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

  Program:   Visualization Toolkit
  Module:    vtkOpenGLProperty.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 vtkOpenGLProperty_h
#define vtkOpenGLProperty_h

#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkProperty.h"

class vtkGLSLShaderDeviceAdapter2;
class vtkOpenGLRenderer;
class vtkOpenGLRenderWindow;
class vtkShader2;
class vtkShader2Collection;
class vtkShaderDeviceAdapter2;
class vtkShaderProgram2;

class VTKRENDERINGOPENGL_EXPORT vtkOpenGLProperty : public vtkProperty
{
public:
  static vtkOpenGLProperty *New();
  vtkTypeMacro(vtkOpenGLProperty, vtkProperty);
  virtual void PrintSelf(ostream& os, vtkIndent indent);

  void Render(vtkActor *a, vtkRenderer *ren);

  void BackfaceRender(vtkActor *a, vtkRenderer *ren);

  //BTX

  virtual void PostRender(vtkActor *a,
                          vtkRenderer *r);

  virtual void ReleaseGraphicsResources(vtkWindow *win);


  vtkGetObjectMacro(PropProgram, vtkShaderProgram2);
  void SetPropProgram(vtkShaderProgram2 *);

  virtual vtkShaderDeviceAdapter2* GetShaderDeviceAdapter2();


  vtkGetObjectMacro(CurrentShaderProgram2, vtkShaderProgram2);
  //ETX


  virtual void AddShaderVariable(const char *name, int numVars, int *x);
  virtual void AddShaderVariable(const char *name, int numVars, float *x);
  virtual void AddShaderVariable(const char *name, int numVars, double *x);


  static void SetMaterialProperties(unsigned int face,
    double ambient, const double ambient_color[3],
    double diffuse, const double diffuse_color[3],
    double specular, const double specular_color[3], double specular_power,
    double opacity, vtkOpenGLRenderWindow* context);

protected:
  vtkOpenGLProperty();
  ~vtkOpenGLProperty();

  bool RenderShaders(vtkActor* actor, vtkRenderer* renderer);


  bool RenderTextures(vtkActor* actor, vtkRenderer* renderer,
    bool using_shader_program2);

  void LoadMultiTexturingExtensions(vtkRenderer* ren);

  // Owned. Result of merging the shader program of the renderer
  // and the PropProgram.
  vtkShaderProgram2 *CachedShaderProgram2;

  vtkShaderProgram2 *LastRendererShaderProgram2; // just a ref
  vtkShaderProgram2 *LastPropProgram; // just a ref
  vtkShaderProgram2 *PropProgram; // owned

  // Point to CachedShaderProgram2 if Shading is on and the context
  // supports it.
  vtkShaderProgram2 *CurrentShaderProgram2;

  vtkShader2 *DefaultMainVS;
  vtkShader2 *DefaultMainFS;
  vtkShader2 *DefaultPropVS;
  vtkShader2 *DefaultPropFS;
  bool UseDefaultMainVS;
  bool UseDefaultMainFS;
  bool UseDefaultPropVS;
  bool UseDefaultPropFS;
  vtkGLSLShaderDeviceAdapter2 *ShaderDeviceAdapter2;

private:
  vtkOpenGLProperty(const vtkOpenGLProperty&);  // Not implemented.
  void operator=(const vtkOpenGLProperty&);  // Not implemented.
};

#endif