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69 lines
2.3 KiB
C++
69 lines
2.3 KiB
C++
#ifndef SH_SHADERSET_H
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#define SH_SHADERSET_H
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#include <string>
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#include <vector>
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#include <map>
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#include "ShaderInstance.hpp"
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namespace sh
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{
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class PropertySetGet;
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typedef std::map<size_t, ShaderInstance> ShaderInstanceMap;
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/**
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* @brief Contains possible shader permutations of a single uber-shader (represented by one source file)
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*/
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class ShaderSet
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{
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public:
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ShaderSet (const std::string& type, const std::string& cgProfile, const std::string& hlslProfile, const std::string& sourceFile, const std::string& basePath,
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const std::string& name, PropertySetGet* globalSettingsPtr);
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~ShaderSet();
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/// Retrieve a shader instance for the given properties. \n
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/// If a \a ShaderInstance with the same properties exists already, simply returns this instance. \n
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/// Otherwise, creates a new \a ShaderInstance (i.e. compiles a new shader). \n
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/// Might also return NULL if the shader failed to compile. \n
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/// @note Only the properties that actually affect the shader source are taken into consideration here,
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/// so it does not matter if you pass any extra properties that the shader does not care about.
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ShaderInstance* getInstance (PropertySetGet* properties);
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private:
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PropertySetGet* getCurrentGlobalSettings() const;
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std::string getBasePath() const;
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std::string getSource() const;
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std::string getCgProfile() const;
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std::string getHlslProfile() const;
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int getType() const;
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friend class ShaderInstance;
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private:
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GpuProgramType mType;
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std::string mSource;
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std::string mBasePath;
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std::string mCgProfile;
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std::string mHlslProfile;
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std::string mName;
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std::vector <size_t> mFailedToCompile;
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std::vector <std::string> mGlobalSettings; ///< names of the global settings that affect the shader source
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std::vector <std::string> mProperties; ///< names of the per-material properties that affect the shader source
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std::vector <std::string> mPropertiesToExist;
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///< same as mProperties, however in this case, it is only relevant if the property is empty or not
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/// (we don't care about the value)
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ShaderInstanceMap mInstances; ///< maps permutation ID (generated from the properties) to \a ShaderInstance
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void parse(); ///< find out which properties and global settings affect the shader source
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size_t buildHash (PropertySetGet* properties);
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};
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}
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#endif
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