Imported Upstream version 0.26.0

extern/shiny/Main/ShaderInstance.hpp

@@ -0,0 +1,71 @@
+#ifndef SH_SHADERINSTANCE_H
+#define SH_SHADERINSTANCE_H
+
+#include <vector>
+
+#include "Platform.hpp"
+
+namespace sh
+{
+	class ShaderSet;
+
+	typedef std::map< std::string, std::pair<std::string, ValueType > > UniformMap;
+
+	struct Passthrough
+	{
+		Language lang; ///< language to generate for
+
+		int num_components; ///< e.g. 4 for a float4
+
+		int passthrough_number;
+		int component_start; ///< 0 = x
+
+		std::string expand_assign(std::string assignTo);
+		std::string expand_receive();
+	};
+	typedef std::map<std::string, Passthrough> PassthroughMap;
+
+	/**
+	 * @brief A specific instance of a \a ShaderSet with a deterministic shader source
+	 */
+	class ShaderInstance
+	{
+	public:
+		ShaderInstance (ShaderSet* parent, const std::string& name, PropertySetGet* properties);
+
+		std::string getName();
+
+		bool getSupported () const;
+
+		std::vector<std::string> getUsedSamplers();
+		std::vector<std::string> getSharedParameters() { return mSharedParameters; }
+
+		void setUniformParameters (boost::shared_ptr<Pass> pass, PropertySetGet* properties);
+
+	private:
+		boost::shared_ptr<GpuProgram> mProgram;
+		std::string mName;
+		ShaderSet* mParent;
+		bool mSupported; ///< shader compilation was sucessful?
+
+		std::vector<std::string> mUsedSamplers;
+		///< names of the texture samplers that are used by this shader
+
+		std::vector<std::string> mSharedParameters;
+
+		UniformMap mUniformProperties;
+		///< uniforms that this depends on, and their property names / value-types
+		/// @note this lists shared uniform parameters as well
+
+		int mCurrentPassthrough; ///< 0 - x
+		int mCurrentComponent; ///< 0:x, 1:y, 2:z, 3:w
+
+		PassthroughMap mPassthroughMap;
+
+		std::vector<std::string> extractMacroArguments (size_t pos, const std::string& source); ///< take a macro invocation and return vector of arguments
+
+		void parse (std::string& source, PropertySetGet* properties);
+	};
+}
+
+#endif