::FrameBuffer* pointer )
  : BaseHandle( pointer )
  {
  }
  
  void FrameBuffer::AttachColorTexture( Texture& texture )
  {
    AttachColorTexture( texture, 0u, 0u );
  }
  
  void FrameBuffer::AttachColorTexture( Texture& texture, uint32_t mipmapLevel, uint32_t layer )
  {
    if( texture )
    {
      Internal::TexturePtr texturePtr( &GetImplementation( texture ) );
      GetImplementation(*this).AttachColorTexture( texturePtr, mipmapLevel, layer );
    }
  }
  
  Texture FrameBuffer::GetColorTexture()
  {
    Internal::Texture* texturePtr = GetImplementation(*this).GetColorTexture(0);
    return Dali::Texture( texturePtr );
  }
  
  } //namespace Dali
  