Here are some UT shots from a map Chalnoth gave me (thanks).
0X:
http://www.stud.ntnu.no/~vidaralm/UT/0X.jpg
1X (application controlled):
http://www.stud.ntnu.no/~vidaralm/UT/1appcontrol.jpg
1X:
http://www.stud.ntnu.no/~vidaralm/UT/1X.jpg
2X:
http://www.stud.ntnu.no/~vidaralm/UT/2X.jpg
4X:
http://www.stud.ntnu.no/~vidaralm/UT/4X.jpg
8X:
http://www.stud.ntnu.no/~vidaralm/UT/8X.jpg
Rivatuner 8X:
http://www.stud.ntnu.no/~vidaralm/UT/rivatuner8X.jpg
It's obvious that 8X is the same as 4X on these shots. Rivatuner does it right. Trilinear in UT is set to True, but the 1X and Application Controlled shot is the same. (the folder is open for easy viewing: http://www.stud.ntnu.no/~vidaralm/UT/ )
0X:
http://www.stud.ntnu.no/~vidaralm/UT/0X.jpg
1X (application controlled):
http://www.stud.ntnu.no/~vidaralm/UT/1appcontrol.jpg
1X:
http://www.stud.ntnu.no/~vidaralm/UT/1X.jpg
2X:
http://www.stud.ntnu.no/~vidaralm/UT/2X.jpg
4X:
http://www.stud.ntnu.no/~vidaralm/UT/4X.jpg
8X:
http://www.stud.ntnu.no/~vidaralm/UT/8X.jpg
Rivatuner 8X:
http://www.stud.ntnu.no/~vidaralm/UT/rivatuner8X.jpg
It's obvious that 8X is the same as 4X on these shots. Rivatuner does it right. Trilinear in UT is set to True, but the 1X and Application Controlled shot is the same. (the folder is open for easy viewing: http://www.stud.ntnu.no/~vidaralm/UT/ )