#ifndef COIN_SODEPTHBUFFER_H
#define COIN_SODEPTHBUFFER_H

/**************************************************************************\
 * Copyright (c) Kongsberg Oil & Gas Technologies AS
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * 
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * 
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
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\**************************************************************************/

#include <Inventor/fields/SoSFEnum.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/fields/SoSFVec2f.h>
#include <Inventor/nodes/SoSubNode.h>
#include <Inventor/elements/SoDepthBufferElement.h>

class COIN_DLL_API SoDepthBuffer : public SoNode {
  typedef SoNode inherited;

  SO_NODE_HEADER(SoDepthBuffer);

public:
  static void initClass(void);
  SoDepthBuffer(void);

  enum DepthWriteFunction {
    NEVER = SoDepthBufferElement::NEVER,
    ALWAYS = SoDepthBufferElement::ALWAYS,
    LESS = SoDepthBufferElement::LESS,
    LEQUAL = SoDepthBufferElement::LEQUAL,
    EQUAL = SoDepthBufferElement::EQUAL,
    GEQUAL = SoDepthBufferElement::GEQUAL,
    GREATER = SoDepthBufferElement::GREATER,
    NOTEQUAL = SoDepthBufferElement::NOTEQUAL
  };

  SoSFBool test;
  SoSFBool write;
  SoSFEnum function;
  SoSFVec2f range;

  virtual void GLRender(SoGLRenderAction * action);

protected:
  virtual ~SoDepthBuffer();

}; // SoDepthBuffer

#endif // !COIN_SODEPTHBUFFER_H
