renderer.cpp

/* Mondschein Engine is a fast, powerful, and easy-to-use 3D realtime rendering engine.
 *
 * Copyright (C) 2009-2013 by Andreas Amereller
 * E-Mail: andreas.amereller.dev@googlemail.com
 *
 * 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 3 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "core/renderer.h"
#include <GL/gl.h>

using namespace mondschein;
using namespace renderer;

Renderer::Renderer()
{
  return;
}

Renderer::~Renderer()
{
  return;
}

void Renderer::set_context(Context_p _c)
{
  context=_c;
}

Context_p Renderer::get_context() const
{
  return context;
}

void Renderer::toggle_feature(const std::string &_feature,bool _state)
{
  if (context.get()==nullptr)
  {
    std::string err("Mondschein Engine ERROR: No context available or context not set. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::toggle_feature(const std::string &_feature,bool _state) const";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  if (!Engine::is_current(context))
  {
    std::string err("Mondschein Engine ERROR: The context must be current for the renderer to take action.");
    err+=" Exception raised in function\n\t";
    err+="void mondschein::renderer::Renderer::toggle_feature(const std::string &_feature,bool _state) const";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  return;
}

bool Renderer::query_extension(const std::string &_ext)
{
  if (context.get() == nullptr)
  {
    std::string err("Mondschein Engine ERROR: No context available or context not set. Exception raised in function\n\t");
    err+="bool mondschein::renderer::Renderer::query_extension(const std::string &_ext)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  if (!Engine::is_current(context))
  {
    std::string err("Mondschein Engine ERROR: Context is not current. Exception raised in function\n\t");
    err+="bool mondschein::renderer::Renderer::query_extension(const std::string &_ext)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  const char *c=reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS));
  std::string str(c);
  if (str.find(_ext)!=std::string::npos) return true;
  else return false;
}

void Renderer::set_clear_color(const Eigen::Vector4d& _c)
{
  if (context.get()==nullptr)
  {
    std::string err("Mondschein Engine ERROR: No context available or context not set. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::set_clear_color(const Eigen::Vector4d& _c)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  if (!Engine::is_current(context))
  {
    std::string err("Mondschein Engine ERROR: Context is not current. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::set_clear_color(const Eigen::Vector4d& _c)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  return;
}

void Renderer::clear_color_buffer()
{
  if (context.get()==nullptr)
  {
    std::string err("Mondschein Engine ERROR: No context available or context not set. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::clear_color_buffer()";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  if (!Engine::is_current(context))
  {
    std::string err("Mondschein Engine ERROR: Context is not current. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::clear_color_buffer()";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  return;
}

void Renderer::clear_depth_buffer()
{
  if (context.get()==nullptr)
  {
    std::string err("Mondschein Engine ERROR: No context available or context not set. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::clear_depth_buffer()";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  if (!Engine::is_current(context))
  {
    std::string err("Mondschein Engine ERROR: Context is not current. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::clear_depth_buffer()";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  return;
}

void Renderer::make_renderable(scene::Scenenode_c _sn)
{
  if (context.get()==nullptr)
  {
    std::string err("Mondschein Engine ERROR: No context available or context not set. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::make_renderable(scene::Scenenode_c _sn)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  if (!Engine::is_current(context))
  {
    std::string err("Mondschein Engine ERROR: Context is not current. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::make_renderable(scene::Scenenode_c _sn)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  return;
}

void Renderer::render(scene::Scenegraph_c _sg,const uint32 _start)
{
  if (context.get()==nullptr)
  {
    std::string err("Mondschein Engine ERROR: No context available or context not set. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::render(scene::Scenegraph_c _sg,const uint32 _start)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  if (!Engine::is_current(context))
  {
    std::string err("Mondschein Engine ERROR: Context is not current. Exception raised in function\n\t");
    err+="void mondschein::renderer::Renderer::render(scene::Scenegraph_c _sg,const uint32 _start)";
    throw boost::enable_current_exception(exception()) << exception_error(err);
  }
  return;
}