Files
OpenSceneGraph/src/osgPlugins/osg/FragmentProgram.cpp

143 lines
3.6 KiB
C++

#include "osg/FragmentProgram"
#include <iostream>
#include <sstream>
#include "osgDB/Registry"
#include "osgDB/Input"
#include "osgDB/Output"
#include "Matrix.h"
using namespace osg;
using namespace osgDB;
using namespace std;
// forward declare functions to use later.
bool FragmentProgram_readLocalData(Object& obj, Input& fr);
bool FragmentProgram_writeLocalData(const Object& obj, Output& fw);
// register the read and write functions with the osgDB::Registry.
RegisterDotOsgWrapperProxy g_FragmentProgramProxy
(
new osg::FragmentProgram,
"FragmentProgram",
"Object StateAttribute FragmentProgram",
&FragmentProgram_readLocalData,
&FragmentProgram_writeLocalData
);
bool FragmentProgram_readLocalData(Object& obj, Input& fr)
{
bool iteratorAdvanced = false;
FragmentProgram& fragmentProgram = static_cast<FragmentProgram&>(obj);
if (fr[0].matchWord("ProgramLocalParameter"))
{
int index;
Vec4 vec;
fr[1].getInt(index);
fr[2].getFloat(vec[0]);
fr[3].getFloat(vec[1]);
fr[4].getFloat(vec[2]);
fr[5].getFloat(vec[3]);
fr += 6;
iteratorAdvanced = true;
fragmentProgram.setProgramLocalParameter(index, vec);
}
if (fr[0].matchWord("Matrix"))
{
int index;
fr[1].getInt(index);
fr += 2;
osg::Matrix matrix;
if (readMatrix(matrix,fr))
{
fragmentProgram.setMatrix(index, matrix);
}
iteratorAdvanced = true;
}
if (fr.matchSequence("code {"))
{
std::string code;
fr += 2;
iteratorAdvanced = true;
int entry = fr[0].getNoNestedBrackets();
while (!fr.eof() && fr[0].getNoNestedBrackets() >= entry) {
if (fr[0].getStr()) {
code.append(std::string(fr[0].getStr()));
code += '\n';
}
++fr;
}
fragmentProgram.setFragmentProgram(code);
}
if( fr.matchSequence("file %s"))
{
std::string filename = fr[1].getStr();
fr += 2;
iteratorAdvanced = true;
ifstream vfstream( filename.c_str() );
if( vfstream ) {
ostringstream vstream;
char ch;
/* xxx better way to transfer a ifstream to a string?? */
while( vfstream.get(ch)) vstream.put(ch);
fragmentProgram.setFragmentProgram( vstream.str() );
}
}
return iteratorAdvanced;
}
bool FragmentProgram_writeLocalData(const Object& obj,Output& fw)
{
const FragmentProgram& fragmentProgram = static_cast<const FragmentProgram&>(obj);
const FragmentProgram::LocalParamList& lpl = fragmentProgram.getLocalParameters();
FragmentProgram::LocalParamList::const_iterator i;
for(i=lpl.begin(); i!=lpl.end(); i++)
{
fw.indent() << "ProgramLocalParameter " << (*i).first << " " << (*i).second << std::endl;
}
const FragmentProgram::MatrixList& mpl = fragmentProgram.getMatrices();
FragmentProgram::MatrixList::const_iterator mi;
for(mi=mpl.begin(); mi!=mpl.end(); mi++)
{
fw.indent() << "Matrix " << (*mi).first << " ";
writeMatrix((*mi).second,fw);
}
std::vector<std::string> lines;
std::istringstream iss(fragmentProgram.getFragmentProgram());
std::string line;
while (std::getline(iss, line))
{
lines.push_back(line);
}
fw.indent() << "code {\n";
fw.moveIn();
std::vector<std::string>::const_iterator j;
for (j=lines.begin(); j!=lines.end(); ++j)
{
fw.indent() << "\"" << *j << "\"\n";
}
fw.moveOut();
fw.indent() << "}\n";
return true;
}