98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2016 SuperTuxKart-Team
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 3
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#ifndef SERVER_ONLY
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#ifndef HEADER_SHADER_FILES_MANAGER_HPP
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#define HEADER_SHADER_FILES_MANAGER_HPP
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#include "graphics/gl_headers.hpp"
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#include "utils/log.hpp"
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#include "utils/no_copy.hpp"
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#include "utils/singleton.hpp"
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#include <algorithm>
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#include <cassert>
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#include <string>
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#include <memory>
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#include <unordered_map>
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class ShaderFilesManager : public Singleton<ShaderFilesManager>, NoCopy
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{
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private:
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typedef std::shared_ptr<GLuint> SharedShader;
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/**
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* Map from a filename in full path to a shader indentifier.
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* Used for caching shaders.
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*/
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std::unordered_map<std::string, SharedShader> m_shader_files_loaded;
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// ------------------------------------------------------------------------
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const std::string& getHeader();
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// ------------------------------------------------------------------------
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void readFile(const std::string& file, std::ostringstream& code,
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bool not_header = true);
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// ------------------------------------------------------------------------
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SharedShader addShaderFile(const std::string& full_path, unsigned type);
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public:
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// ------------------------------------------------------------------------
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ShaderFilesManager() {}
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// ------------------------------------------------------------------------
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~ShaderFilesManager()
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{
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removeAllShaderFiles();
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}
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// ------------------------------------------------------------------------
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void removeAllShaderFiles()
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{
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removeUnusedShaderFiles();
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if (!m_shader_files_loaded.empty())
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{
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#ifdef DEBUG
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Log::error("ShaderFilesManager", "Some shader file > 1 ref_count");
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#endif
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m_shader_files_loaded.clear();
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}
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}
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// ------------------------------------------------------------------------
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void removeUnusedShaderFiles()
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{
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for (auto it = m_shader_files_loaded.begin();
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it != m_shader_files_loaded.end();)
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{
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if (it->second.use_count() == 1 || !it->second)
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{
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it = m_shader_files_loaded.erase(it);
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}
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else
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{
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it++;
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}
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}
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}
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// ------------------------------------------------------------------------
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SharedShader loadShader(const std::string& full_path, unsigned type);
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// ------------------------------------------------------------------------
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SharedShader getShaderFile(const std::string& file, unsigned type);
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}; // ShaderFilesManager
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#endif
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#endif // !SERVER_ONLY
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