Source code

/******************************************************************************
 *
 * Copyright (c) 2016 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 *    notice, this list of conditions, and the following disclaimer.
 *  
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
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 *
 *  D3D12AlphaBlendDesc.h
 *
 *****************************************************************************/

// 2016/09/25

#include <sol/direct3d12/D3D12BlendDesc.h>

namespace SOL {

class D3D12AlphaBlendDesc : public D3D12BlendDesc {

private:
  static  D3D12_RENDER_TARGET_BLEND_DESC getAlphaBlend()
  {
    static D3D12_RENDER_TARGET_BLEND_DESC rtbDesc;
    memset(&rtbDesc, 0, sizeof(rtbDesc));
      rtbDesc.BlendEnable    = true;
      rtbDesc.SrcBlend       = D3D12_BLEND_SRC_ALPHA;
      rtbDesc.DestBlend      = D3D12_BLEND_INV_SRC_ALPHA;
      rtbDesc.BlendOp        = D3D12_BLEND_OP_ADD;
      rtbDesc.SrcBlendAlpha  = D3D12_BLEND_ONE;
      rtbDesc.DestBlendAlpha = D3D12_BLEND_ZERO;
      rtbDesc.BlendOpAlpha   = D3D12_BLEND_OP_ADD;
      rtbDesc.RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
    return rtbDesc;  
  }
        
public:
  D3D12AlphaBlendDesc()
  :D3D12BlendDesc(getAlphaBlend())
  {
  }

};

}