Place this into the extension file of any RMI GPK track to enable RAIN_FX effects.
[RAIN_FX]
PUDDLES_MATERIALS = road?,369,rmbl?,pitroad_?
SOAKING_MATERIALS = spect?,snd?,road?,pitroad_?,rmbl?,tree?,bush?,wall_490,14?,21?,22?,23?,28?,29?,32?,33?,35?,36?,38?,39?,42?,40?,43?,44?,41?,45?,47?,43?,46?,659,658,66?,72?,75?
SMOOTH_MATERIALS = 368,fence_?,grdr?,01 - Default,?wall?,gard?
ROUGH_MATERIALS = gras?,tree?,twal?
LINES_MATERIALS =
RELIEF_MATERIALS =
[RAIN_FX]
PUDDLES_MATERIALS = road?,369,rmbl?,pitroad_?
SOAKING_MATERIALS = spect?,snd?,road?,pitroad_?,rmbl?,tree?,bush?,wall_490,14?,21?,22?,23?,28?,29?,32?,33?,35?,36?,38?,39?,42?,40?,43?,44?,41?,45?,47?,43?,46?,659,658,66?,72?,75?
SMOOTH_MATERIALS = 368,fence_?,grdr?,01 - Default,?wall?,gard?
ROUGH_MATERIALS = gras?,tree?,twal?
LINES_MATERIALS =
RELIEF_MATERIALS =