dox/Rendering/vtkCgShader.h

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

  Program:   Visualization Toolkit
  Module:    vtkCgShader.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.

=========================================================================*/
/*
 * Copyright 2003 Sandia Corporation.
 * Under the terms of Contract DE-AC04-94AL85000, there is a non-exclusive
 * license for use of this work by or on behalf of the
 * U.S. Government. Redistribution and use in source and binary forms, with
 * or without modification, are permitted provided that this Notice and any
 * statement of authorship are reproduced on all copies.
 */

#ifndef __vtkCgShader_h
#define __vtkCgShader_h

#include "vtkShader.h"

class vtkActor;
class vtkCamera;
class vtkCgShaderInternals;
class vtkLight;
class vtkProperty;
class vtkRenderer;

// manages all shaders defined in the XML file
// especially the part about sending things to the card
class VTK_RENDERING_EXPORT vtkCgShader : public vtkShader
{
public:
  static vtkCgShader *New();
  vtkTypeMacro(vtkCgShader, vtkShader);
  void PrintSelf(ostream &os, vtkIndent indent);
 
  // Called to compile the shader code.
  // The vtkShaderProgram calls this method only when
  // vtkShader::IsCompiled() returns false.
  // The subclasses must only compile the code in this method.
  // Returns if the compile was successful.
  virtual int Compile();

  virtual void  Bind();

  virtual void Unbind();

  void ReportError();

  void ReleaseGraphicsResources(vtkWindow *);


  virtual void PassShaderVariables(vtkActor* actor, vtkRenderer* ren);
//BTX
protected:
  vtkCgShader();
  ~vtkCgShader();


  virtual void SetUniformParameter(const char* name, int numValues, const int* value) ;
  virtual void SetUniformParameter(const char* name, int numValues, const float* value) ;
  virtual void SetUniformParameter(const char* name, int numValues, const double* value);


  virtual void SetMatrixParameter(const char* name, int numValues, 
    int order, const float* value);
  virtual void SetMatrixParameter(const char* name, int numValues, 
    int order, const double* value);
  virtual void SetMatrixParameter(const char* name, const char* state_matix_type,
    const char* transform_type);

  virtual void SetSamplerParameter(const char* name, vtkTexture* texture,
                                   int);

  friend class vtkCgShaderDeviceAdapter;
private:
  vtkCgShader(const vtkCgShader&); // Not Implemented
  void operator=(const vtkCgShader&); // Not Implemented
  
  vtkCgShaderInternals* Internals;
//ETX
};
#endif //_vtkCgShader_h

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