shaderMutator.h 8.05 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/*******************************************************************************
* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
* version 0.1                                                                  *
* Copyright (C) 2009-2011, IGG Team, LSIIT, University of Strasbourg           *
*                                                                              *
* This library is free software; you can redistribute it and/or modify it      *
* under the terms of the GNU Lesser General Public License as published by the *
* Free Software Foundation; either version 2.1 of the License, or (at your     *
* option) any later version.                                                   *
*                                                                              *
* This library is distributed in the hope that it will be useful, but WITHOUT  *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License  *
* for more details.                                                            *
*                                                                              *
* You should have received a copy of the GNU Lesser General Public License     *
* along with this library; if not, write to the Free Software Foundation,      *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
*                                                                              *
* Web site: http://cgogn.u-strasbg.fr/                                         *
* Contact information: cgogn@unistra.fr                                        *
*                                                                              *
*******************************************************************************/

#ifndef _CGoGN_SHADERMUTATOR_H_
#define _CGoGN_SHADERMUTATOR_H_

#include "Utils/cgognStream.h"
#include <boost/regex.hpp>
#include <string>
31
#include <sstream>
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

namespace CGoGN
{

namespace Utils
{

class ShaderMutator
{
	
public:
	/**
	 * constructor
	 * @param vertShaderSrc the vertex shader source to store
	 * @param fragShaderSrc the fragment shader source to store
	 * @param geomShaderSrc the geometry shader source to store
	 */
	 ShaderMutator(const std::string& shaderName, const std::string& vertShaderSrc, const std::string& fragShaderSrc, const std::string& geomShaderSrc);
	 
	 /**
52
	  * check if a variable is declared in the vertex shader source
53
54
55
56
57
	  * @param variableName the variable to search for
	  */
	 bool VS_containsVariableDeclaration(const std::string& variableName);

	 /**
58
	  * check if a variable is declared in the fragment shader source
59
60
61
62
63
	  * @param variableName the variable to search for
	  */
	 bool FS_containsVariableDeclaration(const std::string& variableName);
	 
	 /**
64
	  * check if a variable is declared in the geometry shader source
65
66
67
68
	  * @param variableName the variable to search for
	  */
	 bool GS_containsVariableDeclaration(const std::string& variableName);
	 
69
70
71
72
73
74
	 /**
	  * set or change shading language version if the current version is lower
	  * @param version the version to set (110, 120, 150...)
	  */
	 void VS_FS_GS_setMinShadingLanguageVersion(int version);

75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
	 /**
	  * insert code before main function into shader vertex source code
	  * @param insertedCode source code to insert into shader
	  */
	 void VS_insertCodeBeforeMainFunction(const std::string& insertedCode);
	 
	 /**
	  * insert code before main function into shader fragment source code
	  * @param insertedCode source code to insert into shader
	  */
	 void FS_insertCodeBeforeMainFunction(const std::string& insertedCode);
	 
	 /**
	  * insert code before main function into shader geometry source code
	  * @param insertedCode source code to insert into shader
	  */
	 void GS_insertCodeBeforeMainFunction(const std::string& insertedCode);
	 
	 /**
	  * insert code at the beginning of main function into shader vertex source code
	  * @param insertedCode source code to insert into shader
	  */
	 void VS_insertCodeAtMainFunctionBeginning(const std::string& insertedCode);
	 
	 /**
	  * insert code at the beginning of main function into shader fragment source code
	  * @param insertedCode source code to insert into shader
	  */
	 void FS_insertCodeAtMainFunctionBeginning(const std::string& insertedCode);
	 
	 /**
	  * insert code at the beginning of main function into shader geometry source code
	  * @param insertedCode source code to insert into shader
	  */
	 void GS_insertCodeAtMainFunctionBeginning(const std::string& insertedCode);
	 
	 /**
	  * insert code at the beginning of main function into shader vertex source code
	  * @warning takes the number of opening and closing braces of main function into account
	  * @param insertedCode source code to insert into shader
	  */
	 void VS_insertCodeAtMainFunctionEnd(const std::string& insertedCode);
	 
	 /**
	  * insert code at the beginning of main function into shader fragment source code
	  * @warning takes the number of opening and closing braces of main function into account
	  * @param insertedCode source code to insert into shader
	  */
	 void FS_insertCodeAtMainFunctionEnd(const std::string& insertedCode);
	 
	 /**
	  * insert code at the beginning of main function into shader geometry source code
	  * @warning takes the number of opening and closing braces of main function into account
	  * @param insertedCode source code to insert into shader
	  */
	 void GS_insertCodeAtMainFunctionEnd(const std::string& insertedCode);
	 
	 /**
	  * returns the modified vertex shader source code
	  */
	 std::string getModifiedVertexShaderSrc() { return m_vShaderMutation; }
	 
	 /**
	  * returns the modified fragment shader source code
	  */
	 std::string getModifiedFragmentShaderSrc() { return m_fShaderMutation; }
	 
	 /**
	  * returns the modified geometry shader source code
	  */
	 std::string getModifiedGeometryShaderSrc() { return m_gShaderMutation; }
	
private:

	 /**
	  * processed shader name stored for log purpose
	  */
	 std::string m_shaderName;
	
	/**
	 * modified version of the original vertex shader source code
	 */
	std::string m_vShaderMutation;
	
	/**
	 * modified version of the original fragment shader source code
	 */
	std::string m_fShaderMutation;
	
	/**
	 * modified version of the original geometry shader source code
	 */
	std::string m_gShaderMutation;
	
	/**
	 * verify if the given position in the string is commented or not
	 * @param pos the position
	 * @param str the string to analyze
	 */
	bool isCommented(size_t pos, const std::string& str);
	
	/**
	 * verify if the given position in the string is commented with a one-line comment or not
	 * @param pos the position
	 * @param str the string to analyze
	 */
	bool isOneLineCommented(size_t pos, const std::string& str);
	
	/**
	  * check if a variable is declared in a source code or not
	  * @param variable the variable to search for
	 */
	bool containsVariableDeclaration(const std::string& variableName, std::string& src);
	
189
190
191
192
193
194
195
	/**
	 * set or change shading language version if the current version is lower
	 * @param version the version to set (110, 120, 150...)
	 * @param modifiedSrc shader source code to modify
	 */
	bool setMinShadingLanguageVersion(int version, std::string& modifiedSrc);

196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
	/**
	 * insert code before main function into source code
	 * @param insertedCode source code to insert into shader
	 * @param modifiedSrc shader source code to modify
	 */
	bool insertCodeBeforeMainFunction(const std::string& insertedCode, std::string& modifiedSrc);
	
	/**
	 * insert code at the beginning of main function into source code
	 * @param insertedCode source code to insert into shader
	 * @param modifiedSrc shader source code to modify
	 */
	bool insertCodeAtMainFunctionBeginning(const std::string& insertedCode, std::string& modifiedSrc);

	/**
	 * insert code at the end of main function into source code
	 * @param insertedCode source code to insert into shader
	 * @param modifiedSrc shader source code to modify
	 */
	bool insertCodeAtMainFunctionEnd(const std::string& insertedCode, std::string& modifiedSrc);
	
};

} // namespace Utils

} // namespace CGoGN

#endif