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56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
#ifndef OPENMW_COMPONENTS_SHADERMANAGER_H
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#define OPENMW_COMPONENTS_SHADERMANAGER_H
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#include <string>
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#include <map>
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#include <osg/ref_ptr>
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#include <osg/Shader>
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#include <OpenThreads/Mutex>
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namespace Shader
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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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void setShaderPath(const std::string& path);
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typedef std::map<std::string, std::string> DefineMap;
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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 NULL on failure.
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/// @note Thread safe.
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osg::ref_ptr<osg::Shader> getShader(const std::string& shaderTemplate, const DefineMap& defines, osg::Shader::Type shaderType);
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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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private:
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std::string mPath;
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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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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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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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OpenThreads::Mutex mMutex;
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};
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}
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#endif
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