static void find_reachable_operations_recursive(Tags &reachable, NodeOperation *op)
{
if (reachable.find(op) != reachable.end())
return;
reachable.insert(op);
for (int i = 0; i < op->getNumberOfInputSockets(); ++i) {
NodeOperationInput *input = op->getInputSocket(i);
if (input->isConnected())
find_reachable_operations_recursive(reachable, &input->getLink()->getOperation());
}
/* associated write-buffer operations are executed as well */
if (op->isReadBufferOperation()) {
ReadBufferOperation *read_op = (ReadBufferOperation *)op;
MemoryProxy *memproxy = read_op->getMemoryProxy();
find_reachable_operations_recursive(reachable, memproxy->getWriteBufferOperation());
}
}
void NodeOperationBuilder::group_operations()
{
for (Operations::const_iterator it = m_operations.begin(); it != m_operations.end(); ++it) {
NodeOperation *op = *it;
if (op->isOutputOperation(m_context->isRendering())) {
ExecutionGroup *group = make_group(op);
group->setOutputExecutionGroup(true);
}
/* add new groups for associated memory proxies where needed */
if (op->isReadBufferOperation()) {
ReadBufferOperation *read_op = (ReadBufferOperation *)op;
MemoryProxy *memproxy = read_op->getMemoryProxy();
if (memproxy->getExecutor() == NULL) {
ExecutionGroup *group = make_group(memproxy->getWriteBufferOperation());
memproxy->setExecutor(group);
}
}
}
}
