GPUprogram.C

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// ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// JeVois Smart Embedded Machine Vision Toolkit - Copyright (C) 2016 by Laurent Itti, the University of Southern
// California (USC), and iLab at USC. See http://iLab.usc.edu and http://jevois.org for information about this project.
//
// This file is part of the JeVois Smart Embedded Machine Vision Toolkit.  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, version 2.  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// Contact information: Laurent Itti - 3641 Watt Way, HNB-07A - Los Angeles, CA 90089-2520 - USA.
// Tel: +1 213 740 3527 - itti@pollux.usc.edu - http://iLab.usc.edu - http://jevois.org
// ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/*! \file */
 
#include <jevois/GPU/GPUprogram.H>
 
// ####################################################################################################
jevois::GPUprogram::GPUprogram(char const * vertex_shader, char const * fragment_shader)
{
  if (vertex_shader[0] == '#') itsVertexShader.set("vertex", vertex_shader, GL_VERTEX_SHADER);
  else itsVertexShader.load(vertex_shader, GL_VERTEX_SHADER);
 
  if (fragment_shader[0] == '#') itsFragmentShader.set("fragment", fragment_shader, GL_FRAGMENT_SHADER);
  else itsFragmentShader.load(fragment_shader, GL_FRAGMENT_SHADER);
 
  itsId = glCreateProgram();
  GL_CHECK(glAttachShader(itsId, itsVertexShader.id()));
  GL_CHECK(glAttachShader(itsId, itsFragmentShader.id()));
  GL_CHECK(glLinkProgram(itsId));
 
  LDEBUG("GPU program " << itsId <<" created.");
 
  /*
  // Prints the information log for a program object
  char log[1024];
  glGetProgramInfoLog(Id,sizeof log,NULL,log);
  printf("%d:program:\n%s\n", Id, log);
  */
}
 
// ####################################################################################################
jevois::GPUprogram::~GPUprogram()
{
  // Disable the program:
  glUseProgram(0);
 
  // Nuke it:
  glDetachShader(itsId, itsVertexShader.id());
  glDetachShader(itsId, itsFragmentShader.id());
  glDeleteProgram(itsId);
}
 
// ####################################################################################################
GLuint jevois::GPUprogram::id() const
{ return itsId; }