SuperTuxKart
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shader_files_manager.hpp
1// SuperTuxKart - a fun racing game with go-kart
2// Copyright (C) 2016 SuperTuxKart-Team
3//
4// This program is free software; you can redistribute it and/or
5// modify it under the terms of the GNU General Public License
6// as published by the Free Software Foundation; either version 3
7// of the License, or (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with this program; if not, write to the Free Software
16// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17
18#ifndef SERVER_ONLY
19
20#ifndef HEADER_SHADER_FILES_MANAGER_HPP
21#define HEADER_SHADER_FILES_MANAGER_HPP
22
23#include "graphics/gl_headers.hpp"
24#include "utils/log.hpp"
25#include "utils/no_copy.hpp"
26#include "utils/singleton.hpp"
27
28#include <algorithm>
29#include <cassert>
30#include <string>
31#include <memory>
32#include <unordered_map>
33
34class ShaderFilesManager : public Singleton<ShaderFilesManager>, NoCopy
35{
36private:
37 typedef std::shared_ptr<GLuint> SharedShader;
42 std::unordered_map<std::string, SharedShader> m_shader_files_loaded;
43
44 // ------------------------------------------------------------------------
45 const std::string& getHeader();
46 // ------------------------------------------------------------------------
47 void readFile(const std::string& file, std::ostringstream& code,
48 bool not_header = true);
49 // ------------------------------------------------------------------------
50 SharedShader addShaderFile(const std::string& full_path, unsigned type);
51
52public:
53 // ------------------------------------------------------------------------
55 // ------------------------------------------------------------------------
57 {
58 removeAllShaderFiles();
59 }
60 // ------------------------------------------------------------------------
61 void removeAllShaderFiles()
62 {
63 removeUnusedShaderFiles();
64 if (!m_shader_files_loaded.empty())
65 {
66#ifdef DEBUG
67 Log::error("ShaderFilesManager", "Some shader file > 1 ref_count");
68#endif
70 }
71 }
72 // ------------------------------------------------------------------------
73 void removeUnusedShaderFiles()
74 {
75 for (auto it = m_shader_files_loaded.begin();
76 it != m_shader_files_loaded.end();)
77 {
78 if (it->second.use_count() == 1 || !it->second)
79 {
80 it = m_shader_files_loaded.erase(it);
81 }
82 else
83 {
84 it++;
85 }
86 }
87 }
88 // ------------------------------------------------------------------------
89 SharedShader loadShader(const std::string& full_path, unsigned type);
90 // ------------------------------------------------------------------------
91 SharedShader getShaderFile(const std::string& file, unsigned type);
92
93}; // ShaderFilesManager
94
95#endif
96
97#endif // !SERVER_ONLY
Utility class, you can inherit from this class to disallow the assignment operator and copy construct...
Definition: no_copy.hpp:26
Definition: shader_files_manager.hpp:35
SharedShader loadShader(const std::string &full_path, unsigned type)
Loads a single shader.
Definition: shader_files_manager.cpp:130
const std::string & getHeader()
Returns a string with the content of header.txt (which contains basic shader defines).
Definition: shader_files_manager.cpp:40
SharedShader addShaderFile(const std::string &full_path, unsigned type)
Loads a single shader file, and add it to the loaded (cached) list.
Definition: shader_files_manager.cpp:262
SharedShader getShaderFile(const std::string &file, unsigned type)
Get a shader file.
Definition: shader_files_manager.cpp:282
std::unordered_map< std::string, SharedShader > m_shader_files_loaded
Map from a filename in full path to a shader indentifier.
Definition: shader_files_manager.hpp:42
Definition: singleton.hpp:87