/*=========================================================================

  Program:   Visualization Toolkit

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#include "vtkOpenGLHelper.h"

#include "vtkOpenGLIndexBufferObject.h"
#include "vtkOpenGLVertexArrayObject.h"
#include "vtkShaderProgram.h"

vtkOpenGLHelper::vtkOpenGLHelper()
{
  this->Program = NULL;
  this->IBO = vtkOpenGLIndexBufferObject::New();
  this->VAO = vtkOpenGLVertexArrayObject::New();
}

vtkOpenGLHelper::~vtkOpenGLHelper()
{
  this->IBO->Delete();
  this->VAO->Delete();
}

void vtkOpenGLHelper::ReleaseGraphicsResources(vtkWindow * vtkNotUsed(win))
{
  if (this->Program)
    {
    // Let ShaderCache release the graphics resources as it is
    // responsible for creation and deletion.
    this->Program = 0;
    }
  this->IBO->ReleaseGraphicsResources();
  this->VAO->ReleaseGraphicsResources();
}
