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/*=========================================================================
Program: Visualization Toolkit
Module: vtkGLSLShaderProgram.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.
*/
// .NAME vtkGLSLShaderProgram - GLSL Shader Program
// .SECTION Description
// vtkGLSLShaderProgram is a concerete implementation of vtkShaderProgram.
// It's main function is to 'Link' a vertex and a fragment shader together
// and install them into the rendering pipeline by calling OpenGL2.0.
//
// Initialization of shader parameters is delegated to instances of vtkShader
// (vtkGLSLShader in this case).
// .SECTION Thanks
// Shader support in VTK includes key contributions by Gary Templet at
// Sandia National Labs.
#ifndef __vtkGLSLShaderProgram_h
#define __vtkGLSLShaderProgram_h
#include "vtkRenderingOpenGLModule.h" // For export macro
#include "vtkShaderProgram.h"
class vtkGLSLShader;
class vtkXMLDataElement;
class vtkRenderWindow;
class VTKRENDERINGOPENGL_EXPORT vtkGLSLShaderProgram : public vtkShaderProgram
{
public:
vtkTypeMacro(vtkGLSLShaderProgram, vtkShaderProgram);
static vtkGLSLShaderProgram *New();
void PrintSelf(ostream &os, vtkIndent indent);
// .Description:
// Take shader from its source (file and/or string) and load, compile, and
// install in hardware. Also, initialize uniform variables originating from
// the following sources: XML material file, vtkProperty, vtkLight,
// vtkCamera, and application-specified uniform variables.
virtual void Render(vtkActor *actor, vtkRenderer *renderer);
// Description:
// Called to unload the shaders after the actor has been rendered.
virtual void PostRender(vtkActor*, vtkRenderer*);
// Description:
// Release any graphics resources that are being consumed by this actor.
// The parameter window could be used to determine which graphic
// resources to release.
virtual void ReleaseGraphicsResources(vtkWindow *);
// Description:
// Return the OpenGL program id.
unsigned int GetProgram()
{return this->Program;}
protected:
vtkGLSLShaderProgram();
virtual ~vtkGLSLShaderProgram();
// Description:
// Creates and returns a new vtkGLSLShader.
virtual vtkShader* NewShader();
virtual void LoadExtensions(vtkRenderWindow*);
unsigned int Program;
int IsProgram();
int IsLinked();
int IsAttached(vtkGLSLShader* shader);
virtual void Link();
vtkSetStringMacro( Info );
vtkGetStringMacro( Info );
char* Info;
void GetProgramInfo();
void GetInfoLog();
private:
vtkGLSLShaderProgram(const vtkGLSLShaderProgram&); // Not Implemented
void operator=(const vtkGLSLShaderProgram&); // Not Implemented
};
#endif //__vtkGLSLShaderProgram_h
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