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//
// C++ Interface: ShaderManager
//
// Description:
//
//
// Author: Alexey Torkhov <atorkhov@gmail.com>, (C) 2009
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.//
//
#ifndef EMBEROGRE_SHADERMANAGER_H
#define EMBEROGRE_SHADERMANAGER_H
#include "framework/ConsoleObject.h"
#include "services/config/ConfigListener.h"
#include <string>
#include <map>
#include <sigc++/signal.h>
namespace EmberOgre {
/**
* @brief Utility class for setup shaders
*
* Utility class for setup shaders. It checks a set of materials and selects
* best sheme they work at. Then it performs setup of auxilary things like
* shadows.
*
* @author Alexey Torkhov <atorkhov@gmail.com>
*/
class ShaderManager : public Ember::ConsoleObject, public Ember::ConfigListenerContainer
{
public:
/**
* Enumeration of graphics levels
*/
enum GraphicsLevel {
// Default scheme is when no scheme specified, very simple textured models
LEVEL_DEFAULT,
// Low level, shader model 2
LEVEL_LOW,
// Medium level, shader model 3
LEVEL_MEDIUM,
// High level, shader model 4
LEVEL_HIGH,
// Experimental level
LEVEL_EXPERIMENTAL,
};
/**
* Constructor.
*/
ShaderManager();
/**
* Destructor.
*/
~ShaderManager();
/**
* Shaders initialization
*/
void init();
/**
* Gets current graphics level
*/
GraphicsLevel getGraphicsLevel();
/**
* Sets current graphics level
*/
GraphicsLevel setGraphicsLevel(GraphicsLevel newLevel);
/**
* Reimplements the ConsoleObject::runCommand method
*/
virtual void runCommand(const std::string &command, const std::string &args);
/**
* Sets graphics level at runtime
*/
const Ember::ConsoleCommandWrapper SetLevel;
/**
* Returns level id by its name
*/
GraphicsLevel getLevelByName(const std::string &level);
/**
* @brief Emitted when the graphical level is changed.
*/
sigc::signal<void> EventLevelChanged;
private:
/**
* Current graphics level
*/
GraphicsLevel mGraphicsLevel;
/**
* Best graphics level supported, determined at initialization time
*/
GraphicsLevel mBestGraphicsLevel;
/**
* Map of levels and schemes. Also used to convert levels to strings
*/
std::map<GraphicsLevel, std::string> mGraphicSchemes;
/**
* Checks whether material is supported in current scheme
*/
bool checkMaterial(const std::string& materialName, const std::string& schemeName);
/**
* Setups PSSM shadows
*/
void setPSSMShadows();
/**
* Disables shadows
*/
void setNoShadows();
/**
* @brief Called when the varconf setting for the graphics level changes. This will in turn call setGraphicsLevel.
* @param section
* @param key
* @param variable
*/
void Config_Level(const std::string& section, const std::string& key, varconf::Variable& variable);
};
}
#endif
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