Commit 78ab1fee authored by Maire Nicolas's avatar Maire Nicolas Committed by maire
Browse files

Rajout d'un module permettant l'insertion de code source dans un shader déjà fonctionnel.

Utilise la lib boost-regex, ajoutée au CMake.
parent 9479c4e5
SET(EXECUTABLE_OUTPUT_PATH ${CGoGN_ROOT_DIR}/bin)
SET (COMMON_LIBS ${GLUT_LIBRARY} ${OPENGL_LIBRARY} ${GLEW_LIBRARY} ${DEVIL_LIBRARIES} ${ZLIB_LIBRARIES} ${LIBXML2_LIBRARIES} gzstream AntTweakBar openctm assimp)
BOOST_LIBS(boost_regex_lib_lists "boost_regex-mt")
SET (COMMON_LIBS ${GLUT_LIBRARY} ${OPENGL_LIBRARY} ${GLEW_LIBRARY} ${DEVIL_LIBRARIES} ${ZLIB_LIBRARIES} ${LIBXML2_LIBRARIES} ${boost_regex_lib_lists} gzstream AntTweakBar openctm assimp)
SET(CGoGN_LIBS_R topology algo container utils)
......
/*******************************************************************************
* 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>
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);
/**
* check if a variable is declared in the vertex shader source or not
* @param variableName the variable to search for
*/
bool VS_containsVariableDeclaration(const std::string& variableName);
/**
* check if a variable is declared in the fragment shader source or not
* @param variableName the variable to search for
*/
bool FS_containsVariableDeclaration(const std::string& variableName);
/**
* check if a variable is declared in the geometry shader source or not
* @param variableName the variable to search for
*/
bool GS_containsVariableDeclaration(const std::string& variableName);
/**
* 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);
/**
* 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
/*******************************************************************************
* 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 *
* *
*******************************************************************************/
#include "Utils/shaderMutator.h"
namespace CGoGN
{
namespace Utils
{
ShaderMutator::ShaderMutator(const std:: string& shaderName, const std::string& vertShaderSrc, const std::string& fragShaderSrc, const std::string& geomShaderSrc)
{
// Store the shader name
m_shaderName = shaderName;
// Store the shader source codes
m_vShaderMutation = vertShaderSrc;
m_fShaderMutation = fragShaderSrc;
m_gShaderMutation = geomShaderSrc;
}
bool ShaderMutator::VS_containsVariableDeclaration(const std::string& variableName)
{
return containsVariableDeclaration(variableName, m_vShaderMutation);
}
bool ShaderMutator::FS_containsVariableDeclaration(const std::string& variableName)
{
return containsVariableDeclaration(variableName, m_fShaderMutation);
}
bool ShaderMutator::GS_containsVariableDeclaration(const std::string& variableName)
{
return containsVariableDeclaration(variableName, m_gShaderMutation);
}
void ShaderMutator::VS_insertCodeBeforeMainFunction(const std::string& insertedCode)
{
if (!insertCodeBeforeMainFunction(insertedCode, m_vShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::VS_insertCodeBeforeMainFunction : "
<< "Unable to insert source code in vertex shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration"
<< CGoGNendl;
}
}
void ShaderMutator::FS_insertCodeBeforeMainFunction(const std::string& insertedCode)
{
if (!insertCodeBeforeMainFunction(insertedCode, m_fShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::FS_insertCodeBeforeMainFunction : "
<< "Unable to insert source code in fragment shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration"
<< CGoGNendl;
}
}
void ShaderMutator::GS_insertCodeBeforeMainFunction(const std::string& insertedCode)
{
if (!insertCodeBeforeMainFunction(insertedCode, m_gShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::GS_insertCodeBeforeMainFunction : "
<< "Unable to insert source code in geometry shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration"
<< CGoGNendl;
}
}
void ShaderMutator::VS_insertCodeAtMainFunctionBeginning(const std::string& insertedCode)
{
if (!insertCodeAtMainFunctionBeginning(insertedCode, m_vShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::VS_insertCodeAtMainFunctionBeginnning : "
<< "Unable to insert source code vertex shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration"
<< CGoGNendl;
}
}
void ShaderMutator::FS_insertCodeAtMainFunctionBeginning(const std::string& insertedCode)
{
if (!insertCodeAtMainFunctionBeginning(insertedCode, m_fShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::FS_insertCodeAtMainFunctionBeginnning : "
<< "Unable to insert source code in fragment shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration"
<< CGoGNendl;
}
}
void ShaderMutator::GS_insertCodeAtMainFunctionBeginning(const std::string& insertedCode)
{
if (!insertCodeAtMainFunctionBeginning(insertedCode, m_gShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::GS_insertCodeAtMainFunctionBeginnning : "
<< "Unable to insert source code in geometry shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration"
<< CGoGNendl;
}
}
void ShaderMutator::VS_insertCodeAtMainFunctionEnd(const std::string& insertedCode)
{
if (!insertCodeAtMainFunctionEnd(insertedCode, m_vShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::VS_insertCodeAtMainFunctionEnd : "
<< "Unable to insert source code in vertex shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration "
<< "and as many '{' as '}'"
<< CGoGNendl;
}
}
void ShaderMutator::FS_insertCodeAtMainFunctionEnd(const std::string& insertedCode)
{
if (!insertCodeAtMainFunctionEnd(insertedCode, m_fShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::FS_insertCodeAtMainFunctionEnd : "
<< "Unable to insert source code in fragment shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration "
<< "and as many '{' as '}'"
<< CGoGNendl;
}
}
void ShaderMutator::GS_insertCodeAtMainFunctionEnd(const std::string& insertedCode)
{
if (!insertCodeAtMainFunctionEnd(insertedCode, m_gShaderMutation))
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::GS_insertCodeAtMainFunctionEnd : "
<< "Unable to insert source code in geometry shader of "
<< m_shaderName
<< ". You should check if the shader has a main function declaration "
<< "and as many '{' as '}'"
<< CGoGNendl;
}
}
bool ShaderMutator::isCommented(size_t pos, const std::string& str)
{
// Verify that the given position is not out of the string
if (pos >= str.length())
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::isCommented : "
<< "Given position is out of range"
<< CGoGNendl;
return false;
}
// Look backward in the string to see if there is any comment symbol (// or /* */)
// First look for one-line comments
if (isOneLineCommented(pos, str))
return true;
// Now look for multi-line comments
size_t i;
for (i = pos; i > 0; i--)
{
if (str[i] == '/')
{
// End of multi-line comment
if (str[i-1] == '*')
{
// Verify that the end of multi-line comment is not one-line commented !
if (!isOneLineCommented(i, str))
return false;
}
}
else if (str[i] == '*')
{
// Beginning of multi-line comment
if (str[i-1] == '/')
{
// Verify that the beginning of multi-line comment is not one-line commented !
if (!isOneLineCommented(i, str))
return true;
}
}
}
// No one-line or multi-line comments were found
return false;
}
bool ShaderMutator::isOneLineCommented(size_t pos, const std::string& str)
{
// Verify that the given position is not out of the string
if (pos >= str.length())
{
CGoGNerr
<< "ERROR - "
<< "ShaderMutator::isOneLineCommented : "
<< "Given position is out of range"
<< CGoGNendl;
return false;
}
// Look backward in the string to see if there is any "//"
size_t i;
for (i = pos; i > 0; i--)
{
// As soon as a '\n' is found, any other "//" will not affect this line anymore
if (str[i] == '\n')
return false;
else if (str[i] == '/')
if (str[i-1] == '/')
return true;
}
// No one-line comments were found
return false;
}
bool ShaderMutator::containsVariableDeclaration(const std::string& variableName, std::string& src)
{
// Regular expression for variable declaration
// <',' OR white-space[1 or more times]> <variableName> <',' OR ';' OR white-space>
boost::regex var_re("(,|\\s+)" + variableName + "(,|;|\\s)");
// Matches results
boost::match_results <std::string::iterator> matches;
// Search for the first expression that matches and isn't commented
std::string::iterator start = src.begin();
std::string::iterator end = src.end();
while (regex_search(start, end, matches, var_re, boost::format_first_only))
{
// Start position of the match
size_t startPosition = std::distance(src.begin(), matches[0].first);
// Finish if the matched variable is the good one (i.e. not commented)
if (!isCommented(startPosition, src))
return true;
// Else continue to search for it after last match
else
start = matches[0].second;
}
// At this point no correct match was found
return false;
}
bool ShaderMutator::insertCodeBeforeMainFunction(const std::string& insertedCode, std::string& modifiedSrc)
{
// Regular expression for main function
// <void> <white-space>[1 or more times] <main> <white-space>[0 or more times] <'('>
boost::regex main_re("(void)\\s+(main)\\s*\\(");
// Matches results
boost::match_results <std::string::iterator> matches;
// Search for the first expression that matches and isn't commented
std::string::iterator start = modifiedSrc.begin();
std::string::iterator end = modifiedSrc.end();
while (regex_search(start, end, matches, main_re, boost::format_first_only))
{
// Start position of the match
size_t startPosition = std::distance(modifiedSrc.begin(), matches[0].first);
// Insert and finish if the matched "main" is the good one (i.e. not commented)
if (!isCommented(startPosition, modifiedSrc))
{
modifiedSrc.insert(startPosition, insertedCode);
return true;
}
// Else continue to search for it after last match
else
{
start = matches[0].second;
}
}
// At this point no correct match was found
return false;
}
bool ShaderMutator::insertCodeAtMainFunctionBeginning(const std::string& insertedCode, std::string& modifiedSrc)
{
// Regular expression for main function
// <void> <white-space>[1 or more times] <main> <white-space>[0 or more times]
// <'('> <white-space>[0 or more times] <')'>
// <white-space>[0 or more times] <'{'>
boost::regex main_re("(void)\\s+(main)\\s*\\(\\s*\\)\\s*\\{");
// Matches results
boost::match_results <std::string::iterator> matches;
// Search for the first expression that matches and isn't commented
std::string::iterator start = modifiedSrc.begin();
std::string::iterator end = modifiedSrc.end();
while (regex_search(start, end, matches, main_re, boost::format_first_only))
{
// Start position of the match
size_t startPosition = std::distance(modifiedSrc.begin(), matches[0].first);
// End position of the match
size_t endPosition = std::distance(modifiedSrc.begin(), matches[0].second);
// Insert and finish if the matched "main" is the good one (i.e. not commented)
if (!isCommented(startPosition, modifiedSrc))
{
modifiedSrc.insert(endPosition, insertedCode);
return true;
}
// Else continue to search for it after last match
else
{
start = matches[0].second;
}
}
// At this point no correct match was found
return false;
}
bool ShaderMutator::insertCodeAtMainFunctionEnd(const std::string& insertedCode, std::string& modifiedSrc)
{
// Regular expression for main function
// <void> <white-space>[1 or more times] <main> <white-space>[0 or more times]
// <'('> <white-space>[0 or more times] <')'>
// <white-space>[0 or more times] <'{'>
boost::regex main_re("(void)\\s+(main)\\s*\\(\\s*\\)\\s*\\{");
// Matches results
boost::match_results <std::string::iterator> matches;
// Search for the first expression that matches and isn't commented
std::string::iterator start = modifiedSrc.begin();
std::string::iterator end = modifiedSrc.end();
size_t mainFirstBracePos = 0; // The aim is to find this position
while (regex_search(start, end, matches, main_re, boost::format_first_only) && (mainFirstBracePos == 0))
{
// Start position of the match
size_t startPosition = std::distance(modifiedSrc.begin(), matches[0].first);
// End position of the match
size_t endPosition = std::distance(modifiedSrc.begin(), matches[0].second);
// Get the main first brace position if the matched "main" is the good one (i.e. not commented)
if (!isCommented(startPosition, modifiedSrc))
mainFirstBracePos = endPosition;
// Else continue to search for it after last match
else
start = matches[0].second;
}