shader-types.h

Go to the documentation of this file.

/*
 *  Copyright 2016, DFKI GmbH Robotics Innovation Center
 *
 *  This file is part of the MARS simulation framework.
 *
 *  MARS is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation, either version 3
 *  of the License, or (at your option) any later version.
 *
 *  MARS 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 Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with MARS.  If not, see <http://www.gnu.org/licenses/>.
 *
 */


#ifndef OSG_MATERIAL_MANAGER_SHADER_TYPES_H
#define OSG_MATERIAL_MANAGER_SHADER_TYPES_H

#include <string>
#include <ostream>
#include <vector>

namespace osg_material_manager {

  typedef struct {
    std::string type;
    std::string name;
  } GLSLAttribute;

  typedef GLSLAttribute GLSLVarying;
  typedef GLSLAttribute GLSLUniform;
  typedef GLSLAttribute GLSLSuffix;

  typedef struct {
    std::string name;
    std::string value;
  } GLSLExport;

  typedef struct {
    std::string type;
    std::string name;
    std::string value;
  } GLSLVariable;

  typedef GLSLVariable GLSLConstant;


  typedef struct PrioritizedValue {
    int priority;
    int s_priority; // used to preserve order in case of same priority
    bool operator<(const PrioritizedValue& other) const {
      if (priority == other.priority) {
        return s_priority > other.s_priority;
      }
      return priority > other.priority;
    };
  } PrioritizedValue;

  typedef struct FunctionCall : PrioritizedValue {
    std::string name;
    std::vector<std::string> arguments;
    FunctionCall(std::string name, std::vector<std::string> args, int prio, int s_prio) : name(name), arguments(args) {
      priority = prio;
    }
    std::string toString() const {
      std::string call = name + "( ";
      unsigned long numArgs = arguments.size();

      if(numArgs > 0) {
        call += arguments[0];
        for(int i=1; i<numArgs; ++i) {
          call += ", " + arguments[i];
        }
      }
      call += " )";
      return call;
    }
  } FunctionCall;

  typedef struct MainVar : PrioritizedValue, GLSLVariable {
    MainVar(std::string p_name, std::string p_type, std::string p_value, int p_priority, int p_s_priority) {
      priority = p_priority;
      s_priority = p_s_priority;
      name = p_name;
      value = p_value;
      type = p_type;
    }
    std::string toString() const {
      return name + " = " + value;
    }
  } MainVar;

  typedef struct PrioritizedLine : PrioritizedValue {
    std::string line;
    PrioritizedLine(std::string p_line, int p_priority, int p_s_priority) : line(p_line) {
      priority = p_priority;
      s_priority = p_s_priority;
    }
  };

  std::ostream& operator<<(std::ostream& os, const GLSLAttribute& a);
  std::ostream& operator<<(std::ostream& os, const GLSLExport& a);
  std::ostream& operator<<(std::ostream& os, const GLSLVariable& a);
  bool operator<(const GLSLAttribute& a, const GLSLAttribute& b);
  bool operator<(const GLSLExport& a, const GLSLExport& b);
  bool operator<(const GLSLVariable& a, const GLSLVariable& b);

} // end of namespace osg_material_manager

#endif /* OSG_MATERIAL_MANAGER_SHADER_TYPES_H */