Imported Upstream version 0.26.0

extern/shiny/Main/ShaderSet.hpp

@@ -0,0 +1,69 @@
+#ifndef SH_SHADERSET_H
+#define SH_SHADERSET_H
+
+#include <string>
+#include <vector>
+#include <map>
+
+#include "ShaderInstance.hpp"
+
+namespace sh
+{
+	class PropertySetGet;
+
+	typedef std::map<size_t, ShaderInstance> ShaderInstanceMap;
+
+	/**
+	 * @brief Contains possible shader permutations of a single uber-shader (represented by one source file)
+	 */
+	class ShaderSet
+	{
+	public:
+		ShaderSet (const std::string& type, const std::string& cgProfile, const std::string& hlslProfile, const std::string& sourceFile, const std::string& basePath,
+				   const std::string& name, PropertySetGet* globalSettingsPtr);
+		~ShaderSet();
+
+		/// Retrieve a shader instance for the given properties. \n
+		/// If a \a ShaderInstance with the same properties exists already, simply returns this instance. \n
+		/// Otherwise, creates a new \a ShaderInstance (i.e. compiles a new shader). \n
+		/// Might also return NULL if the shader failed to compile. \n
+		/// @note Only the properties that actually affect the shader source are taken into consideration here,
+		/// so it does not matter if you pass any extra properties that the shader does not care about.
+		ShaderInstance* getInstance (PropertySetGet* properties);
+
+	private:
+		PropertySetGet* getCurrentGlobalSettings() const;
+		std::string getBasePath() const;
+		std::string getSource() const;
+		std::string getCgProfile() const;
+		std::string getHlslProfile() const;
+		int getType() const;
+
+		friend class ShaderInstance;
+
+	private:
+		GpuProgramType mType;
+		std::string mSource;
+		std::string mBasePath;
+		std::string mCgProfile;
+		std::string mHlslProfile;
+		std::string mName;
+
+		std::vector <size_t> mFailedToCompile;
+
+		std::vector <std::string> mGlobalSettings; ///< names of the global settings that affect the shader source
+		std::vector <std::string> mProperties; ///< names of the per-material properties that affect the shader source
+
+		std::vector <std::string> mPropertiesToExist;
+		///< same as mProperties, however in this case, it is only relevant if the property is empty or not
+		/// (we don't care about the value)
+
+		ShaderInstanceMap mInstances; ///< maps permutation ID (generated from the properties) to \a ShaderInstance
+
+		void parse(); ///< find out which properties and global settings affect the shader source
+
+		size_t buildHash (PropertySetGet* properties);
+	};
+}
+
+#endif