vtkImageProcessingPass.h 2.79 KB
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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkImageProcessingPass.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.

=========================================================================*/
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/**
 * @class   vtkImageProcessingPass
 * @brief   Convenient class for post-processing passes.
 * render pass.
 *
 * Abstract class with some convenient methods frequently used in subclasses.
 *
 *
 * @sa
 * vtkRenderPass vtkGaussianBlurPass vtkSobelGradientMagnitudePass
*/
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#ifndef vtkImageProcessingPass_h
#define vtkImageProcessingPass_h
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#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkRenderPass.h"

class vtkOpenGLRenderWindow;
class vtkDepthPeelingPassLayerList; // Pimpl
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class vtkOpenGLFramebufferObject;
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class vtkTextureObject;

class VTKRENDERINGOPENGL2_EXPORT vtkImageProcessingPass : public vtkRenderPass
{
public:
  vtkTypeMacro(vtkImageProcessingPass,vtkRenderPass);
  void PrintSelf(ostream& os, vtkIndent indent);

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  /**
   * Release graphics resources and ask components to release their own
   * resources.
   * \pre w_exists: w!=0
   */
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  void ReleaseGraphicsResources(vtkWindow *w);

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  //@{
  /**
   * Delegate for rendering the image to be processed.
   * If it is NULL, nothing will be rendered and a warning will be emitted.
   * It is usually set to a vtkCameraPass or to a post-processing pass.
   * Initial value is a NULL pointer.
   */
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  vtkGetObjectMacro(DelegatePass,vtkRenderPass);
  virtual void SetDelegatePass(vtkRenderPass *delegatePass);
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  //@}
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 protected:
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  /**
   * Default constructor. DelegatePass is set to NULL.
   */
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  vtkImageProcessingPass();

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  /**
   * Destructor.
   */
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  virtual ~vtkImageProcessingPass();

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  /**
   * Render delegate with a image of different dimensions than the
   * original one.
   * \pre s_exists: s!=0
   * \pre fbo_exists: fbo!=0
   * \pre fbo_has_context: fbo->GetContext()!=0
   * \pre target_exists: target!=0
   * \pre target_has_context: target->GetContext()!=0
   */
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  void RenderDelegate(const vtkRenderState *s,
                      int width,
                      int height,
                      int newWidth,
                      int newHeight,
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                      vtkOpenGLFramebufferObject *fbo,
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                      vtkTextureObject *target);


  vtkRenderPass *DelegatePass;

 private:
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  vtkImageProcessingPass(const vtkImageProcessingPass&) VTK_DELETE_FUNCTION;
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  void operator=(const vtkImageProcessingPass&) VTK_DELETE_FUNCTION;
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};

#endif