unsigned short CPixelVisibilitySystem::FindOrCreateQueryForView( CPixelVisSet *pSet, int viewID )
{
unsigned short node = FindQueryForView( pSet, viewID );
if ( node != m_queryList.InvalidIndex() )
return node;
node = AllocQuery();
m_queryList.LinkToHead( pSet->queryList, node );
m_queryList[node].SetView( viewID );
return node;
}
void CPixelVisibilitySystem::DeleteUnusedQueries( CPixelVisSet *pSet, bool bDeleteAll )
{
unsigned short node = m_queryList.Head( pSet->queryList );
while ( node != m_queryList.InvalidIndex() )
{
unsigned short next = m_queryList.Next( node );
if ( bDeleteAll || !m_queryList[node].IsActive() )
{
m_queryList.Unlink( pSet->queryList, node);
m_queryList.LinkToHead( m_freeQueriesList, node );
}
node = next;
}
}
unsigned short CPixelVisibilitySystem::AllocSet()
{
unsigned short node = m_setList.Head(m_freeSetsList);
if ( node != m_setList.InvalidIndex() )
{
m_setList.Unlink( m_freeSetsList, node );
}
else
{
node = m_setList.Alloc();
m_setList[node].queryList = m_queryList.CreateList();
}
m_setList.LinkToHead( m_activeSetsList, node );
return node;
}
void CPixelVisibilitySystem::FreeSet( unsigned short node )
{
m_setList.Unlink( m_activeSetsList, node );
m_setList.LinkToHead( m_freeSetsList, node );
m_setList[node].serial++;
}