block->inputs.push_back(find_block_from_arg(L, scene, 2)->idx);
block->white_balance_controller_block = find_block_from_arg(L, scene, 3);
} else {
block->inputs.push_back(find_block_from_arg(L, scene, 2)->idx);
block->white_balance_controller_block = find_block_from_arg(L, scene, 3);
} else {