vtkOpenGLRenderer.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkOpenGLRenderer.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.
 
=========================================================================*/
#ifndef vtkOpenGLRenderer_h
#define vtkOpenGLRenderer_h
 
#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkRenderer.h"
 
class vtkOpenGLRendererLayerList; // Pimpl
class vtkRenderPass;
class vtkShaderProgram2;
 
class VTKRENDERINGOPENGL_EXPORT vtkOpenGLRenderer : public vtkRenderer
{
public:
  static vtkOpenGLRenderer *New();
  vtkTypeMacro(vtkOpenGLRenderer, vtkRenderer);
  void PrintSelf(ostream& os, vtkIndent indent);
 
  void DeviceRender(void);
 
  virtual void DeviceRenderTranslucentPolygonalGeometry();
 
  void ClearLights(void);
 
  virtual void Clear(void);
 
  int UpdateLights(void);
 
  int GetDepthPeelingHigherLayer();
 
  //BTX
 */
  vtkGetObjectMacro(ShaderProgram, vtkShaderProgram2);
  virtual void SetShaderProgram(vtkShaderProgram2 *program);
  //ETX
 
 
  void SetPass(vtkRenderPass *p);
  vtkGetObjectMacro(Pass, vtkRenderPass);
 
protected:
  vtkOpenGLRenderer();
  ~vtkOpenGLRenderer();
 
  void CheckCompilation(unsigned int fragmentShader);
 
  // Internal method to release graphics resources in any derived renderers.
  virtual void ReleaseGraphicsResources(vtkWindow *w);
 
  //BTX
  // Picking functions to be implemented by sub-classes
  virtual void DevicePickRender();
  virtual void StartPick(unsigned int pickFromSize);
  virtual void UpdatePickId();
  virtual void DonePick();
  virtual unsigned int GetPickedId();
  virtual unsigned int GetNumPickedIds();
  virtual int GetPickedIds(unsigned int atMost, unsigned int *callerBuffer);
  virtual double GetPickedZ();
 
  // Ivars used in picking
  class vtkGLPickInfo* PickInfo;
  //ETX
 
  double PickedZ;
 
  int NumberOfLightsBound;
  int RenderPeel(int layer);
 
  //BTX
  friend class vtkOpenGLProperty;
  friend class vtkOpenGLTexture;
  friend class vtkOpenGLImageSliceMapper;
  friend class vtkOpenGLImageResliceMapper;
  //ETX
 
  int GetUseTextureUniformVariable();
 
  int GetTextureUniformVariable();
 
  int DepthPeelingIsSupported;
 
  int DepthPeelingIsSupportedChecked;
 
  vtkOpenGLRendererLayerList *LayerList;
 
  unsigned int OpaqueLayerZ;
  unsigned int TransparentLayerZ;
  unsigned int ProgramShader;
 
 
  int ViewportX;
  int ViewportY;
  int ViewportWidth;
  int ViewportHeight;
 
  unsigned int DepthFormat;
 
  // Is rendering at translucent geometry stage using depth peeling and
  // rendering a layer other than the first one? (Boolean value)
  // If so, the uniform variables UseTexture and Texture can be set.
  // (Used by vtkOpenGLProperty or vtkOpenGLTexture)
  int DepthPeelingHigherLayer;
 
  vtkShaderProgram2 *ShaderProgram;
 
  friend class vtkRenderPass;
  vtkRenderPass *Pass;
 
private:
  vtkOpenGLRenderer(const vtkOpenGLRenderer&);  // Not implemented.
  void operator=(const vtkOpenGLRenderer&);  // Not implemented.
};
 
#endif