void copySelectedVertices( const VertexAttributeSetSharedPtr & from, const VertexAttributeSetSharedPtr & to
, std::vector<std::vector<unsigned int> > &indices )
{
// indexMap below is intended to hold vertex indices, which should not exceed 32-bit precision by definition!
std::vector<unsigned int> indexMap( from->getNumberOfVertices(), ~0 );
std::vector<unsigned int> iFrom; iFrom.reserve(from->getNumberOfVertices());
for ( size_t i=0 ; i<indices.size() ; i++ )
{
for ( size_t j=0 ; j<indices[i].size() ; j++ )
{
if ( indexMap[indices[i][j]] == ~0 )
{
indexMap[indices[i][j]] = dp::checked_cast<unsigned int>(iFrom.size());
iFrom.push_back(indices[i][j]);
}
}
}
for ( unsigned int slot=0 ; slot<static_cast<unsigned int>(VertexAttributeSet::AttributeID::VERTEX_ATTRIB_COUNT) ; slot++ )
{
VertexAttributeSet::AttributeID id = static_cast<VertexAttributeSet::AttributeID>(slot);
if ( from->getSizeOfVertexData( id ) )
{
BufferSharedPtr oldData = from->getVertexBuffer(id);
Buffer::DataReadLock lock( oldData );
unsigned int size = from->getSizeOfVertexData( id );
dp::DataType type = from->getTypeOfVertexData( id );
to->setVertexData( id, NULL, &iFrom[0], size, type, lock.getPtr()
, from->getStrideOfVertexData( id )
, dp::checked_cast<unsigned int>(iFrom.size()) );
// inherit enable states from source id
// normalize-enable state only meaningful for generic aliases!
to->setEnabled(id, from->isEnabled(id)); // conventional
id = static_cast<VertexAttributeSet::AttributeID>(slot+16); // generic
to->setEnabled(id, from->isEnabled(id));
to->setNormalizeEnabled(id, from->isNormalizeEnabled(id));
}
}
for ( size_t i=0 ; i<indices.size() ; i++ )
{
for ( size_t j=0 ; j<indices[i].size() ; j++ )
{
indices[i][j] = indexMap[indices[i][j]];
}
}
}
void copy( VertexAttributeSetSharedPtr const& src, VertexAttributeSetSharedPtr const& dst )
{
if ( src != dst )
{
dst->setName( src->getName() );
dst->setAnnotation( src->getAnnotation() );
dst->setHints( src->getHints() );
dst->setUserData( src->getUserData() );
for ( unsigned int i=0 ; i<2*static_cast<unsigned int>(VertexAttributeSet::AttributeID::VERTEX_ATTRIB_COUNT) ; ++i )
{
VertexAttributeSet::AttributeID id = static_cast<VertexAttributeSet::AttributeID>(i);
if ( src->getSizeOfVertexData( id ) )
{
DP_ASSERT( ( src->getOffsetOfVertexData( id ) == 0 ) && src->isContiguousVertexData( id ) );
dst->setVertexData( id, src->getSizeOfVertexData( id ), src->getTypeOfVertexData( id )
, src->getVertexBuffer( id ), src->getOffsetOfVertexData( id )
, src->getStrideOfVertexData( id ), src->getNumberOfVertexData( id ) );
dst->setEnabled( id, src->isEnabled( id ) );
if ( id >= VertexAttributeSet::AttributeID::VERTEX_ATTRIB_COUNT )
{
dst->setNormalizeEnabled( id, src->isNormalizeEnabled( id ) );
}
}
}
}
}