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#pragma once
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#ifndef TPASSIVECACHEMANAGER_INCLUDED
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#define TPASSIVECACHEMANAGER_INCLUDED
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#include "tfxcachemanager.h"
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//=========================================================================
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//  Forward declarations
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class TXsheet;
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//  Typedefs
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typedef void (*TreeDescriptor)(std::string &desc, const TFxP &root);
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//=========================================================================
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//===================================
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//    TPassiveCacheManager class
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//-----------------------------------
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/*!
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The TPassiveCacheManager is the cache delegate manager that allows render processes to cache
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fx results from externally specified schematic nodes for future reuse.
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Observe that this manager takes no effort in verifying the usefulness of caching an fx, as the
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expected behaviour for such cached results is that of being recycled on future, \a unpredictable render
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instances under the same passive cache management. Active, predictive caching takes place
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under control of another manager class - namely, the TFxCacheManager - for single render instances.
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*/
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class DVAPI TPassiveCacheManager : public TFxCacheManagerDelegate
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{
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	T_RENDER_RESOURCE_MANAGER
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private:
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	struct FxData {
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		TFxP m_fx;
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		UCHAR m_storageFlag;
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		int m_passiveCacheId;
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		//std::set<tcacheresourcep> m_resources;</tcacheresourcep>
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		std::string m_treeDescription;
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		FxData();
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		~FxData();
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		/*void insert(const TCacheResourceP& resource);
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    std::set<tcacheresourcep>::iterator erase(const std::set<tcacheresourcep>::iterator& it);</tcacheresourcep></tcacheresourcep>
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    void clear();*/
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	};
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	class ResourcesContainer;
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private:
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	QMutex m_mutex;
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	std::vector<fxdata> m_fxDataVector;</fxdata>
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	std::set<std::string> m_invalidatedLevels;</std::string>
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	ResourcesContainer *m_resources;
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	std::map<std::string, uchar=""> m_contextNames;</std::string,>
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	std::map<unsigned long,="" std::string=""> m_contextNamesByRenderId;</unsigned>
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	bool m_updatingPassiveCacheIds;
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	int m_currentPassiveCacheId;
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	bool m_enabled;
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public:
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	TPassiveCacheManager();
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	~TPassiveCacheManager();
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	static TPassiveCacheManager *instance();
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	void setContextName(unsigned long renderId, const std::string &name);
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	void releaseContextNamesWithPrefix(const std::string &prefix);
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	TFx *getNotAllowingAncestor(TFx *fx);
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	void setEnabled(bool enabled);
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	bool isEnabled() const;
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	void reset();
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	enum StorageFlag { NONE = 0x0,
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					   IN_MEMORY = 0x1,
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					   ON_DISK = 0x2 };
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	void setStorageMode(StorageFlag mode);
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	StorageFlag getStorageMode() const;
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	int declareCached(TFx *fx, int passiveCacheId);
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	void onSceneLoaded();
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	int getPassiveCacheId(TFx *fx);
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	void enableCache(TFx *fx);
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	void disableCache(TFx *fx);
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	bool cacheEnabled(TFx *fx);
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	void toggleCache(TFx *fx);
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	StorageFlag getStorageMode(TFx *fx);
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	void invalidateLevel(const std::string &levelName);
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	void forceInvalidate();
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	void getResource(
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		TCacheResourceP &resource, const std::string &alias,
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		const TFxP &fx, double frame, const TRenderSettings &rs,
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		ResourceDeclaration *resData);
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	void onRenderInstanceStart(unsigned long renderId);
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	void onRenderInstanceEnd(unsigned long renderId);
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	void onRenderStatusEnd(int renderStatus);
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	bool renderHasOwnership() { return false; }
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public:
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	void setTreeDescriptor(TreeDescriptor callback);
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	void onFxChanged(const TFxP &fx);
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	void onXsheetChanged();
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private:
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	TreeDescriptor m_descriptorCallback;
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	StorageFlag m_currStorageFlag;
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private:
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	void touchFxData(int &idx);
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	int getNewPassiveCacheId();
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	int updatePassiveCacheId(int id);
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	std::string getContextName();
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	void releaseOldResources();
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};
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#endif //TPASSIVECACHEMANAGER_INCLUDED