axmol/cocos2dx/shaders/CCShaderCache.h

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2011      Ricardo Quesada
Copyright (c) 2011      Zynga Inc.

http://www.cocos2d-x.org

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****************************************************************************/

#ifndef __CCSHADERCACHE_H__
#define __CCSHADERCACHE_H__

#include <string>
#include <unordered_map>

#include "cocoa/CCDictionary.h"

NS_CC_BEGIN

class GLProgram;

/**
 * @addtogroup shaders
 * @{
 */

/** ShaderCache
 Singleton that stores manages GL shaders
 @since v2.0
 */
class CC_DLL ShaderCache : public Object 
{
public:
    ShaderCache();

    virtual ~ShaderCache();

    /** returns the shared instance */
    static ShaderCache* getInstance();

    /** purges the cache. It releases the retained instance. */
    static void destroyInstance();

    /** @deprecated Use getInstance() instead */
    CC_DEPRECATED_ATTRIBUTE static ShaderCache* sharedShaderCache();

    /** @deprecated Use destroyInstance() instead */
    CC_DEPRECATED_ATTRIBUTE static void purgeSharedShaderCache();

    /** loads the default shaders */
    void loadDefaultShaders();
    
    /** reload the default shaders */
    void reloadDefaultShaders();

    /** returns a GL program for a given key */
    GLProgram * programForKey(const std::string &key);

    /** adds a GLProgram to the cache for a given name */
    void addProgram(GLProgram* program, const std::string &key);

private:
    bool init();
    void loadDefaultShader(GLProgram *program, int type);

//    Dictionary* _programs;
    std::unordered_map<std::string, GLProgram*> _programs;
};

// end of shaders group
/// @}

NS_CC_END

#endif /* __CCSHADERCACHE_H__ */