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			95 lines
		
	
	
	
		
			2.9 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			95 lines
		
	
	
	
		
			2.9 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| #ifndef OPENMW_COMPONENTS_SHADERMANAGER_H
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| #define OPENMW_COMPONENTS_SHADERMANAGER_H
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| 
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| #include <string>
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| #include <map>
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| #include <mutex>
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| 
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| #include <osg/ref_ptr>
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| 
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| #include <osg/Shader>
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| 
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| #include <osgViewer/Viewer>
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| 
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| #include <components/sceneutil/lightmanager.hpp>
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| 
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| namespace Resource
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| {
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|     class SceneManager;
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| }
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| 
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| namespace SceneUtil
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| {
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|     enum class LightingMethod;
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| }
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| 
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| namespace Shader
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| {
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| 
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|     enum class UBOBinding
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|     {
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|         LightBuffer
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|     };
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| 
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|     /// @brief Reads shader template files and turns them into a concrete shader, based on a list of define's.
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|     /// @par Shader templates can get the value of a define with the syntax @define.
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|     class ShaderManager
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|     {
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|     public:
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| 
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|         ShaderManager();
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| 
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|         void setShaderPath(const std::string& path);
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| 
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|         void setLightingMethod(SceneUtil::LightingMethod method);
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| 
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|         typedef std::map<std::string, std::string> DefineMap;
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| 
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|         /// Create or retrieve a shader instance.
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|         /// @param shaderTemplate The filename of the shader template.
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|         /// @param defines Define values that can be retrieved by the shader template.
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|         /// @param shaderType The type of shader (usually vertex or fragment shader).
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|         /// @note May return nullptr on failure.
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|         /// @note Thread safe.
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|         osg::ref_ptr<osg::Shader> getShader(const std::string& templateName, const DefineMap& defines, osg::Shader::Type shaderType);
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| 
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|         osg::ref_ptr<osg::Program> getProgram(osg::ref_ptr<osg::Shader> vertexShader, osg::ref_ptr<osg::Shader> fragmentShader);
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| 
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|         /// Get (a copy of) the DefineMap used to construct all shaders
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|         DefineMap getGlobalDefines();
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| 
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|         /// Set the DefineMap used to construct all shaders
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|         /// @param defines The DefineMap to use
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|         /// @note This will change the source code for any shaders already created, potentially causing problems if they're being used to render a frame. It is recommended that any associated Viewers have their threading stopped while this function is running if any shaders are in use.
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|         void setGlobalDefines(DefineMap & globalDefines);
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| 
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|         void releaseGLObjects(osg::State* state);
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| 
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|     private:
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|         std::string mPath;
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| 
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|         DefineMap mGlobalDefines;
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| 
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|         // <name, code>
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|         typedef std::map<std::string, std::string> TemplateMap;
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|         TemplateMap mShaderTemplates;
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| 
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|         typedef std::pair<std::string, DefineMap> MapKey;
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|         typedef std::map<MapKey, osg::ref_ptr<osg::Shader> > ShaderMap;
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|         ShaderMap mShaders;
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| 
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|         typedef std::map<std::pair<osg::ref_ptr<osg::Shader>, osg::ref_ptr<osg::Shader> >, osg::ref_ptr<osg::Program> > ProgramMap;
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|         ProgramMap mPrograms;
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| 
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|         SceneUtil::LightingMethod mLightingMethod;
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| 
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|         std::mutex mMutex;
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|     };
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| 
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|     bool parseFors(std::string& source, const std::string& templateName);
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| 
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|     bool parseDefines(std::string& source, const ShaderManager::DefineMap& defines,
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|         const ShaderManager::DefineMap& globalDefines, const std::string& templateName);
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| }
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| 
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| #endif
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