shader_definition.h

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/*
 * Copyright (c) 2010, Willow Garage, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Willow Garage, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 */

#ifndef RVE_RENDER_SERVER_SHADER_DEFINITION_H
#define RVE_RENDER_SERVER_SHADER_DEFINITION_H

#include <string>
#include <vector>

#include <ros/types.h>

namespace rve_render_server
{

struct ShaderParameter
{
  ShaderParameter()
  {}

  ShaderParameter(const std::string& type, const std::string& name, const std::string& semantic)
  : type(type)
  , name(name)
  , semantic(semantic)
  {}

  std::string type;
  std::string name;
  std::string semantic;
};
typedef std::vector<ShaderParameter> V_ShaderParameter;

struct ShaderUniform
{
  ShaderUniform()
  {}

  ShaderUniform(const std::string& type, const std::string& name, uint32_t auto_constant_type, uint32_t extra)
  : type(type)
  , name(name)
  , auto_constant_type(auto_constant_type)
  , extra(extra)
  {}

  std::string type;
  std::string name;
  uint32_t auto_constant_type;
  uint32_t extra;
};
typedef std::vector<ShaderUniform> V_ShaderUniform;

struct ShaderSampler
{
  ShaderSampler()
  {}

  ShaderSampler(const std::string& name, uint32_t reg)
  : name(name)
  , reg(reg)
  {
  }

  std::string name;
  uint32_t reg;
};
typedef std::vector<ShaderSampler> V_ShaderSampler;

typedef std::vector<std::string> V_string;

struct ShaderDefinition
{
  std::string geom_input;
  std::string geom_output;

  V_string includes;
  V_ShaderParameter inputs;
  V_ShaderParameter outputs;
  V_ShaderUniform uniforms;
  V_ShaderSampler samplers;

  std::string body;

  void include(const std::string& inc)
  {
    includes.push_back(inc);
  }

  void input(const std::string& type, const std::string& name, const std::string& semantic)
  {
    inputs.push_back(ShaderParameter(type, name, semantic));
  }

  void output(const std::string& type, const std::string& name, const std::string& semantic)
  {
    outputs.push_back(ShaderParameter(type, name, semantic));
  }

  void uniform(const std::string& type, const std::string& name, uint32_t auto_constant_type, uint32_t extra = 0)
  {
    uniforms.push_back(ShaderUniform(type, name, auto_constant_type, extra));
  }

  void sampler(const std::string& name, uint32_t reg)
  {
    samplers.push_back(ShaderSampler(name, reg));
  }

};

}

#endif // RVE_RENDER_SERVER_SHADER_DEFINITION_H