text: /*=========================================================================
  
    Program:   Visualization Toolkit
    Module:    vtkOpenGLDisplayListPainter.h
  
    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.
  
  =========================================================================*/
  /**
   * @class   vtkOpenGLDisplayListPainter
   * @brief   display list painter using OpenGL.
   *
   * vtkOpenGLDisplayListPainter creates an OpenGL display list for rendering.
   * This painter creates a different display list for every render request with a
   * different set of typeflags. If any of the data or inputs change, then all
   * display lists are discarded.
  */
  
  #ifndef vtkOpenGLDisplayListPainter_h
  #define vtkOpenGLDisplayListPainter_h
  
  #include "vtkRenderingOpenGLModule.h" // For export macro
  #include "vtkDisplayListPainter.h"
  
  class VTKRENDERINGOPENGL_EXPORT vtkOpenGLDisplayListPainter : public vtkDisplayListPainter
  {
  public:
    static vtkOpenGLDisplayListPainter* New();
    vtkTypeMacro(vtkOpenGLDisplayListPainter, vtkDisplayListPainter);
    void PrintSelf(ostream& os, vtkIndent indent);
  
    /**
     * Release any graphics resources that are being consumed by this mapper.
     * The parameter window could be used to determine which graphic
     * resources to release. In this case, releases the display lists.
     */
    virtual void ReleaseGraphicsResources(vtkWindow *);
  
  protected:
  
    vtkOpenGLDisplayListPainter();
    ~vtkOpenGLDisplayListPainter();
  
    /**
     * If not using ImmediateModeRendering, this will build a display list,
     * if outdated and use the display list.
     */
    virtual void RenderInternal(vtkRenderer* renderer, vtkActor* actor,
                                unsigned long typeflags,
                                bool forceCompileOnly);
  
  private:
    vtkOpenGLDisplayListPainter(const vtkOpenGLDisplayListPainter&) VTK_DELETE_FUNCTION;
    void operator=(const vtkOpenGLDisplayListPainter&) VTK_DELETE_FUNCTION;
  
    class vtkInternals;
    vtkInternals* Internals;
  
  };
  
  #endif
  
  