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ShaderObject.hh

Go to the documentation of this file.

/*
 *  Gazebo - Outdoor Multi-Robot Simulator
 *  Copyright (C) 2003  
 *     Nate Koenig & Andrew Howard
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
/* Desc: Wrapper around openGL shader objects
 * Author: Nate Koenig
 * Date: 10 March 2005
 * CVS: $Id$
 */

#ifndef SHADEROBJECT_HH
#define SHADEROBJECT_HH

#include <GL/gl.h>
#include <GL/glext.h>

#include "ShaderProgram.hh"

class ShaderObject
{
  public: ShaderObject();
  public: virtual ~ShaderObject();

  // Add a vertex or fragment shader program
  public: void AddShaderProgram( ShaderProgram *program );

  // Link all shaders
  public: bool Link();
  // Return the linker messages
  public: char *GetLinkerLog();

  // Start using this shader
  public: void Begin();
  // Stop using this shader
  public: void End();

  // Turn the shader on/off
  public: void EnableShader(bool b);

  // Returns true if OGSL is enabled
  public: bool OGSLEnabled();

  public: bool SendUniform1f(char *var, GLfloat v0);
  public: bool SendUniform2f(char *var, GLfloat v0, GLfloat v1);
  public: bool SendUniform3f(char *var, GLfloat v0, GLfloat v1, GLfloat v2);
  public: bool SendUniform4f(char *var, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);

  public: bool SendUniform1i(char *var, GLint v0);
  public: bool SendUniform2i(char *var, GLint v0, GLint v1);
  public: bool SendUniform3i(char *var, GLint v0, GLint v1, GLint v2);
  public: bool SendUniform4i(char *var, GLint v0, GLint v1, GLint v2, GLint v3);

  public: bool SendUniform1fv(char *var, GLsizei count, GLfloat *value);
  public: bool SendUniform2fv(char *var, GLsizei count, GLfloat *value);
  public: bool SendUniform3fv(char *var, GLsizei count, GLfloat *value);
  public: bool SendUniform4fv(char *var, GLsizei count, GLfloat *value);

  public: bool SendUniform1fi(char *var, GLsizei count, GLint *value);
  public: bool SendUniform2fi(char *var, GLsizei count, GLint *value);
  public: bool SendUniform3fi(char *var, GLsizei count, GLint *value);
  public: bool SendUniform4fi(char *var, GLsizei count, GLint *value);

  public: bool SendUniformMatrix2fv(char *var, GLsizei count, 
              GLboolean transpose, GLfloat *value);
  public: bool SendUniformMatrix3fv(char *var, GLsizei count, 
              GLboolean transpose, GLfloat *value);
  public: bool SendUniformMatrix4fv(char *var, GLsizei count, 
              GLboolean transpose, GLfloat *value);


  public: void GetUniformfv(char *name, GLfloat *values);
  public: void GetUniformiv(char *name, GLint *values);

  public: bool IsLinked();

  private: GLint GetUniformLocation(const GLcharARB *name);

  private: GLhandleARB shaderObject;
  private: GLcharARB *linkerLog;

  private: GLint isLinked;
  private: bool enabled;

  private: int shaderProgramCount;
  private: int shaderProgramMaxCount;
  private: ShaderProgram **shaderPrograms;

};

#endif

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Last updated 12 September 2005 21:38:45