static bool writeShaders( osgDB::OutputStream& os, const osg::Program& attr )
{
unsigned int size = attr.getNumShaders();
os.writeSize(size); os << os.BEGIN_BRACKET << std::endl;
for ( unsigned int i=0; i<size; ++i )
{
os << attr.getShader(i);
}
os << os.END_BRACKET << std::endl;
return true;
}
static bool writeFeedBackVaryingsName( osgDB::OutputStream& os, const osg::Program& attr )
{
unsigned int size = attr.getNumTransformFeedBackVaryings();
os.writeSize(size); os << os.BEGIN_BRACKET << std::endl;
for ( unsigned int i=0; i<size; ++i )
{
os << attr.getTransformFeedBackVarying(i)<< std::endl;
}
os << os.END_BRACKET << std::endl;
return true;
}
static bool writeComputeGroups( osgDB::OutputStream& os, const osg::Program& attr )
{
GLint numX = 0, numY = 0, numZ = 0;
attr.getComputeGroups( numX, numY, numZ );
os << numX << numY << numZ << std::endl;
return true;
}
static bool readComputeGroups( osgDB::InputStream& is, osg::Program& attr )
{
GLint numX = 0, numY = 0, numZ = 0;
is >> numX >> numY >> numZ;
attr.setComputeGroups( numX, numY, numZ );
return true;
}
static bool readFeedBackMode( osgDB::InputStream& is, osg::Program& attr )
{
unsigned int size ;
is>>size;
attr.setTransformFeedBackMode(size);
return true;
}
static bool readShaders( osgDB::InputStream& is, osg::Program& attr )
{
unsigned int size = is.readSize(); is >> is.BEGIN_BRACKET;
for ( unsigned int i=0; i<size; ++i )
{
osg::Shader* shader = dynamic_cast<osg::Shader*>( is.readObject() );
if ( shader ) attr.addShader( shader );
}
is >> is.END_BRACKET;
return true;
}
static bool readShaders( osgDB::InputStream& is, osg::Program& attr )
{
unsigned int size = is.readSize(); is >> is.BEGIN_BRACKET;
for ( unsigned int i=0; i<size; ++i )
{
osg::ref_ptr<osg::Shader> shader = is.readObjectOfType<osg::Shader>();
if ( shader ) attr.addShader( shader );
}
is >> is.END_BRACKET;
return true;
}
static bool readFeedBackVaryingsName( osgDB::InputStream& is, osg::Program& attr )
{
unsigned int size = is.readSize(); is >> is.BEGIN_BRACKET;
for ( unsigned int i=0; i<size; ++i )
{
std::string str;
is>> str;
attr.addTransformFeedBackVarying(str);
}
is >> is.END_BRACKET;
return true;
}
// _shaderList
static bool checkShaders( const osg::Program& attr )
{
return attr.getNumShaders()>0;
}
// _numGroupsX/Y/Z
static bool checkComputeGroups( const osg::Program& attr )
{
GLint numX = 0, numY = 0, numZ = 0;
attr.getComputeGroups( numX, numY, numZ );
return numX>0 && numY>0 && numZ>0;
}
static bool writeFeedBackMode( osgDB::OutputStream& os, const osg::Program& attr )
{
os << attr.getTransformFeedBackMode()<< std::endl;
return true;
}
void bindAttribute(osg::Program& program, const AttributeAlias& alias)
{
program.addBindAttribLocation(alias.second, alias.first);
}