[fabianfred]

I tried it out on my Thai map with a plate... I made it 1000m. x 50m. and the tga is 1024 x 64 pixels which gives an alpha channel 32 bit file size of 256kb.

Here it is overlaid upon the single pixel wide canals in Bangkok...I used brown at first but am changing that to match the river colour with a little brown showing at the edges for muddy banks....

the only thing is that the plate is flat so the ground must be too...or it will disappear in places....it would be easy in the static.ini to make a duplicate object which followed the land instead of being level with the sea...if that would be any use