The Drivers License Compact requires member states to report tickets received by motorist back to the state where they are licensed. Also under the DLC, when a state suspends the license of a driver who is from out of state, the state where the motorist received a license to drive will also suspend their license.
The way in which member states will put this Compact into effect differs according to individual state statutes or laws. The current member list includes 46 states plus DC. Instead of listing all of those states, here is a list of states that are NOT currently members of the DLC:
Though these states are not part of the DLC they might have their own reciprocal agreement with states to exchange violation information between DMVs.
Since Nevada and Texas are part of the DLC, an accident or violation in NV would show up in TX. The Texas Department of Public Safety (DPS) states that any out of state conviction for a traffic offense that meets the definition of a moving violation in TX will accrue points.
According to the Driver Responsibility program of TX, 2 points are assigned for a moving violation conviction in Texas or that of any other state and 3 points for a moving violation conviction in Texas or another state that resulted in an accident.
As for Tennessee, they dropped out of the DLC in 1997 so it would depend upon if they have a separate agreement with Nevada to receive violation and/or accident information. TN is part of the Non-Resident Violator Compact which means that if you do not comply with an out of state citation you license could be suspended in both states.