This was the case when palette indexes were doing right thing, but actual colors are not. Such approach with 1...8 is working fine in normal automap mode because colors are "fading" to parch background color, but situation is a bit different in overlay mode.
This approach slightly reduces amount of smoothing colors, yet preserves reasonable smoothing, making lines slightly less... broken (not sure what's word is more correct here). And the result is: before and after. Please note that fading to dark near the screen borders is now reduced, but I believe it's a small price, at least this gives some better visibility.
This was the case when palette indexes were doing right thing, but actual colors are not. Such approach with
1...8is working fine in normal automap mode because colors are "fading" to parch background color, but situation is a bit different in overlay mode.This approach slightly reduces amount of smoothing colors, yet preserves reasonable smoothing, making lines slightly less... broken (not sure what's word is more correct here). And the result is: before and after. Please note that fading to dark near the screen borders is now reduced, but I believe it's a small price, at least this gives some better visibility.